BMW S1000RR Rear Sprocket by Renthal — UltraLight 520-42P, Hard Anodized (2019-2023). A precision CNC-machined rear sprocket designed for responsive drive and dependable durability.

Crafted from 7075-T6 aluminum, the UltraLight cuts unsprung and rotating mass while maintaining strength. Tooth profile and hub geometry are engineered to tight tolerances for precise fitment, concentricity, and balanced load. Hard anodizing boosts wear resistance, and self-cleaning grooves help shed debris for consistent engagement.

Features

• 520 pitch, 42-tooth configuration; model years 2019-2023
• CNC machined from high-strength 7075-T6 aluminum
• Up to 66% lighter than steel sprockets
• Hard anodized for long-lasting wear resistance
• Precision tolerances and self-cleaning grooves between each tooth

Questions or need fitment advice? Call our Austin, TX team at 512-982-9393 or our Los Angeles, CA area team at 562-981-6800. We offer installation and customization at both locations.

Buying multiple items? Contact us for shipping discounts.

We install on premises at both Austin, TX and Los Angeles, CA locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov