The 3Racing MR3-19/BU is a precision front upper designed to support aggressive setup tuning on the MR-03. Its compact form enables tight packaging while delivering predictable steering feedback under load.
Optimised for minimal flex, the MR3-19/BU improves front-end rigidity and repeatability. This allows finer adjustments to toe, caster and shock rates without masking the chassis response, aiding quicker setup iteration at the track.
For racing use, start with stock geometry and incrementally increase front shock damping or front roll stiffness to evaluate handling changes. The component integrates with standard MR-03 hardware and supports common competitive upgrades.