RFX FXRS 31-51 99BK is an aluminum rear sprocket designed for 1999 Yamaha models, featuring a 51-tooth configuration.
Constructed from CNC-machined 7075 aerospace aluminum, this sprocket offers strength and lightweight properties, with chamfered cutouts to reduce weight and mud clearing grooves to extend sprocket life.
The kit includes the sprocket with laser-etched RFX logo and a two-tone anodized polished finish that provides a factory bike appearance. Strengthening gussets enhance durability, making it suitable for demanding riding conditions.
Designed to improve power transfer and longevity, this sprocket combines performance with a sleek look, ideal for riders seeking reliable aftermarket parts.
Features:
Laser etched RFX logo
CNC machined from 7075 aerospace aluminum
Strengthening gussets
Chamfered weight-reducing cutouts
Mud clearing grooves for longer lasting sprocket life
2-tone color anodized/ polished finish for that Factory Bike look
