{"product_id":"wavetrac-differential-for-750i-with-3-46-final-drive","title":"Wavetrac Differential for 750i  with 3.46 final drive","description":"\u003cp\u003e\u003cstrong\u003eMachining required:\u003c\/strong\u003e on this BMW axle the OE ring gear is welded to the differential. To fit this Wavetrac, the ring gear must be separated from the original differential, then drilled and tapped to accept ring gear bolts. Add our \u003ca href=\"\/products\/machining-operation-for-wavetrac-differential-for-750i-with-3-46-final-drive\"\u003eMachining Operation for Wavetrac Differential for 750i  with 3.46 final drive\u003c\/a\u003e service to your order.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eSimply put - \u003cspan style=\"font-weight: bold;\"\u003eWavetrac is the only gear diff on the market that does not lose all drive when one axle is unloaded.\u003c\/span\u003e Axles become unloaded in aggressive driving, track cornering, extremely slick surfaces, etc. It happens more than most people realise.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eWe won’t go into torque bias ratios or the concept of how torque biasing diffs work at this point. Let’s get to how the Wavetrac affects performance:\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eFor example, you have a conventional gear diff (OEM, Quaife, MF, OBX, Truetrac, Torsen, etc.), you're on a race track for a track day and during cornering your inside wheel bumps over the curbing. This is normal for track driving. The issue is that for the brief moments your inside tire becomes unloaded when bouncing over curbs, your other wheel is not getting drive - is not putting power down. Gear diffs need load on both axles in order to function. The result on a track (or during aggressive driving) is that there are many times when a normal gear diff supplies only intermittent power to the gripping wheel.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eNow, same track with Wavetrac: the patented cam device in the Wavetrac prevents loss of drive when that inside wheel is unloaded. The device is able to generate a load inside the diff (to replace the lost load as it happens) that can then be biased to the gripping wheel - in the end making more consistent power delivery through a corner. That makes the car more predictable, and faster overall.\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eOther benefits:\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePatented Carbon Fibre Bias Plate for the pinions. All other gear type LSDs run the pinions on the housing, meaning the friction from 0 miles is different to 100 miles, thus effectiveness is reduced over the life of the diff. With the Wavetrac performance is consistent with the Carbon Fibre bias plates!\u003c\/li\u003e\n\u003cli\u003ePatented Wave Profile eliminates the effect of a near to and zero load condition drive ability issues found in all other gear type ATB LSDs.\u003c\/li\u003e\n\u003cli\u003eARP Bolts used throughout for superior faster reliability. \u003c\/li\u003e\n\u003cli\u003e9310 steel gears run in billet or forged steel bodies. \u003c\/li\u003e\n\u003cli\u003eManufactured \u0026amp; Designed in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\" style=\"line-height: 13.800000190734863px;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eWAVETRAC: Smooth is Fast\u003c\/span\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\" style=\"line-height: 13.800000190734863px;\"\u003eThe beauty of the Wavetrac is that it is ideally suited to high performance road cars that see track use. It is very strong, yet transparent to both driver and traction control electronics during regular driving. On the track or in spirited road use, it provides drive to both wheels without the handling issues that traditional clutch type diffs create (there is no tendency to push\/understeer with a Wavetrac). \u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\" style=\"line-height: 13.800000190734863px;\"\u003eThe Wavetrac outperforms other gear type differentials because unlike them, it won't lose drive when one axle is unloaded (which happens more often than you'd think).\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\" style=\"line-height: 13.800000190734863px;\"\u003eLastly, one of the most underrated benefits of the Wavetrac is its smooth delivery of power near the limit. Its patented design makes for a very predictable, smooth addition of power when you need it most - when things are at their limits: on the edge of traction mid-corner and using throttle to keep it there; or coming into a corner a little hot, but quickly back on it to maintain exit speed...\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\" style=\"line-height: 13.800000190734863px;\"\u003eThese situations are often subjective to the driver, but the benefit can be felt. The Wavetrac makes you faster because it lets you drive with confidence. \u003cspan style=\"font-weight: bold;\"\u003eSmooth is fast.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-weight: bold; color: inherit;\"\u003eIMPORTANT NOTE FOR WELDED RING GEAR VEHICLES\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin-top: 0.5em; margin-bottom: 0.5em; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 0.8em;\"\u003e\u003cspan style=\"color: inherit;\"\u003eSince March, 2007 production, BMW has fitted rear axles where the ring gear is welded to the differential carrier. Prior to ordering, please send the last 7 digits of your VIN, vehicle details and transmission type to sales@regalautosport.com so we can identify the correct differential and installation kit.  \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin-top: 0.5em; margin-bottom: 0.5em; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 0.8em;\"\u003e\u003cspan style=\"color: inherit;\"\u003eOur Install Kits, combined with precision machinework, allow fitment of a Wavetrac® differential in late-model BMW rear axles where the ring gear is factory welded to the standard differential.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin-top: 0.5em; margin-bottom: 0.5em; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 0.8em;\"\u003e\u003cspan style=\"color: inherit;\"\u003eUpon receipt of a customer’s differential\/ring gear assembly, the ring gear is separated from the stock carrier using CNC equipment. The ring gear is then machined, drilled and threaded to allow bolt mounting to a new Wavetrac® differential.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin-top: 0.5em; margin-bottom: 0.5em; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 0.8em;\"\u003e\u003cspan style=\"color: inherit;\"\u003eWe then return to the customer:\u003c\/span\u003e\u003c\/p\u003e\u003cblockquote style=\"font-family: -webkit-standard;\"\u003e\u003cp style=\"margin-top: 0.5em; margin-bottom: 0.5em; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 0.8em;\"\u003e\u003cspan style=\"color: inherit;\"\u003e• Wavetrac® Differential\u003cbr\u003e• Customer’s machined ring gear\u003cbr\u003e• Precision-ground spacer ring (where required)\u003cbr\u003e• Set (10) of custom, high strength ARP® ring gear bolts\u003c\/span\u003e\u003c\/p\u003e\u003c\/blockquote\u003e\u003cp style=\"margin-top: 0.5em; margin-bottom: 0.5em; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 0.8em;\"\u003e\u003cspan style=\"color: inherit;\"\u003eFor the best possible performance, disassembly of the stock axle, and fitment of the Wavetrac and Install Kit should be performed by Regal Autosport. This ensures that the condition of the axle can be assessed before modifications are performed, and that the re-assembly is done professionally - ensuring correct gear backlash and bearing end play.\u003c\/span\u003e\u003c\/p\u003e","brand":"Wavetrac","offers":[{"title":"Default Title","offer_id":55531048829269,"sku":"30.309.155WK","price":1249.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/3327\/0357\/files\/30.309.155WK_2030.309.155WK-2_20_282_29.webp?v=1787162418","url":"https:\/\/shop.regalautosport.com\/products\/wavetrac-differential-for-750i-with-3-46-final-drive","provider":"Regal Autosport","version":"1.0","type":"link"}