{"product_id":"mmx-bmw-s55-n55-single-piece-crank-hub-upgrade","title":"MMX BMW S55 \u0026 N55 Single Piece Crank Hub Upgrade","description":"\u003cp data-start=\"56\" data-end=\"423\"\u003eThe \u003cstrong data-start=\"60\" data-end=\"98\"\u003eMMX Single Piece Crank Hub Upgrade\u003c\/strong\u003e is the ultimate solution to the well-documented crank hub failures affecting BMW’s \u003cstrong data-start=\"182\" data-end=\"205\"\u003eS55 and N55 engines\u003c\/strong\u003e. Designed with a \u003cstrong data-start=\"223\" data-end=\"261\"\u003e4-pin dowelled single-piece design\u003c\/strong\u003e, this upgrade eliminates the risk of the factory three-piece hub slipping – a known cause of catastrophic engine failure in M2, M3, M4, and N55-powered models.\u003c\/p\u003e\n\u003cp data-start=\"425\" data-end=\"763\"\u003eCNC-machined in the UK from \u003cstrong data-start=\"453\" data-end=\"487\"\u003eheat-treated billet EN36 steel\u003c\/strong\u003e with 0.75mm case hardening, the hub offers exceptional strength and durability. Four aerospace-grade precision dowels mechanically lock the hub to the crankshaft, preventing any possibility of movement. The kit also includes a brand new OE crank bolt for complete security.\u003c\/p\u003e\n\u003cp data-start=\"765\" data-end=\"1082\"\u003eTo simplify installation, the MMX kit comes complete with a \u003cstrong data-start=\"825\" data-end=\"896\"\u003ebolt-on drilling guide jig, location bolt, and HSS rolled drill bit\u003c\/strong\u003e – ensuring professional fitment is accurate, safe, and straightforward. For those seeking the ultimate level of security, the hub is also available with an optional \u003cstrong data-start=\"1062\" data-end=\"1079\"\u003ecapture plate\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"1084\" data-end=\"1087\"\u003e\n\u003ch3 data-start=\"1089\" data-end=\"1108\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1110\" data-end=\"1634\"\u003e\n\u003cli data-start=\"1110\" data-end=\"1141\"\u003e\n\u003cp data-start=\"1112\" data-end=\"1141\"\u003e\u003cstrong data-start=\"1112\" data-end=\"1128\"\u003ePart Number:\u003c\/strong\u003e MMR20-1004\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1142\" data-end=\"1207\"\u003e\n\u003cp data-start=\"1144\" data-end=\"1207\"\u003e\u003cstrong data-start=\"1144\" data-end=\"1167\"\u003eSingle-piece design\u003c\/strong\u003e – eliminates OE crank hub slip issues\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1208\" data-end=\"1279\"\u003e\n\u003cp data-start=\"1210\" data-end=\"1279\"\u003e\u003cstrong data-start=\"1210\" data-end=\"1248\"\u003e4 aerospace-grade precision dowels\u003c\/strong\u003e for a secure mechanical lock\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1280\" data-end=\"1352\"\u003e\n\u003cp data-start=\"1282\" data-end=\"1352\"\u003eMachined from \u003cstrong data-start=\"1296\" data-end=\"1330\"\u003eheat-treated billet EN36 steel\u003c\/strong\u003e with case hardening\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1353\" data-end=\"1394\"\u003e\n\u003cp data-start=\"1355\" data-end=\"1394\"\u003eSupplied with a \u003cstrong data-start=\"1371\" data-end=\"1392\"\u003enew OE crank bolt\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1395\" data-end=\"1468\"\u003e\n\u003cp data-start=\"1397\" data-end=\"1468\"\u003eIncludes full \u003cstrong data-start=\"1411\" data-end=\"1466\"\u003einstallation jig, drilling guide, and HSS drill bit\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1469\" data-end=\"1525\"\u003e\n\u003cp data-start=\"1471\" data-end=\"1525\"\u003eOptional \u003cstrong data-start=\"1480\" data-end=\"1497\"\u003ecapture plate\u003c\/strong\u003e for additional protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1526\" data-end=\"1565\"\u003e\n\u003cp data-start=\"1528\" data-end=\"1565\"\u003eDesigned and manufactured in the UK\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1566\" data-end=\"1634\"\u003e\n\u003cp data-start=\"1568\" data-end=\"1634\"\u003eThe \u003cstrong data-start=\"1572\" data-end=\"1604\"\u003eultimate reliability upgrade\u003c\/strong\u003e for BMW S55 and N55 engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1636\" data-end=\"1639\"\u003e\n\u003ch3 data-start=\"1641\" data-end=\"1661\"\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1663\" data-end=\"1915\"\u003e\n\u003cli data-start=\"1663\" data-end=\"1703\"\u003e\n\u003cp data-start=\"1665\" data-end=\"1703\"\u003eBMW 1 Series (F20\/F21) – M135i (N55)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1704\" data-end=\"1778\"\u003e\n\u003cp data-start=\"1706\" data-end=\"1778\"\u003eBMW 2 Series (F22\/F23, F87) – M235i, OG M2 (N55), M2 Competition (S55)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1779\" data-end=\"1833\"\u003e\n\u003cp data-start=\"1781\" data-end=\"1833\"\u003eBMW 3 Series (F30\/F31, F80) – 335i (N55), M3 (S55)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1834\" data-end=\"1888\"\u003e\n\u003cp data-start=\"1836\" data-end=\"1888\"\u003eBMW 4 Series (F32\/F33, F82) – 435i (N55), M4 (S55)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1889\" data-end=\"1915\"\u003e\n\u003cp data-start=\"1891\" data-end=\"1915\"\u003eModel Years: 2011–2021\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1917\" data-end=\"1920\"\u003e\n\u003cp data-start=\"1922\" data-end=\"2098\"\u003eProtect your BMW from crank hub failure with the \u003cstrong data-start=\"1971\" data-end=\"2019\"\u003eMMX S55 \u0026amp; N55 Single Piece Crank Hub Upgrade\u003c\/strong\u003e – precision-engineered for strength, durability, and complete peace of mind.\u003c\/p\u003e\n\u003c!----\u003e","brand":"R44 Performance","offers":[{"title":"Default Title","offer_id":52896532168928,"sku":"MMR20-1004","price":1044.21,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/www.carouselstore.co.uk\/products\/mmx-bmw-s55-n55-single-piece-crank-hub-upgrade","provider":"Carousel Store","version":"1.0","type":"link"}