RFX FXRS 37-48 99BU aluminum rear sprocket for Yamaha motorcycles. It is CNC machined from 7075 aerospace aluminum and features laser-etched RFX logos for authenticity.
The sprocket includes strengthening gussets and chamfered weight-reducing cutouts to optimize performance and reduce weight. Mud clearing grooves are incorporated to extend sprocket life and maintain optimal function under muddy conditions.
The kit comes with a 2-tone anodized and polished finish, giving it a factory bike appearance. Designed for durability and performance, this sprocket is suitable for aggressive riding and demanding conditions.
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
