RFX FXRS 57-39 99BU is an aluminum rear sprocket designed for KTM, Husqvarna, and Gas Gas models. Made from CNC machined 7075 aerospace aluminum, it offers strength and lightweight performance. The sprocket features chamfered weight-reducing cutouts, mud clearing grooves for extended sprocket life, and is finished with a two-tone anodized and polished surface for a factory look.
Laser etched RFX logo ensures brand authenticity. Strengthening gussets provide added durability under stress. The sprocket's design enhances performance by reducing weight while maintaining structural integrity, making it suitable for aggressive riding styles. The kit includes the sprocket and mounting hardware.
Compatible with models from 1999 to 2023, including KTM, Husqvarna, and Gas Gas bikes. Please verify your bike's specifications before purchase. Contact Moto-House MX for fitment assistance.
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
