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.
The Renthal UltraLight Rear Chainwheel, part number 397U-520-45P-HA, is engineered for high-performance powersports applications. Crafted from CNC-machined 7075 T6 aluminum, this sprocket offers exceptional strength and durability while weighing approximately 0.35 pounds, making it 66% lighter than traditional steel counterparts. Its precise manufacturing process ensures a perfect fit, optimal concentricity, and even load distribution, which are critical factors for maximizing power transfer and prolonging component life. The tooth profile is specifically designed to enhance grip and efficiency, contributing to improved acceleration and overall vehicle performance. The use of high-strength aluminum combined with advanced surface treatments ensures long-lasting wear resistance, even under demanding racing conditions. Designed to fit a 76 x 100 PCD configuration, this sprocket is suitable for a range of high-performance powersports machines, including those used in competitive racing environments. Whether upgrading an existing setup or building a new race-ready system, the Renthal UltraLight Rear Chainwheel provides a lightweight, reliable, and precisely engineered solution that meets the rigorous demands of motorsports. Its compatibility with various high-end wheel assemblies makes it a versatile choice for professional and enthusiast riders alike, ensuring that every ride benefits from superior power transfer and durability.
Features:
- Material: CNC machined from 7075 T6 aluminum for high strength and low weight
- Weight reduction: 66% lighter than steel, enhancing performance and acceleration
- Precision engineering: Ensures perfect fitment, concentricity, and load dispersion
- Tooth design: Engineered for maximum power transfer and improved grip
- Durability: High wear resistance thanks to advanced surface treatments
- Compatibility: Fits 76 x 100 PCD configurations commonly used in powersports applications
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