Top End Service Kit
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-41056K
Brand : KPMI
Your Price: $660.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-41056K
Weight: 1.9 lbs
Package Dimensions: 8 x 8 x 2.75
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Honda
2004
CRF250R
CRF250X
2005
CRF250R
CRF250X
2006
CRF250R
CRF250X
2007
CRF250R
CRF250X
2008
CRF250X
2009
CRF250X
2010
CRF250X
2011
CRF250X
2012
CRF250X
2013
CRF250X
2015
CRF250X
2016
CRF250X
2017
CRF250X
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-41051K
Brand : KPMI
Your Price: $660.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-41051K
Weight: 1.9 lbs
Package Dimensions: 8 x 8 x 2.37
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Honda
2002
CRF450R
2003
CRF450R
2004
CRF450R
2005
CRF450R
2006
CRF450R
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-41055K
Brand : KPMI
Your Price: $660.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-41055K
Weight: 1.9 lbs
Package Dimensions: 8 x 8 x 2.37
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-43006K
Brand : KPMI
Your Price: $660.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-43006K
Weight: 1.9 lbs
Package Dimensions: 8 x 8 x 2.75
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Suzuki
2000
DR-Z400
2001
DR-Z400
2002
DR-Z400
2003
DR-Z400
2004
DR-Z400
2005
DR-Z400SM
2006
DR-Z400SM
2007
DR-Z400SM
2008
DR-Z400SM
2009
DR-Z400SM
2010
DR-Z400SM
2011
DR-Z400SM
2012
DR-Z400SM
2013
DR-Z400SM
2014
DR-Z400SM
2015
DR-Z400SM
2016
DR-Z400SM
2017
DR-Z400SM
2018
DR-Z400SM
2019
DR-Z400SM
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-44031K
Brand : KPMI
Your Price: $732.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-44031K
Weight: 1.7 lbs
Package Dimensions: 8 x 8 x 2.37
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Yamaha
2014
YZ250F
2015
YZ250F
YZ250FX
2016
YZ250F
YZ250FX
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-41052K
Brand : KPMI
Your Price: $660.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-41052K
Weight: 1.9 lbs
Package Dimensions: 8 x 8 x 2.37
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Honda
2007
CRF450R
2008
CRF450R
TOP END SERVICE KIT SUZ
Item: 191-43007K
Brand : KPMI
Your Price: $707.95
TOP END SERVICE KIT SUZ
191-43007K
Weight: 1.6 lbs
Package Dimensions: 8 x 8 x 2.75
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Suzuki
2006
Lt-R450 Quadracer
2007
Lt-R450 Quadracer
2008
Lt-R450 Quadracer
2009
Lt-R450 Quadracer
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-44032K
Brand : KPMI
Your Price: $736.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-44032K
Weight: 1.8 lbs
Package Dimensions: 8 x 8 x 2.37
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Yamaha
2003
WR450F
YZ450F
2004
WR450F
YZ450F
2005
WR450F
YZ450F
2006
WR450F
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-41053K
Brand : KPMI
Your Price: $660.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-41053K
Weight: 1.9 lbs
Package Dimensions: 8 x 8 x 2.37
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
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
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-41054K
Brand : KPMI
Your Price: $660.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-41054K
Weight: 1.9 lbs
Package Dimensions: 8 x 8 x 2.37
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
Item: 191-44033K
Brand : KPMI
Your Price: $736.95
TOP END SERVICE KIT SS VALVE CONVERSION W/SPRINGS
191-44033K
Weight: 1.8 lbs
Package Dimensions: 8 x 8 x 2.37
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Yamaha
2006
YZ450F
2007
WR450F
YZ450F
2008
WR450F
YZ450F
2009
WR450F
YZ450F
2010
WR450F
2011
WR450F
2012
WR450F
2013
WR450F
2014
WR450F
2015
WR450F
TOP END SERVICE KIT YAM
Item: 191-44034K
Brand : KPMI
Your Price: $736.95
The product is out of stock
TOP END SERVICE KIT YAM
191-44034K
Weight: 1.71 lbs
Package Dimensions: 8 x 8 x 2.75
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Yamaha
2004
YFZ450
2005
YFZ450
2006
YFZ450
2007
YFZ450
2008
YFZ450
2009
YFZ450
TOP END SERVICE KIT YAM
Item: 191-44035K
Brand : KPMI
Your Price: $736.95
The product is out of stock
TOP END SERVICE KIT YAM
191-44035K
Weight: 1.71 lbs
Package Dimensions: 8 x 8 x 2.75
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
- Designed specifically for the performance demands of popular racing MX Bikes and Quads
- Pistons designed to maintain the stock compression after the effects of the dished stainless valves
- 2618 Alloy Fully CNC Machined Piston with performance skirt coating
- Black Diamond™ Stainless Steel conversion system significantly increases valve durability
- Lightweight Racing Spring Kit compatible with high performance cams
- All of the gaskets, rings, pins and seals required for a top end rebuild
- Includes Piston, Rings, Clips and Pin
- Includes Top End Gasket Kit by Cometic
- Includes KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
- Includes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440” In. and Ex. Valve Lift
Product fitment
Yamaha
2009
YFZ450R
2010
YFZ450R
2011
YFZ450R
2012
YFZ450R
2013
YFZ450R
2014
YFZ450R
2015
YFZ450R
2016
YFZ450R
2017
YFZ450R
2018
YFZ450R
2019
YFZ450R
2020
YFZ450R
These pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we’ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond™ Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.
