{"product_id":"clutch-masters-850-series-street-twin-disc-clutch-kits-2006-2009-legacy-2004-2021-sti-1","title":"Clutch Masters 850 Series Street Twin Disc Clutch Kit 06-09 Legacy \/ 04-21 STI","description":"\u003ch3\u003eClutch Masters 850 Series Street Twin Disc Clutch Kit 06-09 Legacy \/ 04-21 STI | Twin Disc Design | High-Performance Clutch Kit\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe Clutch Masters 850 Series Street Twin Disc Clutch Kit is engineered for Subaru Legacy (2006-2009) and WRX STI (2004-2021) models, delivering exceptional clutch performance for high horsepower and torque applications. This kit features an 8.5-inch twin disc setup designed to provide superior clamping force and consistent pedal feel, making it ideal for enthusiasts who demand both street drivability and track-capable engagement. The Street version (TD8S) combines a sprung ceramic disc with a fiber tuff rigid disc, balancing smooth operation with enhanced holding capacity.\u003c\/p\u003e\n\u003cp\u003eBuilt with racing technology at its core, the FX850 clutch kit utilizes a billet aluminum pressure plate cover that is Type 3 hard anodized for durability and strength. This cover exhibits minimal flex—only .003 inches compared to up to .030 inches in cast or stamped units—ensuring that all clutch actuation force is efficiently applied to engage and disengage the clutch. The Quick Release (QR) system incorporated into the pressure plate uses spring-loaded bolts to reduce clutch noise and chatter by up to 50%, delivering a smoother and quieter driving experience without sacrificing performance.\u003c\/p\u003e\n\u003cp\u003eFor Subaru owners, this clutch kit means reliable power transfer and improved pedal feel, especially important when upgrading engine output or driving aggressively. The increased clamping force and larger friction surface area allow the clutch to handle elevated torque loads while maintaining manageable pedal effort, making it a practical upgrade for both spirited street driving and occasional track use.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis Clutch Masters 850 Series Street Twin Disc Clutch Kit is engineered for Subaru Legacy (06-09) and WRX STI (04-21) platforms and features an 8.5-inch twin disc design with a billet aluminum pressure plate cover. Constructed from high-strength billet aluminum and ceramic\/fiber friction materials, it delivers superior clamping force and consistent engagement for Subaru enthusiasts seeking enhanced durability and 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 Series Street Twin Disc Clutch Kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 15017-TD8S-XW\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 2018-2021 Subaru WRX STI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Billet Aluminum (Pressure Plate), Ceramic and Fiber Friction Discs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Type 3 Hard Anodized (Pressure Plate Cover)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e CNC Machined Billet Cover, Sprung Ceramic and Fiber Discs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Not Specified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClutch Diameter:\u003c\/strong\u003e 8.5 inches (216 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisc Configuration:\u003c\/strong\u003e Twin Disc (1 Sprung Ceramic + 1 Fiber Tuff Rigid Disc)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Plate Features:\u003c\/strong\u003e Quick Release (QR) System with Spring-Loaded Bolts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlywheel Options:\u003c\/strong\u003e Billet 6061-T6 Aluminum (SFI 1.2 Spec) or 1045 Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePedal Pressure:\u003c\/strong\u003e Approximately 50% increase over stock, balanced for street use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication Type:\u003c\/strong\u003e High-Performance Street and Track\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 high horsepower and torque with increased clamping force for reliable power transfer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Billet aluminum pressure plate cover reduces flex for consistent clutch engagement and longer service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePedal Feel:\u003c\/strong\u003e Designed to maintain reasonable pedal pressure despite increased clamping force, improving drivability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNoise Reduction:\u003c\/strong\u003e Quick Release system reduces clutch chatter and noise by up to 50%, enhancing street comfort.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Tailored specifically for Subaru Legacy (06-09) and WRX STI (04-21) models ensuring direct compatibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e High-grade materials and precision machining deliver a premium clutch experience for Subaru enthusiasts.\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 Series Street Twin Disc Clutch Kit\u003c\/li\u003e\n  \u003cli\u003e1× Billet Aluminum Pressure Plate with Quick Release System\u003c\/li\u003e\n  \u003cli\u003e1× Sprung Ceramic Clutch Disc\u003c\/li\u003e\n  \u003cli\u003e1× Fiber Tuff Rigid Clutch Disc\u003c\/li\u003e\n  \u003cli\u003e1× Flywheel (Aluminum or Steel, application-specific)\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 Series Street Twin Disc Clutch Kit requires moderate mechanical skill and access to transmission removal tools. Professional installation is recommended to ensure proper clutch alignment and torque specifications. No major modifications are necessary for compatible Subaru Legacy and WRX STI models, but verify exact year and trim fitment before purchase. Tuning is not required for clutch operation; however, this clutch is designed to support higher power levels, so engine tuning may be necessary if power upgrades are planned.\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 None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm fitment for your specific Subaru model year and trim\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":47131534098607,"sku":"15017-TD8S-XW","price":1753.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/M198789435.jpg?v=1782935201","url":"https:\/\/subimods.com\/products\/clutch-masters-850-series-street-twin-disc-clutch-kits-2006-2009-legacy-2004-2021-sti-1","provider":"Subimods.com","version":"1.0","type":"link"}