Renthal 24+ BMW S1000RR/ 21+M1000RR Rear Hard Anodized Sprocket - 520-46P Teeth

Renthal UltraLight Rear Chainwheels are CNC machined from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer. A combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see why Renthal's light weight all aluminum rear sprockets can be found on the rear wheels of many factory race team machines.

• Renthal's in house CNC facilities accurately machine each individual rear chainwheel to the tightest tolerance possible ensuring an accurate and reliable fit
• Specially enhanced 7075 T6 aluminum alloy is used to create the perfect rear chainwheel, that is lightweight, durable and strong
• Features self-cleaning mud grooves between every tooth to prevent dirt build up
• 66% lighter than steel

Upgrade your BMW sportbike’s final-drive performance with the Renthal UltraLight Rear Chainwheel, part number REN510U-520-46P-HA. Designed for precise fitment and efficient power transfer, this 46-tooth rear sprocket is CNC machined from specially enhanced 7075-T6 aluminum alloy and finished with a hard anodized surface treatment for improved durability. Its lightweight construction is approximately 66% lighter than a comparable steel sprocket, helping reduce unsprung and rotating mass without compromising strength.

• Renthal’s in-house CNC manufacturing accurately machines each rear chainwheel to tight tolerances for reliable fitment and concentricity


• Specially enhanced 7075-T6 aluminum alloy provides a strong, lightweight, and durable sprocket construction


• Hard anodized surface treatment helps improve resistance to wear during demanding street and track use


• Self-cleaning mud grooves between each tooth help reduce dirt buildup and support consistent chain engagement


• Precision tooth profiling is engineered to promote efficient power transfer and smooth drivetrain operation


• Approximately 66% lighter than steel for reduced rotating and unsprung weight

The Renthal 520-46P-HA rear sprocket is computer engineered and tested to support accurate alignment, balanced load dispersion, and dependable performance. The combination of high-strength aluminum, precise CNC machining, tooth profiling, and hard anodizing makes it a practical choice for riders seeking responsive drivetrain performance and race-proven construction. Renthal’s lightweight all-aluminum rear chainwheels are widely used in high-performance powersports applications where weight reduction and durability are important.
This Renthal rear sprocket fits select BMW applications, including the 2021–2025 BMW M1000RR and the 2024–2025 BMW S1000RR. Verify the motorcycle model year, chain size, tooth count, and original-equipment specifications before installation. Professional installation and proper chain alignment, torque, and adjustment are recommended for safe and reliable operation.

Features:

• CNC machined from specially enhanced 7075-T6 aluminum alloy

• Hard anodized finish for improved surface durability

• 46-tooth rear sprocket profile for 520 chain applications

• Approximately 66% lighter than a comparable steel sprocket

• Self-cleaning grooves between teeth help reduce mud and dirt buildup

• Precision machining supports accurate fitment and concentricity

• Engineered tooth profiling promotes efficient power transfer

• Fits select 2021–2025 BMW M1000RR and 2024–2025 BMW S1000RR models

Fitment:
BMW M1000RR Base 2021
BMW M1000RR Base 2022
BMW M1000RR Base 2023
BMW M1000RR Base 2024
BMW M1000RR Base 2025
BMW S1000RR Base 2024
BMW S1000RR Base 2025