Verified Honda Description
Honda catalogs this component as GEAR COMP., STARTER REDUCTION, while the dealer listing may shorten the wording to GEAR. The catalog description provides the clearest identification of the part.
Honda · Genuine OEM Part
Honda 28130-MJE-D00 is identified in the Starting Driven Gear assembly as GEAR COMP., STARTER REDUCTION (43T/8T). The component is a reduction gear assembly within the engine starting system, where its geared teeth transfer starter-motor drive through the starter gear train. Honda lists the part with a 43T/8T tooth arrangement and a required quantity of one in the assembly catalog.
Honda catalogs this component as GEAR COMP., STARTER REDUCTION, while the dealer listing may shorten the wording to GEAR. The catalog description provides the clearest identification of the part.
The Honda parts catalog specifies a 43T/8T tooth arrangement for this starter reduction gear assembly. That designation is an important ordering detail because related starter gears carry different tooth counts.
The part appears as a numbered component in Honda's Starting Driven Gear assembly, with one required. Ordering by the complete Honda part number helps distinguish it from the adjacent starter driven and starter reduction gear components.
The starter reduction gear is part of the mechanical gear train that carries cranking torque from the starter motor toward the engine. Its two listed tooth counts identify the reduction relationship represented by the component. Honda places it alongside the starter driven gear, another starter reduction gear, washers, a pin and a needle bearing in the Starting Driven Gear assembly.
| Honda Part Number | 28130-MJE-D00 |
|---|---|
| Honda Catalog Description | GEAR, STARTER REDUCTION (43T/8T) |
| OEM Catalog Description | GEAR COMP., STARTER REDUCTION (43T/8T) |
| Part Type | Starter reduction gear |
| Assembly | Starting Driven Gear |
| Tooth count | 43T/8T |
| Required quantity | 1 |
| Model | Type | Model Years |
|---|---|---|
| CB650F | Motorcycle | 2018 |
| CB650FA | Motorcycle | 2018 |
| CB650R | Motorcycle | 2019–2020 |
| CB650RA | Motorcycle | 2019–2023 |
| CB650R ABS (CB650RA) | Motorcycle | 2021–2023 |
| CBR650F | Motorcycle | 2014–2016, 2018 |
| CBR650FA | Motorcycle | 2014–2016, 2018 |
| CBR650R | Motorcycle | 2019–2020 |
| CBR650RA | Motorcycle | 2019–2023 |
| CBR650R ABS (CBR650RA) | Motorcycle | 2021–2023 |
Model applications as listed in Honda's dealer parts catalog for part number 28130-MJE-D00.
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.