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Full face organic disc with sprung hub makes for a clutch that is still reasonably easy to drive in all street conditions, but paired with the heavy duty pressure plate this combo is able to hold more than twice the torque of the factory clutch.
ACT Stage One Heavy Duty Clutch Kit is rated for 310 ft lbs of torque (at the flywheel). We recommend this clutch for anyone adding a turbo or supercharger to their MX5. Comes complete with Pressure Plate, Clutch Disc, Throw Out Bearing, Pilot Bearing and Clutch Alignment Tool.
This clutch is compatible with the factory flywheel. However, consider adding a lightweight flywheel at the same time as this clutch. If you're ever going to do it, now is the time while the transmission is already out!
Photo from our trip to the ACT booth at SEMA 2016 with ND clutch on display: