{"product_id":"clutch-masters-04-15-wrx-sti-2-5l-6-spd-t-fx850-twin-disc-street-clutch-kit-fw-sold-separately-15017-td8s-xw","title":"Clutch Masters 04-15 WRX STi 2.5L 6 spd T FX850 Twin Disc Street Clutch Kit (FW Sold Separately) - 15017-TD8S-XW","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eClutch Masters 850 Series Street Twin Disc Clutch Kit — Subaru STI \/ Legacy GT (15017-TD8S-XW)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eAn 8.5\" twin disc built for high-horsepower EJ builds that still get driven. Twin discs solve a specific problem: splitting the load across two friction surfaces gives you the clamping capacity a single disc can't reach, without the pedal effort and on-off engagement that comes from chasing the same number with clamp load alone.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eHistorically, high performance clutches have been a compromise\u003c\/strong\u003e — manufacturers raise clamp pressure to hold power and pedal effort goes to an uncomfortable point, especially in stop-and-go driving. The 850 Series is engineered against that. Pedal pressure comes in around 50 percent over stock, balanced for street use, and the Street configuration pairs a sprung ceramic disc with a fiber tuff rigid disc — smooth operation with real holding capacity.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eThe pressure plate is where the engineering lives.\u003c\/strong\u003e CNC machined from billet aluminum and Type 3 hard anodized, the cover flexes only .003\" under load compared to as much as .030\" in a cast or stamped unit. That means the force you're putting into the pedal actually goes into engaging and disengaging the clutch instead of being absorbed by a flexing cover. Quick Release system with spring-loaded bolts for serviceability.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 04-21 Subaru WRX STI, 07-09 Legacy GT Spec B and Outback XT — 2.5L turbo 6-speed. Pull type.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eFlywheel not included\u003c\/strong\u003e at this part number. Billet 6061-T6 aluminum (SFI 1.2 spec) and 1045 steel options are available separately — 15017-TD8S-SW is the same kit with the steel flywheel included if you'd rather order it as one piece.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eRelease bearing included.\u003c\/p\u003e","brand":"Street Strip Supply","offers":[{"title":"Default Title","offer_id":47213400686765,"sku":null,"price":1723.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/8105\/7197\/files\/15017-TD8S-XW.jpg?v=1787110639","url":"https:\/\/streetstripsupply.com\/products\/clutch-masters-04-15-wrx-sti-2-5l-6-spd-t-fx850-twin-disc-street-clutch-kit-fw-sold-separately-15017-td8s-xw","provider":"Street Strip Supply","version":"1.0","type":"link"}