RFX FXRS 57-42 99BU aluminum rear sprocket is designed for off-road motorcycles, providing durability and lightweight performance. CNC machined from 7075 aerospace aluminum, this sprocket offers a robust construction that withstands rigorous riding conditions. The inclusion of strengthening gussets enhances structural integrity while chamfered cutouts reduce weight without sacrificing strength. Mud clearing grooves extend sprocket life by preventing debris buildup, ensuring consistent performance over time. The sprocket features a distinctive two-tone anodized and polished finish, giving it a factory bike appearance.
This sprocket is suitable for KTM, Husqvarna, and GasGas models, offering an optimal balance of strength and weight reduction. Its precise engineering ensures compatibility and reliable operation in demanding environments. Easy installation and long-lasting materials make this sprocket a practical upgrade for racers and enthusiasts alike.
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
