Renthal Part Number ren509U-520-15P Front Chainwheel for BMW S1000R, S1000RR, and S1000XR

Renthal front chain-wheels are simply the finest front chain-wheel on the market today. Our Front chain-wheels feature a specially developed nickel-chrome-molybdenum steel which is case hardened and core refined to give the ultimate combination of strength and hardness. Renthal took extra time to reduce and machine away surplus mass of the Ultralight chain wheels. Chain-wheel mass reduction offers a two-fold gain. The overall mass of the machine is slightly reduced and the rotating mass of the gearbox is reduced, allowing faster engine spin-up and shorter over-run. Renthal's ultralight chainwheel is used by more factory motocross and suprecross team than any other chainwheel.

• Renthal's in house CNC facilities accurately machine each individual front chainwheel to the tightest tolerance possible
• Each chainwheel is introduced to great heat that hardens the surface to ensure the longest service life possible
• The strength and hardness comes from the core refined 655M13 Nickel-Chrome-Molybdenum alloy steel
• The ultralight design reduces weight to maximize performance

The Renthal ren509U-520-15P front chainwheel is designed for high-performance motocross and supercross applications, offering exceptional strength and lightweight construction. Crafted from a specially developed nickel-chrome-molybdenum steel alloy, this chainwheel features a case-hardened surface that ensures superior durability and resistance to wear. The core refined 655M13 steel provides an optimal balance of hardness and toughness, allowing the chainwheel to withstand the rigors of demanding riding conditions. Renthal’s in-house CNC machining process guarantees precise manufacturing, ensuring each chainwheel meets the tightest tolerances for reliable performance. The ultralight design reduces overall weight, which enhances engine responsiveness, accelerates spool-up times, and shortens over-run for improved handling and acceleration. These features collectively translate into a performance advantage on the track, making it a preferred choice among factory teams and serious enthusiasts alike. The chainwheel is engineered for easy installation and long service life, with surface hardening processes that extend its lifespan even under aggressive riding conditions. Whether upgrading your BMW S1000R, S1000RR, or S1000XR, this chainwheel delivers the durability, precision, and lightness necessary for competitive racing or recreational riding. Trust Renthal’s reputation for quality and innovation in your powersports drivetrain components, and experience the difference in your motorcycle’s performance.

Features:

• Constructed from case-hardened nickel-chrome-molybdenum steel for durability and wear resistance

• Precision CNC machined in-house to ensure tight tolerances and reliable fit

• Ultralight design reduces overall weight to enhance engine responsiveness

• Surface hardened through heat treatment for extended service life

• Engineered for high-performance motocross and supercross applications

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Units Per Sku: 1
Regular Stock: t