{"product_id":"clutch-masters-850-pro-series-twin-disc-clutch-kits-and-flywheel-2006-2009-legacy-2004-2021-sti-1","title":"Clutch Masters 850 PRO Series Twin Disc Clutch Kit \u0026 Flywheel 06-09 Legacy \/ 04-21 STI","description":"\u003ch3\u003eClutch Masters 850 PRO Series Twin Disc Clutch Kit \u0026amp; Flywheel 06-09 Legacy \/ 04-21 STI | 8.5\" Twin Disc | High-Performance Clutch Kit\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe Clutch Masters 850 PRO Series Twin Disc Clutch Kit \u0026amp; Flywheel is a high-performance conversion kit designed specifically for the 2006-2009 Subaru Legacy and 2004-2021 Subaru WRX STI platforms. This kit replaces the OEM flywheel and clutch assembly with a purpose-built system engineered to handle extreme torque and aggressive driving conditions. It is ideal for enthusiasts seeking a durable, race-ready clutch solution that delivers consistent engagement and improved drivetrain reliability.\u003c\/p\u003e\n\u003cp\u003eBuilt as the next evolution of Clutch Masters’ multi-disc clutch technology, the 850 PRO Series features a completely redesigned 8.5-inch clutch system. The kit incorporates a 12-post heat-treated 4140 steel pressure plate, a next-generation driven hub, and ceramic friction discs that provide superior strength and heat resistance. This design addresses common weaknesses found in traditional setups by eliminating flex and wear under high-stress conditions, making it a standout choice for both street and track use.\u003c\/p\u003e\n\u003cp\u003eReal-world benefits for Subaru owners include enhanced torque capacity rated at an estimated 800 ft-lbs, reduced spline wear thanks to the precision-driven hub, and the option to choose between lightweight 6061-T6 billet aluminum or ultra-strong 4140 billet steel flywheels. This clutch system is fully serviceable with available rebuild kits, ensuring long-term reliability and performance for demanding Subaru builds.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis Clutch Masters 850 PRO Series Twin Disc Clutch Kit \u0026amp; Flywheel is engineered for the 2018-2021 Subaru WRX STI and 2006-2009 Legacy, featuring an 8.5-inch twin ceramic disc setup. Constructed from heat-treated 4140 steel and billet aluminum or steel flywheels, it delivers exceptional torque capacity and durability for Subaru enthusiasts seeking race-grade clutch performance.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Clutch Masters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e 850 PRO Series Twin Disc Clutch Kit \u0026amp; Flywheel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 15017PTD8RSHV\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 2018-2021 Subaru WRX STI, 2006-2009 Subaru Legacy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Heat-treated 4140 steel, 6061-T6 billet aluminum or 4140 billet steel flywheel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Type 3 hard coat anodized (aluminum flywheel), black oxide treated (steel flywheel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e 12-post pressure plate, ceramic friction discs, billet flywheel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTorque Capacity:\u003c\/strong\u003e Estimated 800 ft-lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngagement:\u003c\/strong\u003e Available in Sprung Race (1 sprung ceramic disc + 1 ceramic disc) and Rigid Race (2 ceramic discs with rigid hub)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlywheel Options:\u003c\/strong\u003e 6061-T6 billet aluminum or 4140 billet steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eServiceability:\u003c\/strong\u003e Fully serviceable with rebuild kits available\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Handles extreme torque loads up to 800 ft-lbs, ideal for high horsepower Subaru builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Heat-treated 4140 steel pressure plate and ceramic discs resist wear and heat fade\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Designed exclusively for Clutch Masters flywheel, ensuring precise compatibility and installation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngagement:\u003c\/strong\u003e Next-generation driven hub reduces spline wear and provides consistent clutch feel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustability:\u003c\/strong\u003e Choice between sprung and rigid disc configurations to match driving style and application\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e Proudly manufactured in the USA with race team input and rigorous quality control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Clutch Masters 850 PRO Series Twin Disc Clutch Assembly\u003c\/li\u003e\n  \u003cli\u003e1× Clutch Masters Billet Flywheel (aluminum or steel, depending on selection)\u003c\/li\u003e\n  \u003cli\u003eMounting hardware for clutch and flywheel installation\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eInstallation of the Clutch Masters 850 PRO Series Twin Disc Clutch Kit \u0026amp; Flywheel requires professional expertise due to the precision alignment and torque specifications involved. Special tools such as a clutch alignment tool and torque wrench are recommended. This kit is a conversion that will not work with the OEM flywheel and must be used exclusively with the Clutch Masters flywheel included. Tuning adjustments may be necessary to optimize drivability and engagement characteristics after installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e Conversion kit; OEM flywheel incompatible\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm fitment for your specific year and trim level of Subaru WRX STI or Legacy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eShop with confidence at Subimods—your Subaru parts specialists.\u003c\/p\u003e","brand":"Clutch Masters","offers":[{"title":"Default Title","offer_id":47131534033071,"sku":"15017PTD8RSHV","price":2380.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/M198794412.jpg?v=1782935201","url":"https:\/\/subimods.com\/products\/clutch-masters-850-pro-series-twin-disc-clutch-kits-and-flywheel-2006-2009-legacy-2004-2021-sti-1","provider":"Subimods.com","version":"1.0","type":"link"}