The Kyosho UM573 Main Chassis is an essential replacement or upgrade for Ultima SB models in the Legendary Series. It creates a firm foundation that enhances vehicle control and resists deformation under demanding use.
Designed with precision, the Kyosho UM573 Main Chassis helps maintain balance and consistent handling across varying track conditions. Its construction supports smoother cornering and steadier high speed behaviour.
Tailored for the Ultima SB, this main chassis installs cleanly and is compatible with typical build choices in the Legendary Series. Fit the UM573 when you want a reliable, long-lasting chassis upgrade that aids setup refinement.
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