{"product_id":"wavetrac-atb-lsd-built-differential-for-215k-3-08-final-drive-axle-f20-f21-m135i-f20-f21-m140i-f22-f23-m235i-f22-f23-m240i-f34-340i","title":"BMW F20 F21 F22 F23 F34 M135i M140i M235i M240i 340i Wavetrac ATB LSD","description":"\u003cp\u003eThe Wavetrac ATB LSD replaces the open diff in F20\/F21 M135i \u0026amp; M140i, F22\/F23 M235i \u0026amp; M240i, and F34 340i models with 215K 3.08 final drive axles. It’s a true bolt-in fit - no modifications needed.\u003c\/p\u003e\u003cp\u003eUnlike Quaife or Torsen units, its wave-gear design maintains drive to the loaded wheel even when the other lifts - critical for UK B-road grip and track-day consistency.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e9310 steel gears and billet steel housing built for fast-road or track-day use\u003c\/li\u003e\n\u003cli\u003eCarbon fibre bias plates deliver stable torque bias from day one to 100k miles\u003c\/li\u003e\n\u003cli\u003eARP fasteners, silent operation, fully compatible with factory traction control\u003c\/li\u003e\n\u003cli\u003eNo setup, no maintenance, no clutch chatter - just predictable, progressive grip\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cuz Race Cars","offers":[{"title":"Default Title","offer_id":54915580494167,"sku":"30.309.155WKFM1","price":2398.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1038\/4575\/7271\/files\/WavetracR_56190WK640-800x800__94118.1608640634_0af09a8a-17c7-4ffe-bf3e-b79e1d44be1c.jpg?v=1788720354","url":"https:\/\/cuzracecars.com\/products\/wavetrac-atb-lsd-built-differential-for-215k-3-08-final-drive-axle-f20-f21-m135i-f20-f21-m140i-f22-f23-m235i-f22-f23-m240i-f34-340i","provider":"Cuz Race Cars","version":"1.0","type":"link"}