This GPM replacement is an RC-scale alloy suspension chassis designed for use with the HPI Savage 21 platform, supplied with an additional titanium dog bone, screws and Delrin collars as a 1pr set. The component targets hobbyists who need a robust lower chassis piece to support modified suspension geometry and drivetrain linkage while remaining compatible with standard Savage 21 layout.
The 4.75mm alloy plate lends increased stiffness compared with typical stamped steels while keeping weight appropriate for typical off-road setups. The included titanium dog bone (1pcs) is provided as an extra driveline pin and is accompanied by the fasteners and Delrin collars required for mounting so installers can replace worn parts or trial alternate setup options without sourcing additional small hardware.
Installation notes: this part is an RC accessory intended to replace or upgrade the factory lower chassis on Savage 21 models, it interfaces with existing suspension mounts and driveline components, and routine fitting requires common RC hand tools and confirmation of clearance for steering and suspension travel.
Use this GPM chassis piece when you need a stiffer lower plate and a spare titanium dog bone for Savage 21 maintenance or incremental tuning; verify fit against your existing shock and driveline setup before final assembly.
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