Rear Sprocket 41T 6.43 BC 520 Chain

The Rear Sprocket 41T 6.43 BC 520 Chain is a precision-engineered drivetrain component designed for micro sprint racing and competitive go-kart applications. This 41-tooth sprocket delivers the gear ratio control essential for maximizing acceleration and top-end performance on short-track oval courses. Purpose-built for drivers who demand repeatability and reliability, this sprocket integrates seamlessly into 520-chain drive systems and serves as a critical tuning element for chassis optimization.

Manufactured from aluminum, this rear sprocket features a 6.43-inch bolt pattern that ensures secure mounting to standard micro sprint axle hubs. The 41-tooth configuration provides a balanced compromise between low-end power delivery and mid-range efficiency, making it ideal for tracks requiring consistent corner exit speed. Aluminum construction keeps rotating mass low without sacrificing durability, while the natural finish resists corrosion during storage and transportation. The 520-chain pitch specification guarantees compatibility with standard sprint-class drivetrain components and enables quick gear swaps during race weekend tuning sessions.

Micro sprint racers, vintage open-wheel competitors, and karting enthusiasts will find this sprocket essential for fine-tuning performance across varying track layouts and conditions. Installation requires removal of the existing sprocket and alignment with the axle's bolt pattern; most tracks support tool kit changes during pit stops. The lightweight 0.56-pound design minimizes unsprung weight, contributing to improved handling dynamics and reduced gyroscopic effect during high-speed cornering. Whether stepping up tooth count for technical courses or adjusting gearing strategy mid-season, this 41-tooth rear sprocket delivers the precision and durability expected in competitive micro sprint racing.