HPI Savage 21 Aftermarket Titanium Front and Rear Swing Shafts TSAV12100 by GPM  [TSAV12100]

Titanium upgrade shafts for Savage 21 driveline

These titanium front and rear universal swing shafts are produced for the HPI Savage 21 chassis and carry the part reference GPM TSAV12100. The kit includes both shafts plus washers to help set correct axial spacing compared with stock steel components.

The shafts transmit drive from the gearbox outputs into the wheel hubs while accommodating steering and suspension movement. Titanium lowers rotating mass relative to steel while retaining good spline strength, and the washers are provided to help with endplay and alignment during fitment.

Installation guidance: remove the original swing shafts per your Savage 21 service procedure, move across any necessary bearings or retainers, insert the titanium shafts into the front and rear housings, and fine tune axial clearance with the washers before final torque. Rotate the drivetrain by hand to confirm smooth engagement.

Use in setup: this is a component upgrade aimed at improving longevity and trimming rotating mass where owners are refreshing worn drivetrain parts or seeking a slightly crisper feel in response.

A straightforward direct-fit alternative for Savage 21 users who want to replace worn shafts or marginally reduce rotating mass; always validate fitment and clearance after installing.