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15-18 BMW 420i
All components combine to provide a more efficient airflow path whilst maintaining low inlet temperatures
Prepreg Carbon Scoop
Eliminates end-tank failure at elevates boost levels
Wavetrac Differential - Mini R53 | R56 Cooper S (Manual) B9 15-18 BMW 420iSimply put Wavetrac is the only gear diff on the market that does not lose all drive when one axle is unloaded. Axles become unloaded in aggressive driving, track cornering, extremely slick surfaces, etc. It happens more than most people realise. We wont go into torque bias ratios or the concept of how torque biasing diffs work at this point. Lets get to how the Wavetrac affects performance: For example, you have a conventional gear diff (OEM, Quaife,
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