520 Conversion - Superlite RST Series Black Steel Rear Yamaha Race Sprocket - SKU# 12509RST
- The industries first centerless design steel rear race sprocket
- 3X Longer life over conventional alloy rear sprockets
- Exclusive tooth profile for extended mileage output
- Computer generated RST design combines huge weight savings with exceptional strength
- Induction hardened steel with a black zinc plated finish
