{"product_id":"spec-aluminum-single-mass-flywheel-sac-sb55a-bmw-n55-e8x-e9x-f22-f3x-f10","title":"Spec Aluminum Single Mass Flywheel SAC SB55A – BMW 1M \u0026 N55 (E8x \/ E9x \/ F22 \/ F3x \/ F10)","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}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eSPEC billet flywheels are CNC manufactured on-site to a .001 in. tolerance, against an industry standard of .010 in. That precision gives perfect balance and a perfectly flat bedding surface for the clutch disc. All SPEC flywheels carry SFI certification.\u003c\/p\u003e\n\u003cp\u003eThe SB55A is SPEC's aircraft-quality billet aluminum single mass flywheel for the N55 cars, cut to the OE \/ self-ratcheting (SAC) clutch pattern. At 16 lb it removes the dual-mass damper and a large share of the rotating mass, so the engine picks up and settles faster between shifts. SPEC builds flywheels for specific driving environments and does not treat them as a one-fits-all lightweight part — consult SPEC or Speed Logic for a recommendation.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eType: single mass billet flywheel\u003c\/li\u003e\n\u003cli\u003eMaterial: aircraft-quality billet aluminum\u003c\/li\u003e\n\u003cli\u003eWeight: 16 lb (SPEC published)\u003c\/li\u003e\n\u003cli\u003eCNC machined to a .001 in. tolerance for a flat clutch bedding surface and true balance at rpm\u003c\/li\u003e\n\u003cli\u003eSFI certified\u003c\/li\u003e\n\u003cli\u003eRebuildable, with a replaceable steel friction plate\u003c\/li\u003e\n\u003cli\u003eClutch compatibility: works with the stock clutch or any stock-design self-ratcheting (SAC) pressure plate. \u003cstrong\u003eIt is not an actual dual mass flywheel.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNot for use with SPEC clutch kits whose part number ends in “-2”.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x SPEC billet aluminum single mass flywheel\u003c\/li\u003e\n\u003cli\u003ePressure-plate-to-flywheel bolts\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 required.\u003c\/strong\u003e This flywheel runs with the stock clutch or a stock-design SAC aftermarket clutch. If you are replacing the clutch at the same time, use a SAC-pattern kit such as \u003ca href=\"\/products\/spec-stage-2-clutch-kit-sb553h-fits-13-bmw-335i-435i-m235i-f30-f32-f22\"\u003eSPEC Stage 2+ SB553H\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not pair this flywheel with SPEC clutch kits ending in “-2”\u003c\/strong\u003e — those take the SB55A-2.\u003c\/li\u003e\n\u003cli\u003eInstaller-supplied: new flywheel-to-crank bolts (BMW specifies single-use bolts), a flywheel locking tool and a torque wrench.\u003c\/li\u003e\n\u003cli\u003eWhen switching to a single mass flywheel some flywheel chatter or rattle is to be expected; aluminum transmits more noise than steel and makes smooth low-speed starts harder.\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 flywheel — follow the instructions supplied with the flywheel and clutch kit.\u003c\/li\u003e\n\u003cli\u003eInstallation requires removal of the transmission and should be carried out by a qualified technician. Use new flywheel-to-crank bolts and torque to BMW specification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSteel version: \u003ca href=\"\/products\/spec-single-mass-flywheel-sac-smfw-sb55s-for-2013-2016-335i-435i-f30-f32\"\u003eSPEC SB55S\u003c\/a\u003e. Confirm fitment with \u003ca href=\"\/pages\/contact-us\"\u003eSpeed Logic\u003c\/a\u003e before ordering.\u003c\/li\u003e\n\u003cli\u003e2011+ Z4 sDrive35i (N54) uses SPEC's N55-family clutch kit and SB55S-2 \/ SB55A-2 flywheel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e\u003cstrong\u003eSB55A\u003c\/strong\u003e\u003c\/li\u003e\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\u003e1M Coupe\u003c\/td\u003e\n\u003ctd\u003eE82\u003c\/td\u003e\n\u003ctd\u003eN54 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e135i\u003c\/td\u003e\n\u003ctd\u003eE82 \/ E88\u003c\/td\u003e\n\u003ctd\u003eN55 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2011–2013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e335i\u003c\/td\u003e\n\u003ctd\u003eE90 \/ E92 \/ E93\u003c\/td\u003e\n\u003ctd\u003eN55 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2011–2013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e335i\u003c\/td\u003e\n\u003ctd\u003eF30\u003c\/td\u003e\n\u003ctd\u003eN55 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2012–2015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e435i\u003c\/td\u003e\n\u003ctd\u003eF32\u003c\/td\u003e\n\u003ctd\u003eN55 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2014–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e535i\u003c\/td\u003e\n\u003ctd\u003eF10\u003c\/td\u003e\n\u003ctd\u003eN55 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2011–2014\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM235i\u003c\/td\u003e\n\u003ctd\u003eF22 \/ F23\u003c\/td\u003e\n\u003ctd\u003eN55 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2014–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eZ4 sDrive35i\u003c\/td\u003e\n\u003ctd\u003eE89\u003c\/td\u003e\n\u003ctd\u003eN54 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2011–2014\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Spec","offers":[{"title":"Default Title","offer_id":52997684035864,"sku":"SB55A","price":719.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/b27fba1e-835f-4195-a5a2-b9b0272b029e-800_2e8618c1-132f-4a85-bcc9-d17f159f626d.jpg?v=1792701259","url":"https:\/\/speedlogicauto.com\/products\/spec-aluminum-single-mass-flywheel-sac-sb55a-bmw-n55-e8x-e9x-f22-f3x-f10","provider":"SPEED LOGIC","version":"1.0","type":"link"}