This main chassis is produced for the RO series and uses a graphite-mixed resin to raise structural stiffness compared with the standard chassis while retaining the same external shape and mounting layout.
The unchanged geometry makes this part a direct replacement for compatible RO-series frames, so it fits existing screw points and accessories without modification. The additional stiffness moves chassis behavior toward quicker response and crisper steering feedback, which is advantageous on high-grip surfaces such as carpet.
This component is a tuning item rather than a new mechanical system: expect altered handling balance as flex characteristics change, and review suspension preload and anti-roll settings after installation to restore the balance between traction and responsiveness.
For builders using RO-series cars on high-grip tracks, this graphite-mixed main chassis delivers a clearer, firmer response while keeping stock fitment; perform a setup check after fitting to fine-tune handling.
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