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The OS Giken R4C series quad-plate clutch for Toyota Supra 1JZ‑GTE is a direct-fit clutch assembly intended for R154 gearbox installations with a 26-spline GM input. As a multi-plate design, it increases friction surface area compared to single-plate setups, providing stronger, more consistent engagement for high-boost or heavily modified 1JZ applications. Installation matches the R154 transaxle interface.
OS Giken Toyota SUPRA 1JZGTE (R154 Gearbox) R4C Series Quad Plate w/ 26 GM Spline
