{"title":"S55 Clutch \u0026 Drivetrain","description":null,"products":[{"product_id":"spec-twin-disc-clutch-kit-st-trim-sb55st-15-20-bmw-m3-m4-f80-f82","title":"Spec Twin Disc Clutch Kit – BMW M3 \/ M4 (F80\/F82)","description":"\u003cstyle\u003e.sl-desc h2{font-size:1.15em;letter-spacing:.06em;text-transform:uppercase;border-bottom:2px solid #111;padding-bottom:6px;margin:1.6em 0 .7em}.sl-desc h3{font-size:1em;margin:1.2em 0 .4em}.sl-desc ul{margin:0 0 1em 1.2em}.sl-desc li{margin:.25em 0}.va-table{width:100%;border-collapse:collapse;margin:.5em 0 1em;font-size:.95em}.va-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #333;white-space:nowrap}.va-table td{padding:8px;border-bottom:1px solid #e5e5e5;vertical-align:top}.sl-note{font-size:.9em;color:#555;margin:.4em 0 1em}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eThe SPEC Super Twin is an all-billet twin disc clutch and flywheel assembly. The assemblies are smooth and quiet, constructed from aircraft-grade aluminum and high-carbon billet steel milled to an industry-leading .001 in. tolerance for perfect balance and actuation. Friction is provided by dampened, full-faced carbon-graphite discs.\u003c\/p\u003e\n\u003cp\u003eThe kits are rebuildable by SPEC or by the end user and replacement components are always available. The flywheel and track-spec hardware are included in each kit. SPEC rates the Super Twin for street, drag racing, drifting, road racing, time-attack, pulling and rally use.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTwin disc (multi-disc) clutch and flywheel assembly\u003c\/li\u003e\n\u003cli\u003eAll-billet construction — aircraft-grade aluminum and high-carbon billet steel\u003c\/li\u003e\n\u003cli\u003eMilled to a .001 in. tolerance for balance and actuation\u003c\/li\u003e\n\u003cli\u003eFriction: dampened, full-faced carbon-graphite discs\u003c\/li\u003e\n\u003cli\u003eTrims offered on this listing: SS-Trim, P-Trim and ST Trim\u003c\/li\u003e\n\u003cli\u003eOrganic, fiber and full-metallic disc versions are also available from SPEC\u003c\/li\u003e\n\u003cli\u003eFlywheel and track-spec hardware included in each kit\u003c\/li\u003e\n\u003cli\u003eRebuildable by SPEC or by the end user; replacement components always available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTwin disc clutch assembly (pressure plate, floater, two discs)\u003c\/li\u003e\n\u003cli\u003eBillet flywheel\u003c\/li\u003e\n\u003cli\u003eTrack-spec hardware\u003c\/li\u003e\n\u003cli\u003eComplete kit as supplied by SPEC; see the installation instructions for the full bill of materials.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNone.\u003c\/strong\u003e The flywheel and track-spec hardware are supplied in the kit, so no separate flywheel purchase is needed.\u003c\/li\u003e\n\u003cli\u003eInstaller-supplied: transmission jack, new flywheel-to-crank bolts and BMW-specification transmission oil if the transmission is drained.\u003c\/li\u003e\n\u003cli\u003eSPEC states the Super Twin is a no-shimming, bolt-in installation with maintenance-free operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSPEC does not publish a downloadable installation PDF for this application — follow the printed installation and break-in instructions supplied with the kit.\u003c\/li\u003e\n\u003cli\u003eInstallation requires removal of the transmission and should be carried out by a qualified technician. Inspect the pilot bearing bore, clutch fork, release-bearing guide sleeve and slave cylinder while the transmission is out.\u003c\/li\u003e\n\u003cli\u003eBed the clutch in with light, gradual engagements before applying full load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003ePart number varies by trim — select the trim on this listing. Confirm trim choice with Speed Logic if you are unsure which suits your power level.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSS-Trim: \u003cstrong\u003eSB55SST\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eP-Trim: \u003cstrong\u003eSB55PT\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eST Trim: \u003cstrong\u003eSB55ST\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003eF80\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003eF82\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003eF87\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Spec","offers":[{"title":"SS-Trim","offer_id":42666513236134,"sku":"SB55SST","price":1709.1,"currency_code":"USD","in_stock":true},{"title":"P-Trim","offer_id":42666513268902,"sku":"SB55PT","price":1799.1,"currency_code":"USD","in_stock":true},{"title":"ST Trim","offer_id":42666513301670,"sku":"SB55ST","price":1889.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/products\/sxc-sa00mt2_sn_xl__53435.1576010606.jpg?v=1651006907"},{"product_id":"2014-2018-bmw-m4-f80-f82-f83-1200hp-rear-axle-bar-cv-internal-upgrade-only","title":"Driveshaft Shop 1200HP Rear Axle Bar\/CV Upgrade – BMW M4 (F80\/F82\/F83)","description":"\u003cstyle\u003e.sl-desc h2{font-size:1.15em;letter-spacing:.06em;text-transform:uppercase;border-bottom:2px solid #111;padding-bottom:6px;margin:1.6em 0 .7em}.sl-desc h3{font-size:1em;margin:1.2em 0 .4em}.sl-desc ul{margin:0 0 1em 1.2em}.sl-desc li{margin:.25em 0}.va-table{width:100%;border-collapse:collapse;margin:.5em 0 1em;font-size:.95em}.va-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #333;white-space:nowrap}.va-table td{padding:8px;border-bottom:1px solid #e5e5e5;vertical-align:top}.sl-note{font-size:.9em;color:#555;margin:.4em 0 1em}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eThe rear axle bar and inner CV upgrade for the 2014+ F80-F83 M3\/M4. The Driveshaft Shop developed a set of 300M axle bars along with chromoly inner and outer CV internal components. Using proprietary 1.25″ diameter high-grade 300M bars (stock axle bars are 28 spline), a custom chromoly CV cage and race set, these axles become practically indestructible. The factory outer CV housing is made from a very strong material, so this upgrade is more than enough to handle the 1200 HP rating offered.\u003c\/p\u003e\n\u003cp\u003eThis is a send-in service on your own factory axles. DSS tempers and shot-peens the OEM outer and inner housings, installs factory-style metal boot covers on the outer CV (double o-ring sealed), and installs the new chromoly cage\/race internals along with 30-spline bars.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eProprietary 1.25″ diameter high-grade 300M axle bars\u003c\/li\u003e\n\u003cli\u003e30-spline bars (stock axle bars are 28 spline)\u003c\/li\u003e\n\u003cli\u003eCustom chromoly CV cage and race set\u003c\/li\u003e\n\u003cli\u003eChromoly inner and outer CV internal components\u003c\/li\u003e\n\u003cli\u003eFactory outer CV housings retained, tempered and shot-peened\u003c\/li\u003e\n\u003cli\u003eFactory-style metal boot covers on the outer CV, double o-ring sealed\u003c\/li\u003e\n\u003cli\u003eRated to 1200 HP\u003c\/li\u003e\n\u003cli\u003eWarranty: 1 year (The Driveshaft Shop)\u003c\/li\u003e\n\u003cli\u003eBuilt to order on your cores — call for current lead times\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003eUpgrade service only: 300M axle bars, chromoly inner\/outer CV internals, cage and race set and metal boot covers installed into your supplied OEM axle housings. Your factory axles are required as cores.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYour factory OEM axles.\u003c\/strong\u003e This is an upgrade-only service — you must send in your own axles for DSS to assemble the set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRMA number.\u003c\/strong\u003e Call for lead times and an RMA number before shipping your axles in.\u003c\/li\u003e\n\u003cli\u003eSingle-use axle nuts and any damaged OEM boots or hardware should be replaced at reassembly.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eThe Driveshaft Shop does not publish a downloadable installation guide for this upgrade. Contact Speed Logic or The Driveshaft Shop directly for RMA, lead time and torque guidance.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e**You must send in your axles to have this process done, please call for lead times and an RMA number before sending them in.**\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eUpgrade service only — no new axle housings are supplied. Confirm model year fitment and current lead times with Speed Logic before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eM4R1\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eDSS SKU: 510415\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3 Sedan\u003c\/td\u003e\n\u003ctd\u003eF80\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2014–2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4 Coupe\u003c\/td\u003e\n\u003ctd\u003eF82\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2014–2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4 Convertible\u003c\/td\u003e\n\u003ctd\u003eF83\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2014–2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Driveshaft Shop","offers":[{"title":"Default Title","offer_id":48983129850136,"sku":"","price":1528.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/BMW-M4M5M6-Upgrade-Only_1.png?v=1724270573"},{"product_id":"2015-2016-bmw-m3-m4-f80-f82-with-7-speed-dct-trans-carbon-fiber-driveshaft","title":"Driveshaft Shop DCT Carbon Fiber Driveshaft – BMW M3 \/ M4 (F80\/F82)","description":"\u003cstyle\u003e.sl-desc h2{font-size:1.15em;letter-spacing:.06em;text-transform:uppercase;border-bottom:2px solid #111;padding-bottom:6px;margin:1.6em 0 .7em}.sl-desc h3{font-size:1em;margin:1.2em 0 .4em}.sl-desc ul{margin:0 0 1em 1.2em}.sl-desc li{margin:.25em 0}.va-table{width:100%;border-collapse:collapse;margin:.5em 0 1em;font-size:.95em}.va-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #333;white-space:nowrap}.va-table td{padding:8px;border-bottom:1px solid #e5e5e5;vertical-align:top}.sl-note{font-size:.9em;color:#555;margin:.4em 0 1em}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eThe Driveshaft Shop single 3.25″ carbon fiber driveshaft for the BMW M3\/M4 (F80\/F82) with the 7-speed DCT transmission. The shaft is built with a 108mm CV at one end and a flange and plate at the other, which eliminates any possible pinion angle issues.\u003c\/p\u003e\n\u003cp\u003eEvery shaft is balanced on the DSS 9,500 RPM balancer to ensure a perfectly balanced assembly, and it comes complete with an adapter plate to mount up to the transmission plus all necessary hardware for installation.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3.25″ carbon fiber tube\u003c\/li\u003e\n\u003cli\u003eSingle-piece design\u003c\/li\u003e\n\u003cli\u003e108mm CV at one end, flange and plate at the other\u003c\/li\u003e\n\u003cli\u003eEliminates pinion angle issues\u003c\/li\u003e\n\u003cli\u003eBalanced on a 9,500 RPM balancer\u003c\/li\u003e\n\u003cli\u003eIncludes a transmission adapter plate\u003c\/li\u003e\n\u003cli\u003eFor the 7-speed DCT transmission, non-Competition Package vehicles only\u003c\/li\u003e\n\u003cli\u003eWarranty: 1 year (The Driveshaft Shop)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-piece carbon fiber driveshaft\u003c\/li\u003e\n\u003cli\u003eTransmission adapter plate\u003c\/li\u003e\n\u003cli\u003eAll necessary installation hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNone.\u003c\/strong\u003e The Driveshaft Shop supplies the transmission adapter plate and all hardware necessary for installation.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended — driveline fasteners are torque-critical.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eThe Driveshaft Shop does not publish a downloadable installation guide for this part number. Contact Speed Logic or The Driveshaft Shop directly for fitment and torque guidance.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ePLEASE NOTE: This driveshaft is for non-Competition Pack vehicles ONLY.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e7-speed DCT, non-Competition Package vehicles only. Confirm transmission and package fitment with Speed Logic before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eBMWSH15-C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eDSS SKU: 610318\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3 Sedan\u003c\/td\u003e\n\u003ctd\u003eF80\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4 Coupe\u003c\/td\u003e\n\u003ctd\u003eF82\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Driveshaft Shop","offers":[{"title":"Default Title","offer_id":48983158685976,"sku":"610318","price":2423.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/Carbon-Shaft_1_02628a81-8a9c-4cc3-aba0-42ed04ca2760.png?v=1724271456"}],"url":"https:\/\/speedlogicauto.com\/collections\/s55-clutch-drivetrain.oembed","provider":"SPEED LOGIC","version":"1.0","type":"link"}