The Tamiya 49442 - M03-R Aluminum Rear Upright (Blue) for M-Chassis is a useful swap for anyone wanting firmer rear geometry on M03 and M04 chassis. Manufactured from aluminium for added rigidity, the blue upright introduces a 1.5-degree toe-in that helps keep the rear end tracking cleanly through corners.
Made to match standard M-Chassis mounting points, this part helps maintain correct alignment under load and supports consistent steering behaviour. The moderate toe-in improves mid-corner confidence without requiring elaborate setup changes.
A sensible upgrade for M-Chassis fans seeking tougher components and steadier handling on both track and practice sessions.
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