{"product_id":"wavetrac-differential-for-ford-fiesta-st180-mk7-1-6t-ecoboost-1","title":"Wavetrac Differential For Ford Fiesta ST180 (MK7) 1.6t EcoBoost","description":"\u003cdiv data-ux=\"Grid\" class=\"x-el x-el-div c1-1 c1-2 c1-s c1-4g c1-4h c1-70 c1-1e c1-4j c1-4k c1-4l c1-b c1-c\"\u003e\n\u003cdiv data-ux=\"GridCell\" class=\"x-el x-el-div c1-1 c1-2 c1-4g c1-1u c1-4z c1-78 c1-74 c1-o c1-l c1-4o c1-k c1-b c1-c\"\u003e\n\u003cdiv data-ux=\"Block\" class=\"x-el x-el-div c1-1 c1-2 c1-b c1-c\"\u003e\n\u003cp data-ux=\"Text\" data-aid=\"PRODUCT_DESCRIPTION_RENDERED\" data-typography=\"BodyAlpha\" class=\"x-el x-el-p c1-1 c1-2 c1-2d c1-2e c1-3s c1-1e c1-q c1-6i c1-b c1-21 c1-c c1-2i\"\u003e \u003c\/p\u003e\n\u003cp\u003eSimply put - \u003cstrong\u003eWavetrac is the only gear diff on the market that does not lose all drive when one axle is unloaded.\u003c\/strong\u003e Axles become unloaded in aggressive driving, track cornering, extremely slick surfaces, etc. It happens more than most people realise.\u003c\/p\u003e\n\u003cp\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\/p\u003e\n\u003cp\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.\u003c\/p\u003e\n\u003cp\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\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOther benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\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\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-ux=\"Grid\" class=\"x-el x-el-div c1-1 c1-2 c1-s c1-4g c1-4h c1-70 c1-1e c1-4j c1-4k c1-4l c1-b c1-c\"\u003e\n\u003cdiv data-ux=\"GridCell\" class=\"x-el x-el-div c1-1 c1-2 c1-4g c1-1u c1-4z c1-8w c1-m c1-o c1-l c1-4o c1-k c1-b c1-c\"\u003e\n\u003ch2 data-start=\"372\" data-end=\"423\"\u003e1. Audible \u003cem data-start=\"389\" data-end=\"410\"\u003eClicking \/ Clunking\u003c\/em\u003e Under Load\u003c\/h2\u003e\n\u003cp data-start=\"424\" data-end=\"897\"\u003eMany owners across different vehicles fitted with Wavetrac LSDs report a \u003cstrong data-start=\"497\" data-end=\"530\"\u003edistinct click or clunk noise\u003c\/strong\u003e under certain conditions (e.g., during medium throttle acceleration or light decel), especially when torque is first applied or released. Some describe it as a \u003cem data-start=\"691\" data-end=\"721\"\u003esingle audible click or snap\u003c\/em\u003e from the driven axle side.\u003cbr data-start=\"748\" data-end=\"751\"\u003eThis isn’t necessarily a mechanical failure, but \u003cstrong data-start=\"800\" data-end=\"858\"\u003eit’s frequently reported and a common cause of concern\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2 data-start=\"1119\" data-end=\"1171\"\u003e2. Perceived \u003cem data-start=\"1139\" data-end=\"1169\"\u003eTightness \/ Engagement Noise\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"1172\" data-end=\"1559\"\u003eOn other forums (even on vehicles like Porsches), owners notice that the diff can feel “tight” at low speeds, with noises on deceleration or when starting from standstill.\u003cbr data-start=\"1343\" data-end=\"1346\"\u003eThis can feel like a \u003cem data-start=\"1367\" data-end=\"1394\"\u003emechanical clunk or grind\u003c\/em\u003e, but most chatter suggests it’s due to \u003cstrong data-start=\"1434\" data-end=\"1467\"\u003epreload and backlash settings\u003c\/strong\u003e or the way the Wavetrac locks up when torque changes.\u003c\/p\u003e\n\u003ch2 data-start=\"1773\" data-end=\"1827\"\u003e3. Install-Related Fitment \/ Adjustment Issues\u003c\/h2\u003e\n\u003cp data-start=\"1828\" data-end=\"1927\"\u003eWhile not a fault of the diff itself, \u003cstrong data-start=\"1866\" data-end=\"1893\"\u003einstallation challenges\u003c\/strong\u003e come up in community discussions:\u003c\/p\u003e\n\u003cul data-start=\"1929\" data-end=\"2276\"\u003e\n\u003cli data-start=\"1929\" data-end=\"2106\"\u003e\n\u003cp data-start=\"1931\" data-end=\"2106\"\u003eSome forums mention difficulty achieving correct \u003cstrong data-start=\"1980\" data-end=\"2018\"\u003egear backlash and preload settings\u003c\/strong\u003e, which if off can lead to uneven wear or noise. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2107\" data-end=\"2276\"\u003e\n\u003cp data-start=\"2109\" data-end=\"2276\"\u003eOther posts on different vehicles describe occasional \u003cstrong data-start=\"2163\" data-end=\"2186\"\u003eaxle\/fitment issues\u003c\/strong\u003e with Wavetrac units (e.g., axle stub fit problems).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e4. Rare \/ Isolated Component Failures (Anecdotal)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSome threads unrelated to Fiestas mention \u003cstrong data-start=\"2621\" data-end=\"2642\"\u003ebroken stub axles\u003c\/strong\u003e under wrench (e.g., in other cars), though it’s unclear if that was caused by the diff itself or other drivetrain stresses.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-ux=\"Block\" class=\"x-el x-el-div c1-1 c1-2 c1-b c1-c\"\u003e\n\u003ch4 role=\"heading\" aria-level=\"4\" data-ux=\"HeadingProduct\" data-aid=\"SIMILAR_PRODUCT_RENDERED\" data-typography=\"BodyBeta\" class=\"x-el x-el-h4 c1-1 c1-2 c1-2d c1-2e c1-7f c1-1w c1-1x c1-1e c1-q c1-e c1-fk c1-b c1-4w c1-6h c1-2i\"\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003c\/div\u003e","brand":"The Gearbox Centre","offers":[{"title":"Default Title","offer_id":55911395230022,"sku":null,"price":100.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/8792\/7110\/files\/Screenshot2026-02-02090026.png?v=1770022850","url":"https:\/\/the-gearbox-centre.myshopify.com\/products\/wavetrac-differential-for-ford-fiesta-st180-mk7-1-6t-ecoboost-1","provider":"The Gearbox Centre","version":"1.0","type":"link"}