Product Description
Built to take high horsepower abuse found in late model H-D performance applications while providing elegant shift precision. The GrudgeBox is a tough overdrive 6-speed to replace your stock 6-speed! Standard shift pattern, Highlighted Wrinkle Black door.
Fits: 2018-Up Harley M8 Softail Models
- All gears are straight cut for negligible parasitic power loss, providing maximum power transfer to the rear wheel
- Wide-ratio gearing for heavier performance applications
- Built for aggressive take-offs and long distances at above-average speeds
- 250 RPM drop at higher highway speeds (approx. 80 mph)
- Engineering focus on excessive durability
- Bulletproof main drive gear bearing (patent pending)
- Gears up to 40% wider than stock
- Positive dog tooth engagement in gear with pie-shaped shift dogs
- Frictionless linear detent shift system for smooth shifting
- Redundant neutral detent to make it easy to find neutral
- Low effort, single-axis/linear motion ratchet pawl for crisp, tight and easy shifting
- More durable than stock
- No case modifications required for installation
Additional Information
| MPN | GB6-M8S03 |