Serpent 804199 21T Aluminum Pulley - Race-Ready Transmission Upgrade  [SER804199]

Upgrade Your 2-Speed Transmission Performance

The Serpent 804199 21T Aluminum Pulley is a precision machined component created to refine the efficiency of 2-speed transmission systems. Machined from high-quality aluminum, this pulley combines strength and lightness to improve shift feel and drivetrain consistency for club racers and track competitors.

Hard-Anodized Build for Track Durability

Built from hard-anodized aluminum, the 21T pulley resists wear from repeated engagement and maintains shape under load. Precision machining produces accurate tooth profiles and consistent running, helping to reduce slop and extend service intervals.

Designed to Improve Shift and Acceleration Response

Engineered for 2-speed RC car setups, this pulley supports efficient torque transfer during shifts and helps preserve overall drivetrain timing. Use it when refining gear ratios or tuning your car for quicker, more predictable throttle response.