{"product_id":"mmr-4-pinned-single-pice-crank-hub-for-bmw-n55-s55","title":"MMX 4-Pin One-Piece Crank Hub Upgrade, Keyed Pinned Hub Conversion for BMW S55 \u0026 N55 Engines (M2 Competition, M3, M4; selected 35i)","description":"\u003cdiv\u003e\n  \u003ch2\u003eStop timing slip and protect your BMW’s heart\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The factory multi-piece friction hub used on these turbocharged straight-six engines can rotate under shock loads, shifting cam timing and risking serious top-end damage. This four-pin, single-piece crankshaft hub upgrade delivers a positive mechanical drive between the crank and timing gear, so your mapping stays where it should, pull after pull. For belt-and-braces security, add the optional Capture Plate to lock everything down.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhy this upgrade is essential\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eFour-pin positive location prevents rotational movement under high torque and rapid shifts\u003c\/li\u003e\n    \u003cli\u003eOne-piece design eliminates the known slip associated with the OE friction-plate arrangement\u003c\/li\u003e\n    \u003cli\u003eProtects against costly valve-to-piston contact by keeping timing rock steady\u003c\/li\u003e\n    \u003cli\u003ePerfect preventative mod for tuned cars, hybrid turbos, track days and hard road use\u003c\/li\u003e\n    \u003cli\u003eOptional Capture Plate available for ultimate crank bolt security\u003c\/li\u003e\n    \u003cli\u003eEngine compatibility: BMW S55 and N55 platforms, including M2 Competition, M3, M4 and selected 35i models\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReal-world results\u003c\/h3\u003e\n  \u003cp\u003e\n    We have installed this four-pin hub on numerous customer builds at MJ Modifications. Feedback has been consistently positive, with owners praising the peace of mind, reliability under aggressive driving and the confidence to push harder after a remap. It is our go-to fix for timing slip concerns on these engines.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWho is it for\u003c\/h3\u003e\n  \u003cp\u003e\n    Ideal for anyone running increased boost, launch control, fast road, drag or circuit work, as well as owners who simply want to safeguard their investment with a proven reliability upgrade.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation\u003c\/h3\u003e\n  \u003cp\u003e\n    Professional fitting is strongly recommended. For a hassle-free service, book your installation with MJ Modifications in Warwickshire. Request a quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eGood to know\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eSingle-piece, four-pin hub design for maximum stability\u003c\/li\u003e\n    \u003cli\u003eCapture Plate available separately for added security on high-output applications\u003c\/li\u003e\n    \u003cli\u003eA proven preventative measure against timing drift on S55 and N55 engines\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSearch-friendly terms\u003c\/h3\u003e\n  \u003cp\u003e\n    BMW M3 M4 M2 Competition timing hub fix, keyed hub conversion, 4 pin crankshaft hub upgrade, pinned hub kit, crank sprocket solution, timing slip repair, anti slip timing hub, BMW F80 F82 F83 F87 reliability mod, N55 35i crank hub upgrade, S55 timing hub solution, crank bolt capture plate, engine protection upgrade, fast road and track day preparation, remapped BMW timing security.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"AROS GROUP LTD","offers":[{"title":"Without MMR capture plate","offer_id":56496629416322,"sku":"MMR20-1004","price":682.49,"currency_code":"GBP","in_stock":true},{"title":"With MMR capture plate","offer_id":56496629449090,"sku":"MMR20-1004FK","price":787.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/MMR20-10042.png?v=1774093719","url":"https:\/\/mjmodifications.co.uk\/products\/mmr-4-pinned-single-pice-crank-hub-for-bmw-n55-s55","provider":"MJ Modifications","version":"1.0","type":"link"}