HPI Savage 21 Main Shaft Titanium Dog Bone (112mm) by GPM TSAV1037DL  [TSAV1037DL]

Main shaft titanium dog bone

This 112mm titanium dog bone is an aftermarket replacement part made for HPI Savage 21 main shaft applications, supplied as 1pc. It is intended for RC-scale drivetrain use only and fits the specified Savage submodels listed below. The component replaces the standard steel or alloy dog bone to provide a corrosion-resistant connection between the main shaft and outdrives while keeping installation straightforward.

Installation notes: remove the rear driveline assembly per your chassis manual, slide the dog bone into the outdrive and main cup, and secure any retaining pins or clips used on your unit. No modifications to the main shaft are required when used with the stated compatible models. During reassembly verify free rotation and correct centring before final torque on related fasteners.

Tuning role: the titanium dog bone maintains drivetrain alignment under load and can reduce the risk of bending that affects gear mesh and power transfer. Use it as part of routine maintenance to replace worn dog bones or when changing diff or outdrive geometry during setup adjustments.