Each 10.4" one- or two-disc clutch and flywheel kit incorporate engineering know-how derived from the rich Quarter Master® racing heritage. However, they can also easily be used for street driving. The two-disc kits are designed for up to 1400 horsepower and 1000 ft./lbs. of torque. The single-disc options can hold up to 700 horsepower and 500 ft./lbs. of torque.

Quarter Master®, the industry leader in driveline technology, has continued its winning ways with Optimum-SR™ 10.4" Two-Disc LS Clutches. They have achieved standout results with a Camaro in the GRAND-AM Continental Tire Sports Car Challenge Series, including a first and second-place sweep at the Indianapolis Motor Speedway. Now, with lessons learned from racing, and with the data from extensive drivability testing, Optimum-SR™ LS Clutches are available for street use.

Features a spring designed to require only a 10 percent increase in pedal effort over stock, with stock-type modulation control. The clutches are capable of handling 1400 horsepower and 1000 ft.-lbs. of torque. Features a sprung hub, marcel-type discs with organic rag-type friction for smooth engagement. A vented floater plate and grooved friction surfaces provide better cooling as well. Featuring aircraft-grade bolts and hardware with an all-billet construction, each clutch is completely rebuildable and can be used with OE hydraulic bearing systems or Quarter Master® Tri-Lite II Hydraulic Release Bearings.

1400 HP & 1000 Ft/Lb-Capable

Near Stock Pedal Feel/Power Modulation

CNC Billet Design Is Easily Rebuildable

Lighter Than Stock Clutch

Optimum-SR 10.4" Clutch Kits are true racing components that feature factory driving characteristics -- allowing them to function as stock replacements.