A brand-new design for improved precision and reliability: • Extended shaft length, ensuring runout less than 0.02mm from factory. • Significantly improved concentricity of the upper clutch bearing, delivering smoother and more stable transmission. • Starter coupling no longer sits inside the bearing, reducing the chance of clutch loosening. • Reduced taper angle on the engine shaft sleeve — reliable engagement without excessive tightening, preventing starter slippage. • Recommended tightening torque: 18–20 Nm for secure and reliable locking.
👉 Engineered to keep your Nitro system precise and durable at high RPM.