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

Aftermarket 112mm titanium dog bone

This 112mm titanium dog bone is supplied as a single aftermarket replacement for HPI Savage 21 main shaft installations and is intended for RC drivetrain use only. It fits the Savage variants listed in the compatibility box and replaces the original steel or alloy dog bone to provide improved corrosion resistance and reliable connection to outdrives.

Fitment guidance: remove the rear driveline per your vehicle manual, insert the dog bone into the outdrive and main cup, then secure any retaining clips or pins used by your unit. The listed compatible models require no alterations to the main shaft for correct installation. Verify free rotation and central alignment before tightening related fasteners to final torque.

Tuning and maintenance: titanium helps preserve drivetrain geometry under load and can reduce bending that disrupts gear mesh. Use this part during routine maintenance or when you change differential or outdrive geometry during setup work.