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 2020 UltraLight Rear Chainwheel, part number 397U-520-42P, is engineered for high-performance powersports applications. Crafted from CNC-machined 7075 T6 aluminum, this rear sprocket offers exceptional strength while being 66% lighter than traditional steel alternatives, contributing to reduced overall vehicle weight and improved handling. Designed to meet the demands of competitive racing, the chainwheel features precise engineering for optimal fitment, concentricity, and load distribution, ensuring maximum power transfer from your engine to the track or trail.
Constructed with high-strength alloy and advanced manufacturing techniques, the Renthal chainwheel also benefits from durable surface treatments that enhance wear resistance and longevity. Its tooth profile is meticulously designed to optimize engagement with the chain, minimizing slippage and maximizing efficiency during intense riding conditions. Whether used in motocross, off-road racing, or other powersports disciplines, this lightweight sprocket delivers reliable performance and consistent durability.
The part is suitable for a variety of powersports machines and is compatible with 76-tooth x 100 pitch bolt patterns. Its sleek design and high-quality materials make it a popular choice among factory race teams and serious enthusiasts seeking to improve their vehicle’s power transfer capabilities while reducing weight. Easy to install and built to withstand the rigors of demanding environments, the Renthal UltraLight Rear Chainwheel is a top-tier upgrade for riders aiming for peak performance.
Features:
- CNC machined from 7075 T6 aluminum for lightweight strength
- 66% lighter than steel sprockets, reducing overall vehicle weight
- Engineered for precise fitment, concentricity, and load dispersion
- s advanced surface treatments for wear resistance
- Optimized tooth profile for maximum power transfer and chain engagement
- Compatible with 76-tooth x 100 pitch bolt patterns
- Suitable for motocross, off-road racing, and powersports applications
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