The RK 520 Aluminum Race Chain and Sprocket Kit is designed for BMW S 1000 RR riders and racers seeking reduced rotating mass and responsive race gearing. This kit includes RK’s premium lightweight XW-ring sealed 520 racing chain with a durable gold finish, a Driven 7075 T6511 lightweight aluminum rear sprocket with black hard anodizing, and Driven C45 steel front sprockets that are case hardened and quenched for reliable performance.
Designed specifically for the BMW S 1000 RR, the RK 520 Aluminum Race Kit includes a front sprocket with one fewer tooth than the stock configuration. This gearing setup helps deliver quicker launches and faster acceleration through the gears, allowing the motorcycle to reach its redline more quickly while maintaining familiar handling characteristics. The combination of lightweight components and race-oriented gearing supports improved throttle response for track and competition use.
Manufactured by RK and supplied under the Driven performance line, this kit provides a coordinated chain and sprocket solution rather than requiring individual component selection. The sealed XW-ring chain helps retain lubrication and protect against contamination, while the lightweight aluminum rear sprocket and hardened steel front sprockets provide a purposeful balance of weight savings and durability. Verify the motorcycle model, year, and existing drivetrain configuration before installation to ensure proper fitment. Manufacturer part number and vendor part number: 9101-128DGX.
Features:
- Fitment: Designed for the BMW S 1000 RR
- Chain Size: 520 racing chain configuration
- Chain Finish: Gold finish with XW-ring sealing
- Rear Sprocket: Driven 7075 T6511 lightweight aluminum construction with black hard anodizing
- Front Sprocket: Driven C45 steel construction with case hardening and quenching
- Gearing: Includes a front sprocket with one fewer tooth than stock
- Performance: Reduces rotating mass and supports quicker acceleration to redline
- Brand: RK
- Manufacturer Part Number: 9101-128DGX
- Vendor Part Number: 9101-128DGX