Owners of the MR-03 chassis can use the Kyosho MZW416B-02 adjustable caster arm kit to refine front-end behavior when running inner tube shocks. The kit helps you tune steering characteristics to match circuit demands.
This kit contains three pairs of caster arms in 1, 2 and 3 degree increments, enabling a simple stepwise approach to handling changes. Try each setting to see how steering sharpness and balance react.
Designed to align with MR-03 mounting points, the arms install cleanly for reliable repeated swaps. That allows racers and hobbyists to compare setups without altering other chassis geometry.
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