GMADE R1 Precision Adjustable Main Drive Shaft Set GM237SAA by GPM  [GM237SAA]

Precision adjustable front and rear shafts

This centre main drive shaft set is engineered for the GMADE R1 ROCK BUGGY chassis, model GM237SAA. The design pairs high-strength steel retention components with an aluminium 6061 T shaft body to optimise local rigidity while reducing rotational mass for improved drivetrain dynamics.

Adjustment windows are 122mm to 132mm at the front and 105mm to 115mm at the rear, enabling fine tuning of run-lengths to suit slipper preload, differential spacing and chassis setup without cutting fixed shafts. Fasteners are retained with a steel wire ring to maintain screw position under vibration loads.

From an upgrade perspective the aluminium shaft body reduces rotating inertia compared with full-steel options, improving transient response. The modular adjustable sections allow repeatable length settings and simplify service interventions during competition or track days.

Recommended for precision upgrades and race setups where adjustable, low-inertia drive components improve control; verify lengths with the vehicle static and inspect retention after initial runs.