Quarter Master® Optimum-SR™ 10.4" Two-Disc LS Clutches

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Lake Zurich, IL – Quarter Master® brings race-winning clutch technology to the street with new Optimum-SR™ 10.4" Two-Disc LS Clutches. These clutches deliver a nearly stock pedal feel and are capable of handling 1400 horsepower and 1000 ft./lbs. of torque.

Quarter Master®, the industry leader in driveline technology, has continued its winning ways this season with brand-new Optimum-SR™ 10.4" Two-Disc LS Clutches. They have achieved standout results with the 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. They are currently offered for the C5 and C6 Corvette, Gen V Camaro, Pontiac G8 and 2010 and newer Cadillac CTS-V, with more applications to come.

Both the race and street versions feature 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. The street version features 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. Quarter Master® Optimum-SR™ 10.4" Two-Disc LS Clutches are in stock and ready to ship.