{"product_id":"wavetrac-torque-biasing-differential-bmw-135i-335is-e87-e92-dct-215k-axle-r235-281","title":"Wavetrac Torque Biasing Differential - BMW 135i\/335iS (E87\/E92) DCT 215K Axle - R=2.35-2.81","description":"\u003ch2\u003eWavetrac Differential BMW E92 DCT 335iS E8X F10 550i E90 335D (215K w\/ Welded Ring Gear) R=2.35-2.81\u003c\/h2\u003e\n\n\u003cp\u003eThe Wavetrac is the only torque biasing differential on the market featuring patented technology that keeps power going to the gripping wheel even when the opposite wheel becomes fully unloaded. Unlike a conventional limited-slip that goes effectively open under zero axle load, Wavetrac's internal cam device generates its own preload in those conditions — so you stay in control and keep moving. Built from 9310 alloy steel gears in a case-hardened steel housing and fastened with ARP hardware, this is a serious unit for \u003cstrong\u003eBMW 215K axle\u003c\/strong\u003e applications running final drive ratios between 2.35 and 2.81.\u003c\/p\u003e\n\n\u003cp\u003eThis listing covers the Wavetrac differential for the \u003cstrong\u003eBMW 215K\u003c\/strong\u003e axle fitted with a welded ring gear, suitable for \u003cstrong\u003eE87\u003c\/strong\u003e \/ \u003cstrong\u003eE92 135i\u003c\/strong\u003e, \u003cstrong\u003eE92 335iS DCT\u003c\/strong\u003e, \u003cstrong\u003eE8X\u003c\/strong\u003e, \u003cstrong\u003eE90 335D\u003c\/strong\u003e, and \u003cstrong\u003eF10 550i\u003c\/strong\u003e platforms. Compatible with final drive ratios from 2.35 through to 2.81.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This application uses a welded OEM ring gear assembly. Machining work is required and Installation Kits are sold separately. Please read all special fitment notes before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePatented Wavetrac cam device maintains drive under zero axle load conditions — no open-diff behaviour at the worst moment\u003c\/li\u003e\n  \u003cli\u003eSuits BMW 215K axle with welded ring gear, final drive ratios 2.35–2.81\u003c\/li\u003e\n  \u003cli\u003e9310 alloy steel gears for exceptional strength under high load\u003c\/li\u003e\n  \u003cli\u003eCase-hardened steel differential housing\u003c\/li\u003e\n  \u003cli\u003eARP fasteners throughout\u003c\/li\u003e\n  \u003cli\u003eTorque ring gear bolts to 115 N·m (85 ft-lb)\u003c\/li\u003e\n  \u003cli\u003eTransferable Limited Lifetime Warranty included\u003c\/li\u003e\n  \u003cli\u003eMachining required — Installation Kit sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eVehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and final drive ratio are confirmed before ordering.\u003c\/p\u003e\n\n\u003cp\u003eNot sure if this differential suits your build? Contact our team at \u003ca href=\"mailto:sales@chicaneaustralia.com.au\"\u003esales@chicaneaustralia.com.au\u003c\/a\u003e for expert advice.\u003c\/p\u003e","brand":"Wavetrac","offers":[{"title":"Default Title","offer_id":52429338542373,"sku":"30.309.172WK","price":2849.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/2943\/6709\/files\/WTC_BMW_30.309.170WK_59e9a410-5714-4d32-baee-cd04ef57c12f.webp?v=1779758581","url":"https:\/\/www.chicaneaustralia.com.au\/products\/wavetrac-torque-biasing-differential-bmw-135i-335is-e87-e92-dct-215k-axle-r235-281","provider":"Chicane Australia","version":"1.0","type":"link"}