Description
Reducing unsprung weight on your Yamaha directly improves acceleration response and handling precision—critical factors whether you’re racing or pushing your machine to its limits. The Renthal Ultralight Rear Sprocket delivers a 66% weight reduction over stock steel, giving you measurable performance gains without sacrificing the durability you need for sustained high-performance riding. The self-cleaning mud grooves ensure consistent power transfer in all conditions, eliminating the performance loss that comes from dirt buildup on traditional sprockets.
- Tooth Count: 40T
- Chain Pitch: 520
- Material: 7075-T6 aluminum
- Weight: 66% lighter
- Finish: Silver anodized
- Self-cleaning: Mud grooves
- Construction: CNC-machined
- Compatibility: Yamaha YFM250R, YFM700R, YFZ450R
- Installation: Bolt-on
- MPN: 437U-520-40GBSI
