the factory systems start to show their limitations

Supertech valve spring kits are a trusted choice for a variety of applications

**94mm Pistons include skirt coating to ensure compatibility with the Alusil Factory Bores

The tag team at Toyota and BMW were already ahead of the game by fitting the 2019+ BMW M340i /Z4 with an external liquid-to-air transmission cooler

-Cast aluminum ESS intake manifold

BMW M50 M52 S50 S52 Pro-Series Turbo Build Kit Kit:Level 2 the factory systems start toThe 5150 AutoSport Pro Series Turbo Build Kit: An all inclusive arsenal of internals custom assembled to prepare your BMW M50 M52 S50 S52 engine for high horsepower, turbocharged performance. A Kit for Every Build and Budget There is no one size fits all, which is why we offer several stages of upgrade. Through careful selection and pairing of components, we are able to offer customers a variety of kit options, catering to each build and budget.