AM Medius S3M 348mm White Belt Pair - Arrowmax AM-910038  [AM-910038]

Medius S3M 348mm belt set

The Arrowmax AM-910038 AM Medius belt set provides two S3M profile timing belts tailored to hobby-scale belt-driven RC drivetrains. The pack includes 2 pieces of 348mm length belts in white rubber, designed to engage standard S3M pulleys found in model transmissions.

Designed for timing and torque transfer, these belts keep multiple pulleys turning in step, allow tuning through tension adjustment, and the white colour helps with quick visual checks during setup. They are suitable wherever the S3M tooth form and 348mm loop length correspond to your pulley spacing.

To fit, loop the belt over matching S3M pulleys, set an initial tension, then run a low-speed check to verify tracking and load distribution before full-power runs. Small tension tweaks change drivetrain compliance and can influence handling, so adjust gradually and avoid sharp contact with pulley flanges.

As a maintenance or upgrade item, this two-belt Medius kit is a handy choice to preserve accurate timing in S3M-based RC drivetrains that call for a 348mm loop.