Arrowmax AM-920041 AM Medius FWD Pully 21T Aium 7075  [AM-920041]

AM Medius FWD 21T pulley

The Arrowmax AM-920041 AM Medius FWD Pully 21T Aium 7075 is an RC-scale drive pulley intended for front-wheel drive (FWD) drivetrain setups. The product name identifies a 21-tooth pulley produced in Aium 7075, and it is designed to serve as a direct replacement or upgrade component where a 21T FWD pulley is required.

Installation is straightforward on compatible FWD pulley assemblies: remove the existing pulley following your chassis service procedures, check shaft and bearing condition, fit the AM Medius pulley onto the shaft, and secure with the original fixing hardware. Ensure alignment and bearing seating to avoid premature wear.

In tuning use, a 21T pulley changes rotational ratio and can be part of small incremental adjustments to acceleration and drivetrain responsiveness on FWD RC cars. Use this pulley in combination with measured changes elsewhere in the transmission to evaluate effects on handling and motor load.

Use the AM-920041 when a 21T FWD pulley is required for ratio tuning or part replacement, and verify shaft and bearing condition during installation to maintain drivetrain reliability.