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Performance Clutch
Our integrated clutch and flywheel packages increase transmission efficiency and engine response. Our clutches and flywheels are built within strict tolerances and crafted using carefully selected...More Details »
Limited Slip Differential
The OS Super Lock LSD is the culmination of over four years of extensive research and development leading to a revolutionary LSD design. With the capacity to house an unprecedented number of...More Details »
Transmission
OS Giken Close Ratio Gear Kits are developed for those seeking improved drive train reliability and faster lap times. Gear ratios are carefully calculated for each vehicle application for the sole...More Details »
Engine
Our extensive racing experience matched with our technical manufacturing knowledge, has led to the development of a wide assortment of custom and limited parts to meet the rigorous demands of the...More Details »

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