Renthal 19+ BMW S1000R / 19-23 S1000RR / 20+ S1000XR Front Chainwheel - Part Number 509U-520-15P

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 509U-520-15P front chainwheel is designed for high-performance powersports applications, specifically compatible with BMW S1000R, S1000RR (2019-2023), and S1000XR models. Crafted from a specially developed nickel-chrome-molybdenum steel alloy, this chainwheel combines exceptional strength and hardness, ensuring durability under demanding riding conditions. Each unit is precision-machined in Renthal's in-house CNC facilities to achieve tight tolerances, guaranteeing perfect fit and reliable operation. The surface is case-hardened through a high-temperature treatment process, significantly extending the service life and resistance to wear. The ultralight design of this chainwheel reduces overall weight, aiding in faster engine spool-up and enhanced responsiveness, which is essential for competitive motocross and supercross racing. Reducing rotating mass translates directly into improved acceleration and reduced strain on the drivetrain, contributing to overall bike performance. Ideal for racers and enthusiasts seeking reliable durability combined with weight-saving advantages, this front chainwheel is a proven choice used by numerous factory teams. Installation is straightforward, and its robust construction ensures consistent performance over many riding seasons. Whether upgrading your existing setup or building a new race machine, the Renthal front chainwheel offers a superior balance of strength, weight reduction, and longevity, making it an essential component for high-performance powersports bikes.

Features:

• Constructed from case-hardened nickel-chrome-molybdenum steel for maximum strength and durability

• Precision CNC machined to tight tolerances for optimal fit and reliability

• High-temperature surface hardening process extends service life

• Ultralight design reduces overall weight and rotating mass for improved engine response

• Compatible with BMW S1000R, S1000RR (2019-2023), and S1000XR models