3Racing MRX4-12/TI 6mm 7075 Chassis Plate for Mugen Seiki MRX4/MRX4-R  [MRX4-12/TI]

Fit a tougher 7075 chassis to your Mugen Seiki

For those focused on consistent lap times, the Mugen Seiki MRX4/MRX4-R 6mm 7075 aluminum main chassis by 3Racing MRX4-12/TI delivers a stiffer platform. It provides a solid base for suspension and setup adjustments.

Designed for competitive use

Fabricated from 7075 alloy, this main chassis offers strength suited to regular track use. The 6mm thickness reduces unwanted flex so changes to dampers and camber behave more predictably.

Made for MRX4 series

This chassis is intended specifically for the Mugen Seiki MRX4 and MRX4-R, providing accurate alignment and easy replacement of the stock plate. Installation is straightforward for experienced tuners and weekend racers alike.

Material benefits explained

7075 aluminum is selected for its high strength relative to weight, providing increased rigidity while keeping the overall mass reasonable. That balance helps preserve nimble handling without sacrificing structural integrity.