GMADE R1 Alloy Head Adjustable Main Shaft GM237SAN by GPM  [GM237SAN]

Adjustable main shaft for R1 chassis

This adjustable main shaft assembly is intended for use on the GMADE R1 ROCK BUGGY and is supplied as a multi-piece kit for tuning axle lengths and steering link geometry. The configuration uses a steel shaft core mated to an alloy-bodied head to strike a balance between rigidity and easy maintenance during low-speed rock crawling.

Primary mechanical features preserved from the original data include a universal swing-shaft cross-head to increase steering and crawl angle capability, plus a pinned shaft head designed to reduce the risk of head loosening during vertical travel. The set includes specified adjustable lengths and small protection rings to limit direct metal-to-body contact.

Install this set when fine-tuning wheelbase or steering geometry on trail builds, or when replacing worn cross shafts after heavy use. Regular inspection of the pin lock and silicone O-rings will help preserve alignment and prevent premature wear. Refer to manual GM54311 for factory adjustment ranges and step-by-step assembly guidance rather than using this text as an installation manual.

Targeted at trail and rock crawling rigs, this shaft set offers adjustable length options and locking details to help you tune geometry on the GMADE R1 ROCK BUGGY while keeping maintenance manageable.