Radius Tooth Belt - 30.6 x 1/2 99 Teeth

The Moroso Radius Tooth Belt – 30.6 x 1/2, 99 Teeth is a precision HTD (High Torque Drive) belt engineered for high-performance engine applications where reliable power transmission is non-negotiable. With 99 teeth across a 30.6-inch circumference and an 8 mm pitch, this belt delivers consistent grip and minimal slippage under demanding conditions. The 1/2-inch width provides optimal load distribution across smaller to mid-sized accessory drive systems.

HTD belt technology excels where traditional V-belts fall short. The trapezoidal tooth profile engages precisely with pulley grooves, eliminating creep and reducing heat buildup during sustained operation. This 30.6-inch Moroso belt maintains tension stability across temperature ranges typical of engine bays, making it suitable for supercharger drives, alternator upgrades, and custom serpentine configurations. The rubber compound resists oil spray and UV exposure, critical factors in underhood longevity. Replacement interval depends on drive intensity, but proper alignment and tension—checked during installation—maximize service life.

Technicians and engine builders select this belt for applications where stock serpentine systems require upgrading or where aftermarket supercharger and blower packages demand a proven OEM-quality component. Weighing just 0.19 lbs, it's light enough for high-rpm builds where inertia matters, yet robust enough to handle the eccentric loads of accessory drive systems. Verify pulley compatibility—HTD pitch and tooth count must match your system exactly—before ordering.