LOSI PROMOTO-MX 32T hub sprocket and 68 roller chain by GPM MX6832S  [MX6832S]

32T Hub Sprocket and 68 Roller Chain

This is an RC-scale drivetrain replacement kit designed for LOSI PROMOTO-MX motorcycles, supplied by GPM as model MX6832S. The set pairs a 32T medium carbon steel hub sprocket with a 68 roller chain made from manganese steel to provide a durable, serviceable option for tuning gear ratios and replacing worn drivetrain parts on 1/4 scale dirt bike RTRs.

The components are intended for standard spur‑and‑chain layouts used on the PROMOTO-MX platform. Install the hub sprocket to the existing hub location and route the 68 chain over the sprocket and counter gear, checking alignment and chain run. Typical adjustments involve setting proper chain tension and ensuring the chain engages cleanly with every tooth profile; use appropriate RC tools and retainers for secure mounting.

Maintenance notes: inspect for wear after a few runs, keep the chain lightly lubricated with a product suitable for RC chains, and verify fastener torque regularly. This kit is presented as a like‑for‑like replacement and a tuning option, not a performance claim.

Use this GPM MX6832S kit when replacing worn sprockets or adjusting final drive ratio on LOSI PROMOTO-MX machines, and always confirm fitment against the listed compatible models before installation.