Transmission Gear
This component belongs to the transmission assembly and is specifically identified as the second gear on the mainshaft. Its catalog name separates it from similarly numbered countershaft gears.
Honda · Genuine OEM Part
Honda part 23431-MKR-D10 is a 17-tooth mains haft second gear listed in the transmission assembly. It is identified in Honda parts-catalog data as GEAR, MAINSHAFT SECOND(17T), distinguishing it from the separate countershaft gears in the same transmission section.
As a transmission gear, it engages with its corresponding gear to transmit engine torque through the selected ratio. Honda catalog data lists one required part for the assembly. The official catalog description and tooth count should be retained when ordering or comparing this component with nearby transmission gears.
This component belongs to the transmission assembly and is specifically identified as the second gear on the mainshaft. Its catalog name separates it from similarly numbered countershaft gears.
Honda identifies this gear with a 17T designation, meaning the cataloged gear has 17 teeth. That specification is part of the official Honda description for this part number.
The complete Honda number 23431-MKR-D10 identifies this specific mains haft gear. Matching the full number helps distinguish it from adjacent transmission gears with similar descriptions.
Honda parts-catalog data places 23431-MKR-D10 in the transmission section and names it GEAR, MAINSHAFT SECOND(17T). No directional supersession statement was found in the sources reviewed, so no older or newer replacement number is assigned.
| Honda Part Number | 23431-MKR-D10 |
|---|---|
| Honda Catalog Description | GEAR, MAINSHAFT SECOND (17T) |
| OEM Catalog Description | GEAR, MAINSHAFT SECOND(17T) |
| Part Type | Gear |
| Assembly | Transmission |
| Tooth count | 17T |
| Catalog quantity | 1 |
| Model | Type | Model Years |
|---|---|---|
| CBR1000SP | Motorcycle | 2021–2023 |
Model applications as listed in Honda's dealer parts catalog for part number 23431-MKR-D10.
Verify the Honda OEM part number for your specific model before ordering.
Compatible motorcycles, ATVs & side-by-sides
Verify your vehicle's model, year and specific configuration before ordering.