Description
Shaving rotational mass off your rear sprocket directly improves acceleration and throttle response—especially critical if you’re pushing your Yamaha hard on the track or trail. The Renthal 42-tooth sprocket delivers a 66% weight reduction over steel without sacrificing durability, thanks to its 7075-T6 aluminum construction and precision CNC machining. Self-cleaning mud grooves keep debris from accumulating, so you get consistent performance and extended sprocket life even in harsh riding conditions.
- 7075-T6 aluminum alloy
- 42-tooth, 520 chain
- CNC-machined precision fit
- 66% lighter than steel
- Self-cleaning mud grooves
- Silver finish
- Fits Yamaha YFM350X, YFM660R, YFS200, YFZ350
- Part Number: 130U-520-42GBSI
- Bolt-on installation
