LOSI PROMOTO-MX 4x65mm Shock Shaft by GPM MXDP/PIN  [MXDP/PIN]

LOSI PROMOTO-MX shock shaft overview

This is an RC-scale shock shaft intended for use with the listed LOSI PROMOTO-MX motorcycle models. The shaft measures 4x65mm and is manufactured from 4140 medium carbon steel with a zinc-plated surface hardening treatment to improve wear resistance and dimensional stability during service. The component is supplied as a single pcs unit and is intended as a replacement or service spare for suspension maintenance and tuning.

The part functions as a structural element inside the shock assembly; replacing a bent or worn shock shaft restores alignment and reduces unwanted flex that affects damping behavior. It is compatible with shock bodies and internal hardware that accept a 4mm diameter, 65mm length shaft. When planning a repair or tune, confirm internal shock dimensions and clearance before installation to ensure correct fitment.