Renthal Rear Sprocket 51 Tooth Aluminum for Yamaha 150U-520-51GBHA

Reducing unsprung weight directly improves acceleration and handling—two critical factors that separate competitive setups from stock configurations. The Renthal 51-tooth rear sprocket cuts weight by 66% compared to steel while maintaining the strength needed for high-demand riding. If you're serious about performance, this precision-machined aluminum sprocket pays dividends in both lap times and overall bike responsiveness.

Engineered from 7075 T6 aluminum and CNC-machined to tight tolerances, this sprocket ensures consistent power transfer to the rear wheel with zero slop. The hard anodized finish resists corrosion in harsh conditions, while the self-cleaning mud grooves keep performance stable whether you're on pavement or in the dirt. This is a bolt-on upgrade that delivers measurable gains without requiring fabrication or special tools.

• Tooth Count: 51T
• Material: 7075 T6 aluminum
• Weight Reduction: ~66% vs. steel
• Construction: CNC-machined
• Finish: Hard anodized
• Features: Self-cleaning grooves
• Fitment: Yamaha-specific
• Installation: Bolt-on