HPI Savage 21 Precision Titanium Dog Bone TSAV1037D by GPM  [TSAV1037D]

Precision titanium dog bone for HPI Savage 21

This aftermarket dog bone is engineered for the HPI Savage 21 main-shaft drivetrain and provides the direct link between gearbox output and wheel hubs. CNC-friendly titanium alloy construction delivers higher stiffness and superior corrosion resistance compared with standard steel or plated components. The package contains one pair intended for direct replacement when shaft interface and cup dimensions match.

Installation notes: confirm whether your Savage 21 requires the S (76.6mm) or L (83mm) length prior to installation, measure the centre-to-centre distance on the main shaft, and inspect cups and cross-pins for wear and dimensional tolerance. Fit with correct retaining hardware and apply controlled torque to hex screws to avoid preload-induced binding. Verify free rotation throughout the suspension and wheel travel envelope after assembly.

Tuning and service role: a titanium dog bone reduces drivetrain compliance under load and resists surface abrasion in heavy off-road use, preserving more consistent torque transfer. This item is intended as an upgrade for chassis durability and driveline refinement rather than a standalone performance amplifier.

Use the GPM TSAV1037D for replacing worn main-shaft links or when specifying titanium for extended service life and reduced interface wear; ensure correct length and fit before final torqueing.