Supplied as two pairs in red, these 40-series wheels are intended for use on Traxxas Revo and HPI Savage 21/25 platforms named in the title. The wide offset changes track width and suspension geometry, so treat these rims as a setup element to alter handling characteristics rather than as a bolt-on performance upgrade.
Workshop notes: verify wheel hex and bore dimensions against hub specifications before installation, torque wheel hardware to the chassis manufacturer's values, and perform alignment checks after fitting to correct toe and camber. Incorporate tyre selection and suspension adjustments into your setup workflow when using wide-offset wheels.
Use these wheels to change track width and achieve a distinct red appearance; follow alignment and setup procedures after fitment to maintain predictable handling.