This 4 pcs axle shaft set is a direct replacement for the TRX4 Trail Crawler rear axle shafts, serving the drivetrain role of transferring motor output into gear rotation and wheel movement. The shafts use hardened #45 steel with an additional spring steel hardening process to raise surface hardness and wear resistance without changing the stock fitment.
Lengths are provided to match factory parts, with long shafts at 68.5mm and short shafts at 59.5mm, supplied as a 4 pcs set to replace both sides. The geometry and mounting points are intended to match original shafts so they install into the existing axle housing and work with the stock axle assembly.
In tune-up terms, these axles aim to increase longevity under sliding and low-speed crawling loads while keeping the drivetrain alignment and behaviour unchanged. Use them when stock shafts show wear or as a maintenance replacement to restore smooth gear engagement.
A practical stock-replacement axle set focused on restored drivetrain durability and direct fitment for TRX4 Trail Crawler setups.
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