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The Tilton OT-III Dual Disc Clutch is a very high-quality 5 1/2" diameter racing clutch. The aluminum cover is much lighter and stiffer than the stamped steel cover used on many competitors' racing clutches. A 5 1/2" clutch significantly reduces rotational inertia over a 7 1/4" clutch, improving acceleration and reducing crankshaft stress during gearchanges. Disc wear is more rapid than with a 7 1/4" clutch however, so you should be prepared to replace discs more frequently. This assembly includes the cover and pressure plate. Clutch disc and bolts are sold separately. Requires specially modified flywheel.
The Gray spring is a high-strength spring, recommended for cars producing up to 250 lb-ft of torque.
Racing clutches require high pedal force to actuate. External slave cylinder release mechanisms will not work with this clutch. The Gray spring should only be used on cars with a Hydraulic Release Bearing with a 38mm release bearing.