{"product_id":"act-xtreme-performance-street-sprung-clutch-kit-with-monoloc-2004-2021-subaru-wrx-sti-and-legacy-gt-spec-b-sb10-xtss","title":"ACT Xtreme\/Performance Street Sprung Clutch Kit with Monoloc, 2004-2021 Subaru WRX STI \u0026 Legacy GT spec.B | SB10-XTSS","description":"\u003cp\u003eThe ACT SB10-XTSS kit pairs a Xtreme pressure plate with a Performance Street organic disc for demanding street and track driving on the WRX STI platform. ACT's Xtreme pressure plate uses an exclusive diaphragm design to increase clamp load, reduce deflection, and extend clutch life for the most demanding drivers. All diaphragms go through a four-stage heat-treating process, and precision cover stampings add rigidity and consistency. Xtreme pressure plates increase clamp load by 50 to 120 percent over stock. ACT's Performance Street discs are the brand's most popular disc, using premium organic friction material with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. A reduced marcel provides faster shift action to complement the pressure plate, with quiet operation and increased strength and reliability. The kit also includes ACT's Monoloc, a one-piece, direct replacement for the standard two-piece wedge collar and wire ring used in pull-type clutches. Monoloc's segmented retaining ring tension is carefully calculated and tested to provide uniform loading on the bearing and pressure plate for consistent alignment, regardless of driver input or vehicle modifications, and its hardened chrome-moly steel construction is built to last.\u003c\/p\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/9aea4a88ee91500c37a766fcb5c28a21.PDF\"\u003eWarranty\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/d856e10aab4787d29e6c192d62ac3288.PDF\"\u003eInstallation Instructions\u003c\/a\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePressure Plate: Xtreme pressure plate, four-stage heat-treated diaphragm\u003c\/li\u003e\n\u003cli\u003eDisc: Performance Street organic disc\u003c\/li\u003e\n\u003cli\u003eClamp Load: 50-120% increase over stock\u003c\/li\u003e\n\u003cli\u003eRetaining Ring: ACT Monoloc, one-piece hardened chrome-moly (included)\u003c\/li\u003e\n\u003cli\u003ePart Number: SB10-XTSS\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2004 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2005 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2006 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2007 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2008 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2009 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2010 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2011 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2012 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2013 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2014 Subaru Impreza WRX STI\u003c\/li\u003e\n\u003cli\u003e2007 Subaru Impreza WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2011 Subaru Impreza WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2012 Subaru Impreza WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2013 Subaru Impreza WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2014 Subaru Impreza WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2010 Subaru Impreza WRX STI Special Edition\u003c\/li\u003e\n\u003cli\u003e2007 Subaru Legacy GT spec.B\u003c\/li\u003e\n\u003cli\u003e2008 Subaru Legacy GT spec.B\u003c\/li\u003e\n\u003cli\u003e2009 Subaru Legacy GT spec.B\u003c\/li\u003e\n\u003cli\u003e2015 Subaru WRX STI Base\u003c\/li\u003e\n\u003cli\u003e2016 Subaru WRX STI Base\u003c\/li\u003e\n\u003cli\u003e2017 Subaru WRX STI Base\u003c\/li\u003e\n\u003cli\u003e2018 Subaru WRX STI Base\u003c\/li\u003e\n\u003cli\u003e2019 Subaru WRX STI Base\u003c\/li\u003e\n\u003cli\u003e2020 Subaru WRX STI Base\u003c\/li\u003e\n\u003cli\u003e2021 Subaru WRX STI Base\u003c\/li\u003e\n\u003cli\u003e2015 Subaru WRX STI Launch Edition\u003c\/li\u003e\n\u003cli\u003e2015 Subaru WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2016 Subaru WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2017 Subaru WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2018 Subaru WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2019 Subaru WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2020 Subaru WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2021 Subaru WRX STI Limited\u003c\/li\u003e\n\u003cli\u003e2019 Subaru WRX STI S209\u003c\/li\u003e\n\u003cli\u003e2016 Subaru WRX STI Series.HyperBlue\u003c\/li\u003e\n\u003cli\u003e2018 Subaru WRX STI Type RA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWarning: This product can expose you to chemicals including carbon black, glass wool fibers, or silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat does the SB10-XTSS kit include?\u003c\/h5\u003e\u003cp\u003eThe SB10-XTSS kit includes an ACT Xtreme pressure plate, a Performance Street organic disc, and ACT's Monoloc retaining ring.\u003c\/p\u003e\u003ch5\u003eWhat does ACT's Monoloc do?\u003c\/h5\u003e\u003cp\u003eMonoloc is a one-piece, direct replacement for the standard two-piece wedge collar and wire ring used in pull-type clutches. Its hardened chrome-moly construction provides uniform loading on the bearing and pressure plate for consistent alignment, regardless of driver input or vehicle modifications.\u003c\/p\u003e\u003ch5\u003eIs this kit suited for street or race use?\u003c\/h5\u003e\u003cp\u003eYes, it pairs an Xtreme pressure plate with a Performance Street organic disc for demanding street and track driving.\u003c\/p\u003e\u003ch5\u003eDoes this kit fit the WRX STI and the Legacy GT spec.B?\u003c\/h5\u003e\u003cp\u003eYes, this kit covers the 2004-2014 Subaru Impreza WRX STI, 2015-2021 WRX STI, and 2007-2009 Legacy GT spec.B. See the full Vehicle Applications list above to confirm the exact year and trim.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the SB10-XTSS kit include?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The SB10-XTSS kit includes an ACT Xtreme pressure plate, a Performance Street organic disc, and ACT's Monoloc retaining ring.\"}}, {\"@type\": \"Question\", \"name\": \"What does ACT's Monoloc do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Monoloc is a one-piece, direct replacement for the standard two-piece wedge collar and wire ring used in pull-type clutches. Its hardened chrome-moly construction provides uniform loading on the bearing and pressure plate for consistent alignment, regardless of driver input or vehicle modifications.\"}}, {\"@type\": \"Question\", \"name\": \"Is this kit suited for street or race use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, it pairs an Xtreme pressure plate with a Performance Street organic disc for demanding street and track driving.\"}}, {\"@type\": \"Question\", \"name\": \"Does this kit fit the WRX STI and the Legacy GT spec.B?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, this kit covers the 2004-2014 Subaru Impreza WRX STI, 2015-2021 WRX STI, and 2007-2009 Legacy GT spec.B. See the full Vehicle Applications list above to confirm the exact year and trim.\"}}]}\u003c\/script\u003e","brand":"ACT","offers":[{"title":"Default Title","offer_id":41692053733424,"sku":"ACTSB10-XTSS","price":875.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/0e8f74788b6cacc10742c6636a55aa03L.jpg?v=1729305140","url":"https:\/\/berryperformancesales.com\/products\/act-xtreme-performance-street-sprung-clutch-kit-with-monoloc-2004-2021-subaru-wrx-sti-and-legacy-gt-spec-b-sb10-xtss","provider":"Berry Performance Sales","version":"1.0","type":"link"}