Honda OEM Part 11397-MJP-G81 GASKET, REDUCTION COVER
- Product Code: 11397-MJP-G81
$10.46
- Genuine Honda OEM part
- New in original packaging
- Fits the models listed in the fitment chart
- Easy, no-hassle returns
This product is vehicle specific.
Find your vehicle to make sure this part fits before you order.
Ships in 4 to 9 days
Genuine Honda OEM Gasket, Reduction Cover (part number 11397-MJP-G81) from the Reduction Gear diagram. It fits Honda CRF1000DAC, CRF1100D2AC, CMX1100DAC, CRF1100D4AC, CRF1100D43AC, CMX1100D2AC and 9 more built from 2016 to 2025.
Fits these models
- CRF1000D3AC: 2016–2018
- CRF1000DAC: 2016–2019
- CRF1000D2AC: 2017–2019
- CRF1000D24AC: 2018–2019
- CRF1100D2AC: 2020, 2022–2024
- CRF1100D42AC: 2020
- CRF1100DAC: 2020, 2025
- CMX1100DAC: 2021–2025
- CRF1100D3AC: 2021
- CRF1100D4AC: 2021–2023
- CRF1100D43AC: 2022, 2024–2025
- CMX1100D2AC: 2023–2025
- CMX1100D22AC: 2024
- CMX1100D3AC: 2025
- NT1100DAC: 2025
See the Fitment tab for the full list with model codes.
Need Help Finding the Right Part?
Not sure it fits? Ask before you order — our team will check the part for your machine.
For a faster answer, include:
Year, make and model of your machine
VIN or frame / serial number
OEM part number or a photo of the old part
Find your ride
Check your current ride below to confirm product compatibility.
Honda
2025
- CMX1100D2AC (25) MOTORCYCLE, JPN, VIN# JH2SC87G-SK000001 TO JH2SC87G-SK099999
- CMX1100D3AC (25) MOTORCYCLE, JPN, VIN# JH2SC87M-SK000001 TO JH2SC87M-SK099999
- CMX1100DAC (25) MOTORCYCLE, JPN, VIN# JH2SC878-SK000001 TO JH2SC878-SK099999
- CRF1100D43AC (25) MOTORCYCLE, JPN, VIN# JH2SD15E-SK100001 TO JH2SD15E-SK199999
- CRF1100DAC (25) MOTORCYCLE, JPN, VIN# JH2SD155-SK100001 TO JH2SD155-SK199999
- NT1100DAC (25) MOTORCYCLE, JPN, VIN# JH2SC904-SK000001 TO JH2SC904-SK099999
2024
- CMX1100D22AC (24) MOTORCYCLE, JPN, VIN# JH2SC836-RK300001 TO JH2SC836-RK399999
- CMX1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SC831-RK300001 TO JH2SC831-RK399999
- CMX1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SC836-RK300001 TO JH2SC836-RK399999
- CMX1100DAC (24) MOTORCYCLE, JPN, VIN# JH2SC831-RK300001 TO JH2SC831-RK399999
- CRF1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SD155-RK000001 TO JH2SD155-RK099999
- CRF1100D43AC (24) MOTORCYCLE, JPN, VIN# JH2SD15E-RK000001 TO JH2SD15E-RK099999
2023
2022
2021
2020
2019
2018
- CRF1000D24AC (18) MOTORCYCLE, JPN, VIN# JH2SD045-JK200001 TO JH2SD045-JK299999
- CRF1000D2AC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999
- CRF1000D3AC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999
- CRF1000DAC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999
2017
- Honda CMX1100D2AC (25) MOTORCYCLE, JPN, VIN# JH2SC87G-SK000001 TO JH2SC87G-SK099999 REDUCTION GEAR
- Honda CMX1100D3AC (25) MOTORCYCLE, JPN, VIN# JH2SC87M-SK000001 TO JH2SC87M-SK099999 REDUCTION GEAR
- Honda CMX1100DAC (25) MOTORCYCLE, JPN, VIN# JH2SC878-SK000001 TO JH2SC878-SK099999 REDUCTION GEAR
- Honda CRF1100D43AC (25) MOTORCYCLE, JPN, VIN# JH2SD15E-SK100001 TO JH2SD15E-SK199999 GASKET KIT B
- Honda CRF1100D43AC (25) MOTORCYCLE, JPN, VIN# JH2SD15E-SK100001 TO JH2SD15E-SK199999 REDUCTION GEAR
- Honda CRF1100DAC (25) MOTORCYCLE, JPN, VIN# JH2SD155-SK100001 TO JH2SD155-SK199999 GASKET KIT B
- Honda CRF1100DAC (25) MOTORCYCLE, JPN, VIN# JH2SD155-SK100001 TO JH2SD155-SK199999 REDUCTION GEAR
- Honda NT1100DAC (25) MOTORCYCLE, JPN, VIN# JH2SC904-SK000001 TO JH2SC904-SK099999 GASKET KIT B
- Honda NT1100DAC (25) MOTORCYCLE, JPN, VIN# JH2SC904-SK000001 TO JH2SC904-SK099999 REDUCTION GEAR
- Honda CMX1100D22AC (24) MOTORCYCLE, JPN, VIN# JH2SC836-RK300001 TO JH2SC836-RK399999 GASKET KIT B
- Honda CMX1100D22AC (24) MOTORCYCLE, JPN, VIN# JH2SC836-RK300001 TO JH2SC836-RK399999 REDUCTION GEAR
- Honda CMX1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SC831-RK300001 TO JH2SC831-RK399999 GASKET KIT B
- Honda CMX1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SC831-RK300001 TO JH2SC831-RK399999 REDUCTION GEAR
- Honda CMX1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SC836-RK300001 TO JH2SC836-RK399999 GASKET KIT B
- Honda CMX1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SC836-RK300001 TO JH2SC836-RK399999 REDUCTION GEAR
- Honda CMX1100DAC (24) MOTORCYCLE, JPN, VIN# JH2SC831-RK300001 TO JH2SC831-RK399999 GASKET KIT B
- Honda CMX1100DAC (24) MOTORCYCLE, JPN, VIN# JH2SC831-RK300001 TO JH2SC831-RK399999 REDUCTION GEAR
- Honda CRF1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SD155-RK000001 TO JH2SD155-RK099999 GASKET KIT B
- Honda CRF1100D2AC (24) MOTORCYCLE, JPN, VIN# JH2SD155-RK000001 TO JH2SD155-RK099999 REDUCTION GEAR
- Honda CRF1100D43AC (24) MOTORCYCLE, JPN, VIN# JH2SD15E-RK000001 TO JH2SD15E-RK099999 GASKET KIT B
- Honda CRF1100D43AC (24) MOTORCYCLE, JPN, VIN# JH2SD15E-RK000001 TO JH2SD15E-RK099999 REDUCTION GEAR
- Honda CMX1100D2AC (23) MOTORCYCLE, JPN, VIN# JH2SC836-PK200001 GASKET KIT B
- Honda CMX1100D2AC (23) MOTORCYCLE, JPN, VIN# JH2SC836-PK200001 REDUCTION GEAR
- Honda CMX1100DAC (23) MOTORCYCLE, JPN, VIN# JH2SC831-PK200001 GASKET KIT B
- Honda CMX1100DAC (23) MOTORCYCLE, JPN, VIN# JH2SC831-PK200001 REDUCTION GEAR
- Honda CRF1100D2AC (23) MOTORCYCLE, JPN, VIN# JH2SD100-PK300001 GASKET KIT B
- Honda CRF1100D2AC (23) MOTORCYCLE, JPN, VIN# JH2SD100-PK300001 REDUCTION GEAR
- Honda CRF1100D4AC (23) MOTORCYCLE, JPN, VIN# JH2SD104-PK300001 GASKET KIT B
- Honda CRF1100D4AC (23) MOTORCYCLE, JPN, VIN# JH2SD104-PK300001 REDUCTION GEAR
- Honda CMX1100DAC (22) MOTORCYCLE, JPN, VIN# JH2SC831-NK100001 TO JH2SC831-NK199999 GASKET KIT B
- Honda CMX1100DAC (22) MOTORCYCLE, JPN, VIN# JH2SC831-NK100001 TO JH2SC831-NK199999 REDUCTION GEAR
- Honda CRF1100D2AC (22) MOTORCYCLE, JPN, VIN# JH2SD100-NK200001 TO JH2SD100-NK299999 GASKET KIT B
- Honda CRF1100D2AC (22) MOTORCYCLE, JPN, VIN# JH2SD100-NK200001 TO JH2SD100-NK299999 REDUCTION GEAR
- Honda CRF1100D43AC (22) MOTORCYCLE, JPN, VIN# JH2SD104-NK200001 GASKET KIT B
- Honda CRF1100D43AC (22) MOTORCYCLE, JPN, VIN# JH2SD104-NK200001 REDUCTION GEAR
- Honda CRF1100D4AC (22) MOTORCYCLE, JPN, VIN# JH2SD104-NK200001 TO JH2SD104-NK299999 GASKET KIT B
- Honda CRF1100D4AC (22) MOTORCYCLE, JPN, VIN# JH2SD104-NK200001 TO JH2SD104-NK299999 REDUCTION GEAR
- Honda CMX1100DAC (21) MOTORCYCLE, JPN, VIN# JH2SC831-MK000001 TO JH2SC831-MK099999 GASKET KIT B
- Honda CMX1100DAC (21) MOTORCYCLE, JPN, VIN# JH2SC831-MK000001 TO JH2SC831-MK099999 REDUCTION GEAR
- Honda CRF1100D3AC (21) MOTORCYCLE, JPN, VIN# JH2SD100-MK100001 GASKET KIT B
- Honda CRF1100D3AC (21) MOTORCYCLE, JPN, VIN# JH2SD100-MK100001 REDUCTION GEAR
- Honda CRF1100D4AC (21) MOTORCYCLE, JPN, VIN# JH2SD104-MK100001 GASKET KIT B
- Honda CRF1100D4AC (21) MOTORCYCLE, JPN, VIN# JH2SD104-MK100001 REDUCTION GEAR
- Honda CRF1100D2AC (20) MOTORCYCLE, JPN, VIN# JH2SD100-LK000001 TO JH2SD100-LK099999 GASKET KIT B
- Honda CRF1100D2AC (20) MOTORCYCLE, JPN, VIN# JH2SD100-LK000001 TO JH2SD100-LK099999 REDUCTION GEAR
- Honda CRF1100D42AC (20) MOTORCYCLE, JPN, VIN# JH2SD104-LK000001 TO JH2SD104-LK099999 GASKET KIT B
- Honda CRF1100D42AC (20) MOTORCYCLE, JPN, VIN# JH2SD104-LK000001 TO JH2SD104-LK099999 REDUCTION GEAR
- Honda CRF1100DAC (20) MOTORCYCLE, JPN, VIN# JH2SD100-LK000001 TO JH2SD100-LK099999 GASKET KIT B
- Honda CRF1100DAC (20) MOTORCYCLE, JPN, VIN# JH2SD100-LK000001 TO JH2SD100-LK099999 REDUCTION GEAR
- Honda CRF1000D24AC (19) MOTORCYCLE, JPN, VIN# JH2SD045-KK300001 GASKET KIT B
- Honda CRF1000D24AC (19) MOTORCYCLE, JPN, VIN# JH2SD045-KK300001 REDUCTION GEAR
- Honda CRF1000D2AC (19) MOTORCYCLE, JPN, VIN# JH2SD041-KK300001 GASKET KIT B
- Honda CRF1000D2AC (19) MOTORCYCLE, JPN, VIN# JH2SD041-KK300001 REDUCTION GEAR
- Honda CRF1000DAC (19) MOTORCYCLE, JPN, VIN# JH2SD041-KK300001 GASKET KIT B
- Honda CRF1000DAC (19) MOTORCYCLE, JPN, VIN# JH2SD041-KK300001 REDUCTION GEAR
- Honda CRF1000D24AC (18) MOTORCYCLE, JPN, VIN# JH2SD045-JK200001 TO JH2SD045-JK299999 GASKET KIT B
- Honda CRF1000D24AC (18) MOTORCYCLE, JPN, VIN# JH2SD045-JK200001 TO JH2SD045-JK299999 REDUCTION GEAR
- Honda CRF1000D2AC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999 GASKET KIT B
- Honda CRF1000D2AC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999 REDUCTION GEAR
- Honda CRF1000D3AC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999 GASKET KIT B
- Honda CRF1000D3AC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999 REDUCTION GEAR
- Honda CRF1000DAC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999 GASKET KIT B
- Honda CRF1000DAC (18) MOTORCYCLE, JPN, VIN# JH2SD041-JK200001 TO JH2SD041-JK299999 REDUCTION GEAR
- Honda CRF1000D2AC (17) MOTORCYCLE, JPN, VIN# JH2SD04H-HK000001 GASKET KIT B
- Honda CRF1000D2AC (17) MOTORCYCLE, JPN, VIN# JH2SD04H-HK000001 REDUCTION GEAR
- Honda CRF1000D3AC (17) MOTORCYCLE, JPN, VIN# JH2SD045-HK100001 GASKET KIT B
- Honda CRF1000D3AC (17) MOTORCYCLE, JPN, VIN# JH2SD045-HK100001 REDUCTION GEAR
- Honda CRF1000DAC (17) MOTORCYCLE, JPN, VIN# JH2SD041-HK100001 GASKET KIT B
- Honda CRF1000DAC (17) MOTORCYCLE, JPN, VIN# JH2SD041-HK100001 REDUCTION GEAR
- Honda CRF1000D3AC (16) MOTORCYCLE, JPN, VIN# JH2SD045-GK000001 TO JH2SD045-GK099999 GASKET KIT B
- Honda CRF1000D3AC (16) MOTORCYCLE, JPN, VIN# JH2SD045-GK000001 TO JH2SD045-GK099999 REDUCTION GEAR
- Honda CRF1000DAC (16) MOTORCYCLE, JPN, VIN# JH2SD041-GK000001 TO JH2SD041-GK099999 GASKET KIT B
- Honda CRF1000DAC (16) MOTORCYCLE, JPN, VIN# JH2SD041-GK000001 TO JH2SD041-GK099999 REDUCTION GEAR
Part Details
| Brand | Honda |
| Sku | 11397-MJP-G81 |
| Name | GASKET, REDUCTION COVER |
Free Shipping on Orders Over $99
Free ground shipping on US orders over $99, with tracking. Delivery time is shown before you pay, so you know when it arrives.
Support From People Who Ride
Not sure about size or fit? Ask us before you order. Our team rides too and will help you pick what suits your bike.
Genuine OEM & Trusted Brands
OEM parts for Honda, Yamaha, Kawasaki, Can-Am, Polaris and more, plus gear from makers riders trust. No no-name imports.
Parts That Fit Your Machine
Enter your machine’s type, year, make and model, and we’ll show only the parts and gear that fit it.

