ATS Racing Stage 6. The only single disk clutch available for 500+whp. Designed by ATS Racing and built by Clutchmasters exclusively for ATS Racing. Several MR2 drivers have sold their twin disks to change to this clutch setup. Not noisy like twin disk setups, and much beter driveability. Pedal is FIRM. Swap cars are recommended to upgrade to the complete OEM turbo style pedal setup.