{"product_id":"mlr6405507md-gm-ls-6-bolt-twin-disc-clutch","title":"McLeod Racing RST HD Twin w\/ Steel Flywheel - 97-15 GM LS 6 Bolt Crank - 1-1\/8 x 26 Spline - 168T","description":"\u003ch4\u003eTwin Disc Holding Power for Your GM LS Build\u003c\/h4\u003e\n\u003cp\u003eThe McLeod RST HD Twin Disc Clutch Kit gives GM LS platform owners a serious upgrade path between McLeod's street focused RST line and the track ready RXT twin disc systems. Part number MLR6405507MD pairs organic and ceramic friction surfaces on opposing discs, giving 6-bolt LS applications strong holding power while keeping the pedal feel manageable for daily street use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHybrid friction combination with full-face organic on one disc and segmented ceramic on the other\u003c\/li\u003e\n\u003cli\u003eRated to support up to 950 horsepower in a twin-disc configuration\u003c\/li\u003e\n\u003cli\u003eIncludes a billet steel flywheel with 168-tooth ring gear for internal balance applications\u003c\/li\u003e\n\u003cli\u003eBuilt for a 1-1\/8 inch, 26-spline transmission input shaft, MLR6405507MD is a direct fit for 6-bolt LS cranks\u003c\/li\u003e\n\u003cli\u003eDiaphragm-style pressure plate keeps clutch pedal effort reasonable for street driving\u003c\/li\u003e\n\u003cli\u003eIncludes installation hardware and an alignment tool for a complete swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment Table\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997-2015\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eGM LS Applications (6-Bolt Crank)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997-2015\u003c\/td\u003e\n\u003ctd\u003eCadillac\u003c\/td\u003e\n\u003ctd\u003eGM LS Applications (6-Bolt Crank)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eMLR6405507MD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMcLeod Racing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower Rating\u003c\/td\u003e\n\u003ctd\u003e950 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc Diameter\u003c\/td\u003e\n\u003ctd\u003e9.687 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpline\u003c\/td\u003e\n\u003ctd\u003e1-1\/8 inch, 26 spline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlywheel Material\u003c\/td\u003e\n\u003ctd\u003eBillet Steel, 168-Tooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc Material\u003c\/td\u003e\n\u003ctd\u003eOrganic \/ Ceramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eNot listed by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMcLeod RST HD twin disc clutch assembly\u003c\/li\u003e\n\u003cli\u003eBillet steel flywheel, 168-tooth ring gear\u003c\/li\u003e\n\u003cli\u003eInstallation hardware\u003c\/li\u003e\n\u003cli\u003eAlignment tool\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAbout McLeod Racing\u003c\/h4\u003e\n\u003cp\u003eMcLeod Racing has manufactured clutch and driveline components for street and race applications for decades, developing hybrid friction technology that balances holding power with everyday drivability. The RST HD line sits between their street oriented RST kits and the higher capacity RXT systems, aimed at high-horsepower LS builds that still see regular street use.\u003c\/p\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the MLR6405507MD?\u003c\/strong\u003e\n\u003cp\u003eThe MLR6405507MD is a McLeod Racing RST HD twin disc clutch kit built for 1997 to 2015 GM LS engines with a 6-bolt crankshaft. It includes a billet steel flywheel and is rated to support up to 950 horsepower.\u003c\/p\u003e\n\u003cstrong\u003eDoes this kit include a flywheel?\u003c\/strong\u003e\n\u003cp\u003eYes, the MLR6405507MD comes with a dedicated billet steel flywheel featuring a 168-tooth ring gear for internal balance LS applications.\u003c\/p\u003e\n\u003cstrong\u003eWhat horsepower can this clutch handle?\u003c\/strong\u003e\n\u003cp\u003eThis twin disc clutch kit is rated to support up to 950 horsepower thanks to its hybrid organic and ceramic friction disc combination.\u003c\/p\u003e\n\u003cstrong\u003eIs this clutch good for daily driving?\u003c\/strong\u003e\n\u003cp\u003eYes, the RST HD line is designed to retain street-friendly pedal engagement through its full-face organic disc side while the ceramic side adds holding power for aggressive use.\u003c\/p\u003e\n\u003cstrong\u003eWhat spline and crank pattern does this clutch use?\u003c\/strong\u003e\n\u003cp\u003eThe MLR6405507MD is built for a 1-1\/8 inch, 26-spline input shaft and a 6-bolt LS crankshaft with a 168-tooth ring gear.\u003c\/p\u003e\n\u003cstrong\u003eAre the throwout bearing and pilot bushing included?\u003c\/strong\u003e\n\u003cp\u003eNo, the throwout bearing and pilot bushing are not included with this kit and need to be sourced separately based on your specific transmission.\u003c\/p\u003e\n\u003cstrong\u003eDoes this clutch require anything extra for Cadillac CTS-V applications?\u003c\/strong\u003e\n\u003cp\u003eYes, 2004 to 2007 Cadillac CTS-V applications require a McLeod slave cylinder spacer, which is sold separately from this clutch kit.\u003c\/p\u003e\n\u003cstrong\u003eWhat is the difference between the RST HD and McLeod's standard RST clutch?\u003c\/strong\u003e\n\u003cp\u003eThe RST HD uses a segmented ceramic disc on one side for additional holding power, while the standard RST relies on dual organic discs, making the HD version better suited to higher horsepower builds.\u003c\/p\u003e\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eSupport the vehicle and transmission safely, then remove the transmission per factory service procedures.\u003c\/li\u003e\n\u003cli\u003eRemove the factory flywheel and clutch assembly from the LS crankshaft.\u003c\/li\u003e\n\u003cli\u003eInstall the included billet steel flywheel and torque the bolts to specification.\u003c\/li\u003e\n\u003cli\u003eMount the twin disc clutch assembly, aligning both friction discs with the supplied alignment tool.\u003c\/li\u003e\n\u003cli\u003eInstall the pressure plate and torque the cover bolts evenly in a star pattern.\u003c\/li\u003e\n\u003cli\u003eInstall a compatible throwout bearing and pilot bushing, purchased separately if needed.\u003c\/li\u003e\n\u003cli\u003eReinstall the transmission and reconnect the clutch linkage or hydraulic system.\u003c\/li\u003e\n\u003cli\u003eComplete a proper break-in period before subjecting the clutch to full load.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eProp 65 Warning\u003c\/h4\u003e\n\u003cp\u003eWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.\u003c\/p\u003e","brand":"McLeod Racing","offers":[{"title":"Default Title","offer_id":46242856861775,"sku":"MLR6405507MD","price":1388.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/mlr6405507md-gm-ls-1997-2015-6-bolt-twin-disc-clutch-1.webp?v=1785172425","url":"https:\/\/www.blackopsautoworks.com\/products\/mlr6405507md-gm-ls-6-bolt-twin-disc-clutch","provider":"Black Ops Auto Works","version":"1.0","type":"link"}