Serpent SER804444 40T Magnesium Rear Differential Pulley - Race Tune  [SER804444]

Track-Oriented Upgrade for Rear Differential

The Serpent SER804444 40T rear differential pulley is a compact, lightweight upgrade aimed at improving drivetrain efficiency on 1/10 scale race cars. Machined from magnesium, it balances strength with low mass for better acceleration and response.

Magnesium Alloy Weight Savings

Magnesium offers a favourable strength-to-weight ratio for rotating components. This pulley trims rotating mass to help cars pick up speed faster and feel more responsive through mid-corner transitions.

40T Tooth Count and Torque Control

The 40T tooth configuration is selected to provide predictable torque transfer to the rear wheels, improving traction on corner exits. Accurate machining helps maintain smooth tooth engagement under load.

Compatibility and Simple Fitment

Built to suit a range of 1/10 scale differentials, the pulley installs with common tools and minimal setup. Confirm fitment against your existing gear train before final installation.