Arrowmax AM-MRX5-H0251B 20T Pulley for Mugen MRX5 Track Use  [AM-MRX5-H0251B]

Lightweight 20T Pulley for MRX5 Chassis

The Arrowmax AM-MRX5-H0251B 20T pulley upgrades the Mugen MRX5 with a 7075 T6 aluminium construction that trims rotating weight while remaining robust. A hard coating reduces surface wear and the ventilation holes clear grime to preserve smooth operation.

Built for Reliable Belt Operation

Engineered to fit the MRX5 platform, this pulley helps keep belt tension stable and reduces chances of slippage caused by debris accumulation. The alloy choice balances stiffness with minimal added mass.

Practical Upgrade for Club and Track Racing

This 20T pulley is aimed at enthusiasts seeking improved throttle response and consistent behaviour across multiple heat sessions, with a focus on durability under repetitive use.