600 Rear Sprocket 5.25in Bolt Circle 58T

The 600 Rear Sprocket featuring a 5.25-inch bolt circle and 58 teeth is a precision-engineered final drive component designed for high-performance mini bikes, go-karts, and compact displacement motorcycles. This sprocket serves as the critical load-bearing element in your powertrain, directly translating engine torque to rear wheel acceleration. Whether you're building a race-ready mini bike or upgrading stock gearing for better top-end performance, the 58-tooth configuration offers a balanced approach to both acceleration and cruising speed across a wide RPM band.

Ti22 PERFORMANCE engineered this rear sprocket with proven durability and precision tolerances that minimize runout and vibration. The 5.25-inch bolt circle diameter is a standard specification for 600cc-class engines and compatible mini bike platforms, ensuring direct bolt-on fitment without adapter plates. At just 1.4 pounds, the lightweight construction reduces unsprung mass and rotational inertia, allowing your drivetrain to respond more quickly to throttle inputs. The 58-tooth count delivers approximately 1.65:1 reduction with a standard 35-tooth countershaft sprocket—a ratio that emphasizes mid-range power and acceleration without sacrificing top speed on track or open roads.

Mechanics and builders favor this sprocket for both stock restoration and performance upgrades on trail bikes, pit bikes, and mini motorcycle platforms. Installation requires only removal of the rear wheel and chain, making replacement straightforward for users with basic wrenching skills. Verify your current countershaft sprocket tooth count and desired final drive ratio before purchasing; the 58T rear paired with a 35T countershaft delivers optimal performance for most 600cc applications. This sprocket works seamlessly with standard 520 or 530 motorcycle chains, depending on your frame and engine combination.