This aftermarket 4.75mm alloy lower chassis is intended for use with HPI Savage 21 platforms and is supplied as a 1pr set with an additional titanium dog bone, screws and Delrin collars. It is targeted at experienced hobbyists seeking a durable lower plate that supports revised suspension geometry and driveline linkages while remaining compatible with the standard Savage 21 assembly.
The 4.75mm alloy plate provides enhanced stiffness versus typical stamped steel decks while maintaining weight appropriate for off-road setups. The included titanium dog bone (1pcs) is offered as a spare driveline component and is packaged with the required screws and Delrin collars so installers can replace worn parts or evaluate alternate configurations without sourcing separate hardware.
Installation notes: this part is provided as an aftermarket lower chassis replacement for Savage 21 models, it interfaces with existing suspension mounts and driveline components, and standard RC hand tools are sufficient for fitting; confirm clearance for steering and suspension travel during test assembly.
Recommended for builders who need a stiffer lower plate and a spare titanium dog bone for Savage 21 servicing or tuning; validate mounting points and clearance before completing the final install.