The hardened rubber on the mounting part of the power unit reduces unit vibrations. This product improves the throttle response and shift feeling. STI PERFORMANCE PARTS with which STI applied technologies developed and proven in motor sport will enrich your driving. Subaru STI Performance Parts are developed under the over-arching concept of 'total tuning'. This is defined as engineering by design to help improve the overall handling and performance. Subaru STI Performance Parts have been created in close co-operation with the development team of Subaru Tecnica International (STI). We tap into data from the fierce motorsport battle grounds and feed it directly back to the STI development group. With this data, we can develop the highest level of product for the most demanding of conditions.
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