SUNSTAR Rear Sprocket Aluminum 39T for 520 Chain - High-Performance Motorcycle Part

The SUNSTAR Rear Sprocket Aluminum 39T for 520 chain is engineered for motorcycle enthusiasts seeking durability and performance. Crafted from aerospace-grade 7075-T6 aluminum, this sprocket offers a combination of high strength and lightweight design, ensuring optimal power transfer without adding unnecessary weight to your bike. The sprocket features computer-designed weight reduction holes that further decrease weight while maintaining structural integrity, making it ideal for racing and spirited riding.

Designed with an exclusive tooth-and-valley pattern, this sprocket provides 24% more chain contact area compared to standard designs. This increased contact improves power transfer efficiency to the rear wheel and distributes chain impact stress more evenly, resulting in enhanced lifespan and reliability. The larger contact patch helps prevent premature wear, ensuring consistent performance over extended use.

The sprocket is finished with a hard anodized coating, which enhances durability by providing a super tough, corrosion-resistant surface. This finish protects the aluminum from environmental factors and prolongs the sprocket’s service life, even under harsh riding conditions. Whether you are upgrading your stock part or building a high-performance motorcycle, the SUNSTAR 39T aluminum rear sprocket offers a reliable, high-quality solution for demanding riders.

Features:

• Made from aerospace-grade 7075-T6 aluminum for high strength and lightweight performance

• Computer-designed weight reduction holes for decreased weight without compromise

• Exclusive tooth-and-valley design delivers 24% more chain contact area for superior power transfer

• Enhanced stress distribution to improve sprocket longevity and durability

• Hard anodized coating provides a super durable, corrosion-resistant finish