Q4 Hex Spark Arrestor
Q4 HEX SLIP ON
Item: 79-4205
Brand : FMF
Your Price: $449.99

Q4 HEX SLIP ON
79-4205
Weight: 5.3 lbs
Package Dimensions: 36.8 x 6.3 x 6.4
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Honda
2019
CRF450X
2020
CRF450X
2021
CRF450X
2022
CRF450X
2023
CRF450X
2024
CRF450X
2025
CRF450X
Q4 SLIP-ON SUZ
Item: 79-043377
Brand : FMF
Your Price: $449.99

Q4 SLIP-ON SUZ
79-043377
Weight: 7.1 lbs
Package Dimensions: 40.9 x 6.3 x 6.4
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Product fitment
Suzuki
2000
DR-Z400S
2001
DR-Z400S
2002
DR-Z400S
2003
DR-Z400S
2004
DR-Z400S
2005
DR-Z400S
DR-Z400SM
2006
DR-Z400S
DR-Z400SM
2007
DR-Z400S
DR-Z400SM
2008
DR-Z400S
DR-Z400SM
2009
DR-Z400S
DR-Z400SM
2010
DR-Z400S
DR-Z400SM
2011
DR-Z400S
DR-Z400SM
2012
DR-Z400S
DR-Z400SM
2013
DR-Z400S
DR-Z400SM
2014
DR-Z400S
DR-Z400SM
2015
DR-Z400S
DR-Z400SM
2016
DR-Z400S
DR-Z400SM
2017
DR-Z400S
DR-Z400SM
2018
DR-Z400S
DR-Z400SM
2019
DR-Z400S
DR-Z400SM
2020
DR-Z400S
DR-Z400SM
2021
DR-Z400S
DR-Z400SM
2022
DR-Z400S
DR-Z400SM
2023
DR-Z400S
DR-Z400SM
2024
DR-Z400S
DR-Z400SM
Q4 HEX S/A SLIP-ON MUFFLER YAM
Item: 79-4202
Brand : FMF
Your Price: $449.99

Q4 HEX S/A SLIP-ON MUFFLER YAM
79-4202
Weight: 6.65 lbs
Package Dimensions: 6.29 x 36.29 x 6.53
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Yamaha
2019
YZ250F
2020
YZ250F
YZ250FX
2021
YZ250F
YZ250FX
2022
YZ250F
YZ250FX
2023
YZ250F
YZ250FX
2024
YZ250F
YZ250FX
2025
YZ250F
YZ250FX
2026
YZ250F
Q4 HEX S/A YZ450F
Item: 79-4173
Brand : FMF
Your Price: $449.99

Q4 HEX S/A YZ450F
79-4173
Weight: 5.65 lbs
Package Dimensions: 36.9 x 6.4 x 6.3
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Yamaha
2018
YZ450F
2019
WR450F
YZ450F
YZ450FX
2020
YZ450F
YZ450FX
2021
YZ450F
YZ450FX
2022
YZ450F
YZ450FX
2023
YZ450F
YZ450FX
2024
YZ450F
YZ450FX
2025
YZ450F
YZ450FX
2026
YZ450F
Q4 HEX MUFFLER KTM
Item: 79-4206
Brand : FMF
Your Price: $449.99

Q4 HEX MUFFLER KTM
79-4206
Weight: 5.95 lbs
Package Dimensions: 23.46 x 7.32 x 5.35
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Product fitment
Gas-Gas
2021
EC 350F
2022
EC 350F
2023
EC 350F
Husqvarna
2020
FE 350
FE 450
FE 501
2021
FE 350
FE 450
FE 501
2022
FE 350
FE 450
FE 501
2023
FE 350
FE 450
FE 501
KTM
2020
350 XCF-W
500 XCF-W
2021
350 XCF-W
500 XCF-W
2022
350 XCF-W
500 XCF-W
2023
350 XCF-W
500 XCF-W
Q4 HEX S/A SLIP-ON
Item: 79-4193
Brand : FMF
Your Price: $449.99

Q4 HEX S/A SLIP-ON
79-4193
Weight: 5.9 lbs
Package Dimensions: 23.46 x 7.4 x 5.27
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Husqvarna
2016
FC 250
FC 350
FC 450
2017
FC 250
FC 350
FC 450
FE 250
FE 350
FE 450
FE 501
FX 350
FX 450
2018
FC 250
FC 350
FC 450
FE 250
FE 350
FE 450
FE 501
FX 350
FX 450
2019
FE 250
FE 350
FE 450
FE 501
KTM
2015
250 SX-F Factory Edition
450 SX-F Factory Edition
2016
250 SX-F
250 XC-F
350 SX-F
350 XC-F
450 SX-F
450 XC-F
2017
250 SX-F
250 XC-F
350 SX-F
350 XC-F
450 EXC-F
450 SX-F
450 XC-F
500 EXC-F
2018
250 SX-F
250 XC-F
350 SX-F
350 XC-F
450 EXC-F
450 SX-F
450 XC-F
500 EXC-F
2019
450 EXC-F
500 EXC-F
Q4 HEX S/A MUFFLER
Item: 79-045667
Brand : FMF
Your Price: $449.99

Q4 HEX S/A MUFFLER
79-045667
Weight: 5.65 lbs
Package Dimensions: 6.29 x 36.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Product fitment
Beta
2020
350 RR (RE)
430 RR (RE)
480 RR (RE)
2021
350 RR (RE)
430 RR (RE)
480 RR (RE)
2022
350 RR (RE)
430 RR (RE)
480 RR (RE)
2023
350 RR (RE)
430 RR (RE)
480 RR (RE)
2024
350 RR (RE)
430 RR (RE)
480 RR (RE)
2025
350 RR (RE)
430 RR (RE)
480 RR (RE)
Q4 HEX MFLR KAW KX450
Item: 79-4128
Brand : FMF
Your Price: $449.99

Q4 HEX MFLR KAW KX450
79-4128
Weight: 6 lbs
Package Dimensions: 36.53 x 6.37 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Kawasaki
2019
KX450F
2020
KX450F
2021
KX450F
KX450X
2022
KX450F
KX450X
2023
KX450F
KX450X
Q4 HEX S/A MUFFLER KTM
Item: 79-4192
Brand : FMF
Your Price: $449.99

Q4 HEX S/A MUFFLER KTM
79-4192
Weight: 6.3693 lbs
Package Dimensions: 6.29 x 36.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Husqvarna
2014
FE 250
FE 350
2015
FE 250
FE 350
2016
FE 250
FE 350
KTM
2005
250 SX-F
2006
250 SX-F
2007
250 SX-F
250 XC-F
450 SX-F
2008
250 SX-F
250 XC-F
450 SX-F
505 Sx-F
530 XC-W 4-Stroke
2009
250 SX-F
250 XC-F
250 XCF-W
350 XCF-W
450 SX-F
505 Sx-F
2010
250 SX-F
250 XC-F
250 XCF-W
350 SX-F
350 XC-F
350 XCF-W
450 SX-F
2011
250 SX-F
250 XC-F
250 XCF-W
350 SX-F
350 XC-F
350 XCF-W
450 SX-F
2012
250 SX-F
250 XC-F
250 XCF-W
350 SX-F
350 XC-F
350 XCF-W
450 SX-F
450 XCF-W
500 XCF-W
2013
250 SX-F
250 XC-F
250 XCF-W
350 SX-F
350 XC-F
350 XCF-W
450 SX-F
450 XCF-W
500 XCF-W
2014
250 SX-F
250 XC-F
250 XCF-W
350 SX-F
350 XC-F
350 XCF-W
450 SX-F
450 XCF-W
500 XCF-W
2015
250 SX-F
250 XC-F
250 XCF-W
350 SX-F
350 XC-F
350 XCF-W
450 SX-F
450 XCF-W
500 XCF-W
2016
500 XCF-W
Q4 S/A HEX YZ250F '14
Item: 79-4189
Brand : FMF
Your Price: $449.99

Q4 S/A HEX YZ250F '14
79-4189
Weight: 5.7 lbs
Package Dimensions: 43.14 x 8.34 x 8.42
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Yamaha
2014
YZ250F
2015
WR250F
YZ250F
YZ250FX
2016
WR250F
YZ250F
YZ250FX
2017
WR250F
YZ250F
YZ250FX
2018
WR250F
YZ250F
YZ250FX
2019
WR250F
YZ250FX
Q4 S/A MUFFLER HEX YAM WR450
Item: 79-4180
Brand : FMF
Your Price: $449.99

Q4 S/A MUFFLER HEX YAM WR450
79-4180
Weight: 5.2 lbs
Package Dimensions: 36.92 x 6.45 x 6.22
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Yamaha
2012
WR450F
2013
WR450F
2014
WR450F
2015
WR450F
Q4 HEX MFLR KAW KX450
Item: 79-042402
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX MFLR KAW KX450
79-042402
Weight: 6.5 lbs
Package Dimensions: 24.56 x 11.81 x 5.43
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Product fitment
Kawasaki
2024
KX450F
KX450X
2025
KX450F
KX450X
2026
KX450F
KX450X
Q4 HEX BETA
Item: 79-4213
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX BETA
79-4213
Weight: 8 lbs
Package Dimensions: 42.91 x 8.18 x 8.11
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Beta
2010
400 RR
450 RR
520 RR
2011
350 RR
400 RR
450 RR
520 RR
2012
350 RR
400 RR
450 RR
498 RR
2013
350 RR
400 RR
450 RR
498 RR
2014
350 RR
400 RR
450 RR
498 RR
2015
350 RR
430 RR
430 RS
480 RR
2016
350 RR
430 RR
430 RS
480 RR
2017
350 RR
430 RR
480 RR
2018
350 RR
430 RR
480 RR
Q4 S/A HEX HON CRF250L 2013
Item: 79-4139
Brand : FMF
Your Price: $479.99
The product is out of stock

Q4 S/A HEX HON CRF250L 2013
79-4139
Weight: 6.95 lbs
Package Dimensions: 36.53 x 6.37 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Honda
2013
CRF250L
2014
CRF250L
2015
CRF250L
2016
CRF250L
Q4 HEX S/A SLIP-ON
Item: 79-4162
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX S/A SLIP-ON
79-4162
Weight: 7.1385 lbs
Package Dimensions: 6.29 x 36.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
KTM
2012
350 EXC-F
500 EXC-F
2013
350 EXC-F
500 EXC-F
2014
350 EXC-F
500 EXC-F
2015
350 EXC-F
500 EXC-F
2016
350 EXC-F
500 EXC-F
Q4 HEX S/A KAW KLX250
Item: 79-4106
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX S/A KAW KLX250
79-4106
Weight: 6.3 lbs
Package Dimensions: 34.9 x 2.5 x 6.1
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Kawasaki
2018
KLX250S
Q4 HEX S/A MUFFLER
Item: 79-4138
Brand : FMF
Your Price: $479.99
The product is out of stock

Q4 HEX S/A MUFFLER
79-4138
Weight: 6.6 lbs
Package Dimensions: 36.69 x 6.37 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Honda
2017
CRF250L
2018
CRF250L
2019
CRF250L
2020
CRF250L
Q4 HEX S/A MUFFLER
Item: 79-4131
Brand : FMF
Your Price: $479.99
The product is out of stock

Q4 HEX S/A MUFFLER
79-4131
Weight: 6.7 lbs
Package Dimensions: 37 x 6.53 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Honda
2017
CRF250RL Rally
2018
CRF250RL Rally
2019
CRF250RL Rally
2020
CRF250RL Rally
Q4 HEX S/A KAW KLX250S
Item: 79-4105
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX S/A KAW KLX250S
79-4105
Weight: 6.9 lbs
Package Dimensions: 36.69 x 6.61 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Kawasaki
2009
KLX250S
2010
KLX250S
2011
KLX250S
2012
KLX250S
2013
KLX250S
2014
KLX250S
2015
KLX250S
Q4 HEX S/A WR250R/X '08
Item: 79-4171
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX S/A WR250R/X '08
79-4171
Weight: 4.55 lbs
Package Dimensions: 37 x 6.37 x 6.45
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Yamaha
2008
WR250R
WR250X
2009
WR250R
WR250X
2010
WR250R
WR250X
2011
WR250R
WR250X
2012
WR250R
2013
WR250R
2014
WR250R
2015
WR250R
2016
WR250R
2017
WR250R
2018
WR250R
2019
WR250R
2020
WR250R
2021
WR250R
HEX Q4 S/A MFLR
Item: 79-041609
Brand : FMF
Your Price: $449.99
The product is out of stock

HEX Q4 S/A MFLR
79-041609
Weight: 6.5 lbs
Package Dimensions: 36.92 x 6.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Product fitment
Honda
2022
CRF250R
CRF250RX
2023
CRF250R
CRF250RX
2024
CRF250R
CRF250RX
Q4 S/A HEX MUFFLER YAM
Item: 79-044472
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 S/A HEX MUFFLER YAM
79-044472
Weight: 8.3 lbs
Package Dimensions: 41 x 8 x 4.7
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Product fitment
Yamaha
2020
WR250F
2021
WR250F
Q4 HEX S/A KAW KX250F
Item: 79-4122
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX S/A KAW KX250F
79-4122
Weight: 4.55 lbs
Package Dimensions: 36.85 x 6.37 x 6.37
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Kawasaki
2017
KX250F
2018
KX250F
2019
KX250F
2020
KX250F
Q4 S/A MUFFLER HEX KAW KX250F '09-12
Item: 79-4129
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 S/A MUFFLER HEX KAW KX250F '09-12
79-4129
Weight: 7.1296 lbs
Package Dimensions: 6.29 x 36.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Kawasaki
2009
KX250F
2010
KX250F
2011
KX250F
2012
KX250F
2013
KX250F
2014
KX250F
2015
KX250F
2016
KX250F
Q4 S/A HEX RMZ450
Item: 79-4178
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 S/A HEX RMZ450
79-4178
Weight: 7.1 lbs
Package Dimensions: 6.29 x 36.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Suzuki
2018
RM-Z450
2019
RM-Z450
2020
RM-Z450
2021
RM-Z450
2022
RM-Z450
2023
RM-Z450
2024
RM-Z450
Q4 HEX S/A YAM YZ450F 2014
Item: 79-4179
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX S/A YAM YZ450F 2014
79-4179
Weight: 6.85 lbs
Package Dimensions: 42.9 x 8.3 x 8.3
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Yamaha
2014
YZ450F
2015
YZ450F
2016
WR450F
YZ450F
YZ450FX
2017
WR450F
YZ450F
YZ450FX
2018
WR450F
YZ450FX
Q4 HEX S/A SLIP-ON
Item: 79-4200
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX S/A SLIP-ON
79-4200
Weight: 7.38 lbs
Package Dimensions: 6.29 x 36.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Kawasaki
2016
KX450F
2017
KX450F
2018
KX450F
Q4 HEX S/A SLIP-ON
Item: 79-4188
Brand : FMF
Your Price: $379.99
The product is out of stock

Q4 HEX S/A SLIP-ON
79-4188
Weight: 6.7883 lbs
Package Dimensions: 6.29 x 36.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Suzuki
2013
RM-Z450
2014
RM-Z450
2015
RM-Z450
2016
RM-Z450
2017
RM-Z450
Q4 S/A HEX CRF 450X '05-09 2012-14
Item: 79-4183
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 S/A HEX CRF 450X '05-09 2012-14
79-4183
Weight: 4.3 lbs
Package Dimensions: 36.69 x 6.37 x 6.45
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Model: Q4
Product fitment
Honda
2005
CRF450X
2006
CRF450X
2007
CRF450X
2008
CRF450X
2009
CRF450X
2010
CRF450X
2011
CRF450X
2012
CRF450X
2013
CRF450X
2014
CRF450X
2015
CRF450X
2016
CRF450X
2017
CRF450X
2018
CRF450X
Q4 HEX S/A MUFFLER
Item: 79-044463
Brand : FMF
Your Price: $449.99
The product is out of stock

Q4 HEX S/A MUFFLER
79-044463
Weight: 5.65 lbs
Package Dimensions: 6.29 x 36.69 x 6.29
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
- Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
- Well under the 96db sound output on most machines to satisfy strict sound requirements
- U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
Exhaust Type: Slip-On Muffler
Product fitment
Yamaha
2020
WR450F








