GMADE R1 Steel Adjustable Main Shaft GM237SAN by GPM  [GM237SAN]

R1 main shaft adjustable assembly

This adjustable main shaft set is intended for the GMADE R1 ROCK BUGGY and comes as a multi-piece kit to help with axle and steering link tuning. The core shaft is steel with an alloy-bodied head to provide a practical balance of stiffness and maintainability for slow crawl use.

Core mechanical characteristics include a universal swing-shaft cross-head to boost steering and crawling articulation, and a pinned shaft head to lower the chance of the head loosening under vertical load. The kit contains measured adjustable lengths and small protection rings designed to reduce direct metal-to-body contact.

Use the kit when adjusting wheelbase or steering geometry on trail setups, or when replacing worn cross shafts after demanding sessions. Routine inspection of the pin lock and silicone O-rings will help keep alignment and prolong component life. For exact assembly and adjustment specifications consult manual GM54311 rather than relying on this description.

A functional upgrade for off-road rock crawling, this shaft set delivers length adjustability and locking details to support geometry tuning on the GMADE R1 ROCK BUGGY while remaining service-friendly.