{"product_id":"wavetrac-atb-lsd-lukkopera-e9x-335i-e39-540i-e52-z8-215k-r-2-81-bolted-oem-ring-gears","title":"Wavetrac ATB LSD Differential - E9X 335i\/E39 540i\/E52 Z8 (215K Bolt) r=2.81","description":"\u003ch2 data-start=\"182\" data-end=\"250\"\u003e \u003cstrong data-start=\"184\" data-end=\"248\"\u003eWavetrac ATB lockable differential for BMW (215 axle)\u003c\/strong\u003e\n\u003c\/h2\u003e\n\n\u003ch3 data-start=\"251\" data-end=\"312\"\u003e \u003cstrong data-start=\"255\" data-end=\"310\"\u003eTransmission r = 2.81 → BMW E9X 335i \/ E39 540i \/ E52 Z8\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp data-start=\"313\" data-end=\"362\"\u003e \u003cstrong data-start=\"313\" data-end=\"362\"\u003e(Bolted Ring Gear)\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp data-start=\"364\" data-end=\"731\"\u003e Simply put, \u003cstrong data-start=\"391\" data-end=\"461\"\u003eWavetrac is the only gear-based differential on the market\u003c\/strong\u003e that \u003cstrong data-start=\"468\" data-end=\"530\"\u003edoes not lose all traction when one axle is under load\u003c\/strong\u003e . Axles become under load during aggressive driving, track cornering, very slippery surfaces or when driving over curbs – and this happens more often than most people realise.\u003c\/p\u003e\n\n\u003ch2 data-start=\"738\" data-end=\"783\"\u003e \u003cstrong data-start=\"741\" data-end=\"783\"\u003eHow does Wavetrac improve performance?\u003c\/strong\u003e\n\u003c\/h2\u003e\n\n \u003cp data-start=\"785\" data-end=\"898\"\u003eWe won't go into torque distribution ratios or the theory of ATB locks here. Let's focus on the practical implications.\u003c\/p\u003e\n\n\u003ch3 data-start=\"900\" data-end=\"983\"\u003e \u003cstrong data-start=\"904\" data-end=\"983\"\u003eConventional gear lock (OEM, Quaife, MF, OBX, Truetrac, Torsen, etc.)\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp data-start=\"984\" data-end=\"1294\"\u003e You’re on track day and while cornering, the inside rear wheel hits a curb and momentarily loses traction. This is normal in track driving. The problem is that \u003cstrong data-start=\"1127\" data-end=\"1186\"\u003eduring these brief moments, no traction is being transferred to the other wheel\u003c\/strong\u003e – no power is going to the wheel that is holding on. Sprocket locks \u003cstrong data-start=\"1239\" data-end=\"1281\"\u003erequire load on both axles\u003c\/strong\u003e to work.\u003c\/p\u003e\n\n\u003cp data-start=\"1296\" data-end=\"1308\"\u003e As a result: \u003c\/p\u003e\n\n\u003cul data-start=\"1309\" data-end=\"1412\"\u003e\n\n\u003cli data-start=\"1309\" data-end=\"1339\"\u003e\n\n\u003cp data-start=\"1311\" data-end=\"1339\"\u003e the draw is momentarily interrupted \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1340\" data-end=\"1371\"\u003e\n\n\u003cp data-start=\"1342\" data-end=\"1371\"\u003e power is transmitted unevenly \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1372\" data-end=\"1412\"\u003e\n\n\u003cp data-start=\"1374\" data-end=\"1412\"\u003e The exit from the curve is unpredictable.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3 data-start=\"1414\" data-end=\"1447\"\u003e \u003cstrong data-start=\"1418\" data-end=\"1447\"\u003eSame situation with Wavetrac\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n \u003cp data-start=\"1448\" data-end=\"1666\"\u003eWavetrac's \u003cstrong data-start=\"1459\" data-end=\"1501\"\u003epatented cam device\u003c\/strong\u003e prevents loss of traction when the inside wheel is lightened. The mechanism \u003cstrong data-start=\"1563\" data-end=\"1602\"\u003ecreates a load inside the differential\u003c\/strong\u003e to compensate for the lost traction and directs torque to the holding wheel.\u003c\/p\u003e\n\n\u003cp data-start=\"1668\" data-end=\"1678\"\u003e Result: \u003c\/p\u003e\n\n\u003cul data-start=\"1679\" data-end=\"1822\"\u003e\n\n\u003cli data-start=\"1679\" data-end=\"1731\"\u003e\n\n\u003cp data-start=\"1681\" data-end=\"1731\"\u003e smoother and more continuous power transfer when cornering \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1732\" data-end=\"1758\"\u003e\n\n\u003cp data-start=\"1734\" data-end=\"1758\"\u003e better output speed \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1759\" data-end=\"1789\"\u003e\n\n\u003cp data-start=\"1761\" data-end=\"1789\"\u003e more predictable handling \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1790\" data-end=\"1822\"\u003e\n\n\u003cp data-start=\"1792\" data-end=\"1822\"\u003e overall faster car\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 data-start=\"1829\" data-end=\"1844\"\u003e \u003cstrong data-start=\"1832\" data-end=\"1844\"\u003eAdditional benefits\u003c\/strong\u003e \u003c\/h2\u003e\n\n\u003cul data-start=\"1846\" data-end=\"2501\"\u003e\n\n\u003cli data-start=\"1846\" data-end=\"2106\"\u003e\n\n\u003cp data-start=\"1848\" data-end=\"2106\"\u003e \u003cstrong data-start=\"1848\" data-end=\"1899\"\u003ePatented carbon fiber bias plate for pinions\u003c\/strong\u003e\u003cbr data-start=\"1899\" data-end=\"1902\"\u003e In other gear locks, the pinions rotate within the frame, causing friction and locking efficiency to change over time. In Wavetrac, performance remains consistent thanks to carbon fiber bias plates. \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2108\" data-end=\"2277\"\u003e\n\n\u003cp data-start=\"2110\" data-end=\"2277\"\u003e \u003cstrong data-start=\"2110\" data-end=\"2146\"\u003ePatented Wave Profile construction\u003c\/strong\u003e \u003cbr data-start=\"2146\" data-end=\"2149\"\u003eEliminates the near-zero-load pull-out that plagues all other ATB-type gear locks. \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2279\" data-end=\"2368\"\u003e\n\n\u003cp data-start=\"2281\" data-end=\"2368\"\u003e \u003cstrong data-start=\"2281\" data-end=\"2308\"\u003eARP bolts throughout\u003c\/strong\u003e\u003cbr data-start=\"2308\" data-end=\"2311\"\u003e Excellent strength and reliability even in tough use. \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2370\" data-end=\"2452\"\u003e\n\n\u003cp data-start=\"2372\" data-end=\"2452\"\u003e \u003cstrong data-start=\"2372\" data-end=\"2404\"\u003e9310 steel gears\u003c\/strong\u003e\u003cbr data-start=\"2404\" data-end=\"2407\"\u003e Machined or forged steel frame in use. \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2454\" data-end=\"2501\"\u003e\n\n\u003cp data-start=\"2456\" data-end=\"2501\"\u003e \u003cstrong data-start=\"2456\" data-end=\"2501\"\u003eDesigned and manufactured in the USA\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-start=\"2503\" data-end=\"2556\"\u003e \u003cstrong data-start=\"2503\" data-end=\"2556\"\u003eWAVETRAC: Smooth is Fast – Smooth is speed.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2 data-start=\"2563\" data-end=\"2603\"\u003e \u003cstrong data-start=\"2566\" data-end=\"2603\"\u003eIdeal for street and track riding\u003c\/strong\u003e\n\u003c\/h2\u003e\n\n\u003cp data-start=\"2605\" data-end=\"2844\"\u003e Wavetrac is ideal for \u003cstrong data-start=\"2637\" data-end=\"2671\"\u003ehigh-performance street cars\u003c\/strong\u003e that are also used on the track. It is highly durable, yet \u003cstrong data-start=\"2741\" data-end=\"2775\"\u003eunobtrusive in normal driving\u003c\/strong\u003e , and does not interfere with stability control or traction control systems.\u003c\/p\u003e\n\n \u003cp data-start=\"2846\" data-end=\"2882\"\u003eOn the track and in fast street driving: \u003c\/p\u003e\n\n\u003cul data-start=\"2883\" data-end=\"3039\"\u003e\n\n\u003cli data-start=\"2883\" data-end=\"2922\"\u003e\n\n\u003cp data-start=\"2885\" data-end=\"2922\"\u003e both wheels drive efficiently \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2923\" data-end=\"3003\"\u003e\n\n\u003cp data-start=\"2925\" data-end=\"3003\"\u003e no understeer or “pushing” caused by traditional clutch locks \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"3004\" data-end=\"3039\"\u003e\n\n\u003cp data-start=\"3006\" data-end=\"3039\"\u003e neutral and controlled driving behavior\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-start=\"3041\" data-end=\"3189\"\u003e Wavetrac outperforms other gear locks because \u003cstrong data-start=\"3089\" data-end=\"3146\"\u003eit does not lose traction when one axle becomes light\u003c\/strong\u003e – a situation that is common in hard driving.\u003c\/p\u003e\n\n\u003ch2 data-start=\"3196\" data-end=\"3243\"\u003e \u003cstrong data-start=\"3199\" data-end=\"3243\"\u003eSmooth power transfer at the limits of grip\u003c\/strong\u003e\n\u003c\/h2\u003e\n\n\u003cp data-start=\"3245\" data-end=\"3456\"\u003e One of the most underrated advantages of Wavetrac is its \u003cstrong data-start=\"3296\" data-end=\"3363\"\u003eextremely smooth and predictable power delivery at the limits of traction\u003c\/strong\u003e . The patented design provides smooth power transfer exactly when you need it most: \u003c\/p\u003e\n\n\u003cul data-start=\"3458\" data-end=\"3617\"\u003e\n\n\u003cli data-start=\"3458\" data-end=\"3493\"\u003e\n\n\u003cp data-start=\"3460\" data-end=\"3493\"\u003e in the middle of a curve at the limit of grip \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"3494\" data-end=\"3531\"\u003e\n\n\u003cp data-start=\"3496\" data-end=\"3531\"\u003e when balancing a car with gas \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"3532\" data-end=\"3617\"\u003e\n\n\u003cp data-start=\"3534\" data-end=\"3617\"\u003e when entering a corner a little too hard and quickly re-applying the gas\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n \u003cp data-start=\"3619\" data-end=\"3809\"\u003eAlthough these situations are partly driver-specific, \u003cstrong data-start=\"3672\" data-end=\"3703\"\u003ethe difference is clearly felt behind the wheel\u003c\/strong\u003e .\u003cbr data-start=\"3704\" data-end=\"3707\"\u003e \u003cstrong data-start=\"3707\" data-end=\"3784\"\u003eWavetrac makes you faster because it gives you the confidence to ride harder.\u003c\/strong\u003e\u003cbr data-start=\"3784\" data-end=\"3787\"\u003e Smoothness is speed.\u003c\/p\u003e\n\n\u003ch2 data-start=\"3816\" data-end=\"3831\"\u003e \u003cstrong data-start=\"3819\" data-end=\"3831\"\u003eFit\u003c\/strong\u003e\n\u003c\/h2\u003e\n\n\u003cp data-start=\"3833\" data-end=\"3925\"\u003e This Wavetrac differential fits a BMW \u003cstrong data-start=\"3874\" data-end=\"3891\"\u003e215 axle\u003c\/strong\u003e with a bolt-on OEM ring gear: \u003c\/p\u003e\n\n\u003cul data-start=\"3927\" data-end=\"3985\"\u003e\n\n\u003cli data-start=\"3927\" data-end=\"3947\"\u003e\n\n\u003cp data-start=\"3929\" data-end=\"3947\"\u003e \u003cstrong data-start=\"3929\" data-end=\"3945\"\u003eBMW E9X 335i\u003c\/strong\u003e \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"3948\" data-end=\"3968\"\u003e\n\n\u003cp data-start=\"3950\" data-end=\"3968\"\u003e \u003cstrong data-start=\"3950\" data-end=\"3966\"\u003eBMW E39 540i\u003c\/strong\u003e \u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"3969\" data-end=\"3985\"\u003e\n\n\u003cp data-start=\"3971\" data-end=\"3985\"\u003e \u003cstrong data-start=\"3971\" data-end=\"3985\"\u003eBMW E52 Z8\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-start=\"3987\" data-end=\"4065\"\u003e Mediation: \u003cstrong data-start=\"3996\" data-end=\"4008\"\u003er = 2.81\u003c\/strong\u003e\u003cbr data-start=\"4008\" data-end=\"4011\"\u003e \u003cstrong data-start=\"4023\" data-end=\"4065\"\u003eBolted Ring Gear\u003c\/strong\u003e\u003c\/p\u003e","brand":"QT Parts","offers":[{"title":"Default Title","offer_id":51963766997339,"sku":"30.309.170WK","price":1730.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/30.309.170WK30.309.170WK-2_2_grande_3faf39aa-c5a5-46ea-b935-97fa9031a29e.png?v=1766944785","url":"https:\/\/www.qtparts.fi\/en-gb\/products\/wavetrac-atb-lsd-lukkopera-e9x-335i-e39-540i-e52-z8-215k-r-2-81-bolted-oem-ring-gears","provider":"QT Parts","version":"1.0","type":"link"}