Vortex aluminum rear sprockets are 100% CNC-machined performance replacements that reduce rotating mass compared to stock steel, available in 420 and 525 chain pitches in black and silver anodized finishes. A unique tooth profile and weight-saving cutouts make them a straightforward drivetrain upgrade for street and track riders.
- 100% CNC-machined aluminum for improved concentricity over cast or stamped alternatives
- Lightweight construction reduces rotating mass compared to OEM steel sprockets, supporting faster acceleration response
- Unique tooth design extends sprocket service life
- Weight-saving cutouts further reduce rotating weight
- Anodized finish in black and silver; covers 420 and 525 chain pitches
Spec: Position: Rear · Pitch: 420 · Teeth: 33 · Material: Aluminum · Color: Black
Fitment
- Honda GROM MSX125 2014–2021
- Honda MONKEY 2019
- Honda MONKEY 2019–2021
- Honda TRAIL 125 CT125 2021–2024
Specifications
| Position | Rear |
|---|---|
| Chain Pitch | 420 |
| Teeth | 33 |
| Material | Aluminum |
| Finish | Black |
| Best For | Street, Track |
Verified from Garamoto’s catalog & fitment data.

















