{"product_id":"wavetrac-lsd-bmw-f20-f30-f32-built-differential-3-15","title":"Wavetrac ATB LSD Built Differential for BMW 1, 2, 3 \u0026 4 Series F20\/F21\/F22\/F30\/F31\/F32\/F33\/F34\/F36 (3.15 Final Drive)","description":"\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-(--header-height)\" dir=\"auto\" data-turn-id=\"4c8861af-a9c0-494a-a2dd-8b91be72377d\" data-testid=\"conversation-turn-71\" data-scroll-anchor=\"false\" data-turn=\"user\" tabindex=\"-1\"\u003e\u003c\/article\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-699d8c83-ab9c-8390-818b-1bb9958041cf-163\" data-testid=\"conversation-turn-72\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"c7ed4b65-0924-41ad-b979-eb03e585cc35\" dir=\"auto\" data-message-model-slug=\"gpt-5-3\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"393\"\u003eTransform the driving dynamics of your BMW with the \u003cstrong data-start=\"52\" data-end=\"138\"\u003eWavetrac ATB Limited Slip Differential (LSD) Built Differential (3.15 Final Drive)\u003c\/strong\u003e, designed for F2X, F3X and F4X platforms. This complete differential solution delivers exceptional traction, improved power delivery and enhanced control, making it one of the most effective upgrades for both daily-driven and high-performance BMW builds.\u003c\/p\u003e\n\u003chr data-start=\"395\" data-end=\"398\"\u003e\n\u003ch3 data-section-id=\"q4c1cr\" data-start=\"400\" data-end=\"413\"\u003eFeatures:\u003c\/h3\u003e\n\u003cul data-start=\"415\" data-end=\"779\"\u003e\n\u003cli data-section-id=\"1nr5zt5\" data-start=\"415\" data-end=\"482\"\u003e\n\u003cp data-start=\"417\" data-end=\"482\"\u003eComplete built differential with \u003cstrong data-start=\"450\" data-end=\"470\"\u003eWavetrac ATB LSD\u003c\/strong\u003e installed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1dkb0c1\" data-start=\"483\" data-end=\"549\"\u003e\n\u003cp data-start=\"485\" data-end=\"549\"\u003eDesigned for BMW F20\/F21\/F22\/F30\/F31\/F32\/F33\/F34\/F36 platforms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"4rlsj4\" data-start=\"550\" data-end=\"580\"\u003e\n\u003cp data-start=\"552\" data-end=\"580\"\u003e\u003cstrong data-start=\"552\" data-end=\"578\"\u003e3.15 final drive ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"72zgnb\" data-start=\"581\" data-end=\"640\"\u003e\n\u003cp data-start=\"583\" data-end=\"640\"\u003eAdvanced torque-biasing technology for maximum traction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ikng30\" data-start=\"641\" data-end=\"704\"\u003e\n\u003cp data-start=\"643\" data-end=\"704\"\u003eEliminates common limitations of factory open differentials\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"d4ilkw\" data-start=\"705\" data-end=\"779\"\u003e\n\u003cp data-start=\"707\" data-end=\"779\"\u003ePrecision-built for durability, reliability and consistent performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"781\" data-end=\"784\"\u003e\n\u003ch3 data-section-id=\"1uesbzj\" data-start=\"786\" data-end=\"820\"\u003eWhy Upgrade to a Wavetrac LSD?\u003c\/h3\u003e\n\u003cp data-start=\"822\" data-end=\"1095\"\u003eMost modern BMW models are equipped with open differentials, which can limit traction under acceleration—particularly in wet conditions or higher-powered applications. The Wavetrac ATB LSD solves this by intelligently distributing torque between the rear wheels, providing:\u003c\/p\u003e\n\u003cul data-start=\"1097\" data-end=\"1274\"\u003e\n\u003cli data-section-id=\"r9jdhr\" data-start=\"1097\" data-end=\"1138\"\u003e\n\u003cp data-start=\"1099\" data-end=\"1138\"\u003eImproved traction during acceleration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1vh4tjh\" data-start=\"1139\" data-end=\"1183\"\u003e\n\u003cp data-start=\"1141\" data-end=\"1183\"\u003eIncreased stability when exiting corners\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1hemwzs\" data-start=\"1184\" data-end=\"1234\"\u003e\n\u003cp data-start=\"1186\" data-end=\"1234\"\u003eMore predictable and controlled power delivery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ydjku5\" data-start=\"1235\" data-end=\"1274\"\u003e\n\u003cp data-start=\"1237\" data-end=\"1274\"\u003eEnhanced overall driving engagement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1276\" data-end=\"1441\"\u003eUnlike traditional LSDs, Wavetrac’s patented design maintains drive even when one wheel loses traction completely, ensuring consistent performance in all conditions.\u003c\/p\u003e\n\u003chr data-start=\"1443\" data-end=\"1446\"\u003e\n\u003ch3 data-section-id=\"zghjxb\" data-start=\"1448\" data-end=\"1480\"\u003eAdvanced Wavetrac Technology\u003c\/h3\u003e\n\u003cp data-start=\"1482\" data-end=\"1613\"\u003eWavetrac’s ATB (Automatic Torque Biasing) differential is widely regarded as one of the most advanced systems available, featuring:\u003c\/p\u003e\n\u003cul data-start=\"1615\" data-end=\"1824\"\u003e\n\u003cli data-section-id=\"zxtcqd\" data-start=\"1615\" data-end=\"1651\"\u003e\n\u003cp data-start=\"1617\" data-end=\"1651\"\u003ePatented load-sensing technology\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1hpy0fs\" data-start=\"1652\" data-end=\"1708\"\u003e\n\u003cp data-start=\"1654\" data-end=\"1708\"\u003eSmooth, maintenance-free operation (no clutch packs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ht7e52\" data-start=\"1709\" data-end=\"1767\"\u003e\n\u003cp data-start=\"1711\" data-end=\"1767\"\u003eSeamless integration with BMW traction control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"16u11p4\" data-start=\"1768\" data-end=\"1824\"\u003e\n\u003cp data-start=\"1770\" data-end=\"1824\"\u003eLong-term durability without performance degradation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1826\" data-end=\"1829\"\u003e\n\u003ch3 data-section-id=\"wj70fh\" data-start=\"1831\" data-end=\"1883\"\u003eBuilt Differential Solution – No Downtime Hassle\u003c\/h3\u003e\n\u003cp data-start=\"1885\" data-end=\"2159\"\u003eBMW differentials from this generation are typically friction-welded, making LSD installation complex and time-consuming. This solution removes that challenge by supplying a \u003cstrong data-start=\"2059\" data-end=\"2107\"\u003efully built axle with Wavetrac LSD installed\u003c\/strong\u003e, eliminating the need for lengthy vehicle downtime.\u003c\/p\u003e\n\u003cp data-start=\"2161\" data-end=\"2189\"\u003eEach unit is professionally:\u003c\/p\u003e\n\u003cul data-start=\"2191\" data-end=\"2346\"\u003e\n\u003cli data-section-id=\"1m6j9vb\" data-start=\"2191\" data-end=\"2221\"\u003e\n\u003cp data-start=\"2193\" data-end=\"2221\"\u003eDeconstructed and machined\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"182mi99\" data-start=\"2222\" data-end=\"2268\"\u003e\n\u003cp data-start=\"2224\" data-end=\"2268\"\u003ePrepared with drilled and tapped ring gear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1kl3u5c\" data-start=\"2269\" data-end=\"2308\"\u003e\n\u003cp data-start=\"2271\" data-end=\"2308\"\u003eAssembled with precision tolerances\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1eb5pz3\" data-start=\"2309\" data-end=\"2346\"\u003e\n\u003cp data-start=\"2311\" data-end=\"2346\"\u003eQuality checked prior to dispatch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2348\" data-end=\"2351\"\u003e\n\u003ch3 data-section-id=\"ilktjt\" data-start=\"2353\" data-end=\"2380\"\u003eAvailable Build Options\u003c\/h3\u003e\n\u003cul data-start=\"2382\" data-end=\"2709\"\u003e\n\u003cli data-section-id=\"1bb3dsk\" data-start=\"2382\" data-end=\"2498\"\u003e\n\u003cp data-start=\"2384\" data-end=\"2498\"\u003e\u003cstrong data-start=\"2384\" data-end=\"2408\"\u003eCustomer Axle Build:\u003c\/strong\u003e\u003cbr data-start=\"2408\" data-end=\"2411\"\u003eYour supplied axle is modified and rebuilt with a Wavetrac LSD (subject to condition)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zqebe6\" data-start=\"2500\" data-end=\"2604\"\u003e\n\u003cp data-start=\"2502\" data-end=\"2604\"\u003e\u003cstrong data-start=\"2502\" data-end=\"2525\"\u003eSourced Axle Build:\u003c\/strong\u003e\u003cbr data-start=\"2525\" data-end=\"2528\"\u003eA suitable used axle is sourced, rebuilt and supplied with LSD installed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"c6nvf5\" data-start=\"2606\" data-end=\"2709\"\u003e\n\u003cp data-start=\"2608\" data-end=\"2709\"\u003e\u003cstrong data-start=\"2608\" data-end=\"2637\"\u003eBrand New BMW Axle Build:\u003c\/strong\u003e\u003cbr data-start=\"2637\" data-end=\"2640\"\u003eA brand new BMW axle is supplied and upgraded with a Wavetrac LSD\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2711\" data-end=\"2800\"\u003e\u003cem data-start=\"2711\" data-end=\"2800\"\u003eAll axles are supplied dry and must be filled with the correct oil before installation.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr data-start=\"2802\" data-end=\"2805\"\u003e\n\u003ch3 data-section-id=\"1n3tt7r\" data-start=\"2807\" data-end=\"2856\"\u003eCompatibility – BMW Models (3.15 Final Drive)\u003c\/h3\u003e\n\u003cp data-start=\"2858\" data-end=\"2905\"\u003e\u003cstrong data-start=\"2858\" data-end=\"2882\"\u003e1 Series (F20 \/ F21)\u003c\/strong\u003e\u003cbr data-start=\"2882\" data-end=\"2885\"\u003e118dX, 120d, 120dX\u003c\/p\u003e\n\u003cp data-start=\"2907\" data-end=\"2934\"\u003e\u003cstrong data-start=\"2907\" data-end=\"2925\"\u003e2 Series (F22)\u003c\/strong\u003e\u003cbr data-start=\"2925\" data-end=\"2928\"\u003e218d\u003c\/p\u003e\n\u003cp data-start=\"2936\" data-end=\"3030\"\u003e\u003cstrong data-start=\"2936\" data-end=\"2969\"\u003e3 Series (F30 \/ F31 \/ F34 GT)\u003c\/strong\u003e\u003cbr data-start=\"2969\" data-end=\"2972\"\u003e316d, 320d, 320dX, 320iX, 328i, 328iX, 335i, 335iX, 340i\u003c\/p\u003e\n\u003cp data-start=\"3032\" data-end=\"3110\"\u003e\u003cstrong data-start=\"3032\" data-end=\"3062\"\u003e4 Series (F32 \/ F33 \/ F36)\u003c\/strong\u003e\u003cbr data-start=\"3062\" data-end=\"3065\"\u003e420d, 420dX, 428i, 428iX, 435i, 435iX, 440i\u003c\/p\u003e\n\u003cp data-start=\"3112\" data-end=\"3218\"\u003e\u003cem data-start=\"3112\" data-end=\"3218\"\u003eCompatible with vehicles using 3.15 final drive axles (e.g. BMW part numbers 33107603748 \/ 33107603749).\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-start=\"3220\" data-end=\"3430\"\u003e\u003cstrong data-start=\"3220\" data-end=\"3234\"\u003eImportant:\u003c\/strong\u003e\u003cbr data-start=\"3234\" data-end=\"3237\"\u003eAxle specifications can vary depending on model, trim and market. Please provide your VIN before or after purchase so our team can confirm compatibility and ensure the correct unit is supplied.\u003c\/p\u003e\n\u003chr data-start=\"3432\" data-end=\"3435\"\u003e\n\u003ch3 data-section-id=\"4owvxf\" data-start=\"3437\" data-end=\"3461\"\u003eWhy Choose Wavetrac?\u003c\/h3\u003e\n\u003cp data-start=\"3463\" data-end=\"3668\"\u003eWavetrac differentials are trusted globally for their ability to deliver consistent, reliable performance without compromise. Their innovative design sets them apart from traditional LSD systems, offering:\u003c\/p\u003e\n\u003cul data-start=\"3670\" data-end=\"3850\"\u003e\n\u003cli data-section-id=\"1umn5nu\" data-start=\"3670\" data-end=\"3717\"\u003e\n\u003cp data-start=\"3672\" data-end=\"3717\"\u003eSuperior traction in all driving conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1jmb2k2\" data-start=\"3718\" data-end=\"3782\"\u003e\n\u003cp data-start=\"3720\" data-end=\"3782\"\u003eNo maintenance requirements associated with clutch-type LSDs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ggbm3r\" data-start=\"3783\" data-end=\"3850\"\u003e\n\u003cp data-start=\"3785\" data-end=\"3850\"\u003eProven durability across road and high-performance applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3852\" data-end=\"3855\"\u003e\n\u003ch3 data-section-id=\"th883x\" data-start=\"3857\" data-end=\"3890\"\u003eWhy Buy from R44 Performance?\u003c\/h3\u003e\n\u003cp data-start=\"3892\" data-end=\"4000\"\u003eR44 Performance supplies high-quality BMW drivetrain upgrades backed by expert knowledge and global support.\u003c\/p\u003e\n\u003cul data-start=\"4002\" data-end=\"4175\"\u003e\n\u003cli data-section-id=\"16tk2on\" data-start=\"4002\" data-end=\"4047\"\u003e\n\u003cp data-start=\"4004\" data-end=\"4047\"\u003eSpecialist BMW performance parts supplier\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1o2wtd1\" data-start=\"4048\" data-end=\"4092\"\u003e\n\u003cp data-start=\"4050\" data-end=\"4092\"\u003eExpert fitment and compatibility support\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"gx1ha\" data-start=\"4093\" data-end=\"4125\"\u003e\n\u003cp data-start=\"4095\" data-end=\"4125\"\u003eWorldwide shipping available\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1e5s7dp\" data-start=\"4126\" data-end=\"4175\"\u003e\n\u003cp data-start=\"4128\" data-end=\"4175\"\u003eTrusted by enthusiasts and performance builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4177\" data-end=\"4375\"\u003eUpgrade your BMW’s traction, control and driving experience with the \u003cstrong data-start=\"4246\" data-end=\"4304\"\u003eWavetrac ATB LSD Built Differential (3.15 Final Drive)\u003c\/strong\u003e—a proven solution for unlocking the full potential of your drivetrain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e","brand":"Wavetrac","offers":[{"title":"Supply and fit Wavetrac LSD into customers supplied axle (pending condition)","offer_id":57173784428926,"sku":"33107603748-W-3","price":2268.0,"currency_code":"GBP","in_stock":true},{"title":"Supply and fit a Wavetrac LSD into a sourced used axle (pending availability)","offer_id":57173784461694,"sku":"33107603748-W-4","price":2748.0,"currency_code":"GBP","in_stock":true},{"title":"Supply and fit a Wavetrac LSD into a new axle from BMW","offer_id":57173784494462,"sku":"33107603748-W-5","price":4644.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0280\/7568\/8011\/files\/wavetrac-atb-lsd-built-differential-bmw-f20-f30-f32-3-15-final-drive.jpg?v=1774612043","url":"https:\/\/r44performance.com\/products\/wavetrac-lsd-bmw-f20-f30-f32-built-differential-3-15","provider":"R44 Performance","version":"1.0","type":"link"}