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Complex Seven Industries

Checkout our selection of apparel and accessories. Made from quality material to ensure longevity.

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Complex Seven Industries

Specializing in providing superior customer service for BMW performance parts, and apparel

From Our Blog

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Our Newest Partnership: MASATA

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We stand behind our products and work with some of the best brands in the automotive industry. In doing so, we can offer our five-year warranty on all parts sold. In staying in this same vein, we are proud to partner with MASATA.   Read more

Long Term On3 BMW N54 335i Single Turbo Review

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It's been about three years since I've had the On3 BMW N54 single turbo kit installed on my E90 335i. Through those years, the price of N54 335i's has tanked quite a lot. So looking at a cost-effective kit such as the On3 N54 single turbo kit looks a bit tempting. Since most kits cost more than you paid for the car. I want to share my experience owning this kit for an extended time.   Read more

BMW N54 On3 Single Turbo Review

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 I purchased the On3 Performance BMW 335i N54 Top Mount Single Turbo System (vband) back in January 2018. No sponsorship or discount, so all my own money and no bias. The first thing I can say about the experience is the shipping was incredibly fast. Considering the stories that’s been floating around about other vendors in the same marketplace. It came to my doorstep in about 5 days from payment.   Read more

Warnings of Cheap BMW 335i For Sale

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You might look through Facebook Marketplace, Craigslist, or your local dealerships and notice you can find a nice-looking BMW N54 335i for a low price. Now at such low-price levels, you must keep in mind that they require a lot of attention. But be warned, there is an 85% chance you will be buying a dud of a car. Simply, because the prior owner did not follow a maintenance schedule.   Read more

BMW N54 Twin Turbos vs Single Turbos

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You've gotten your BMW N54 powered car and are eager to up the boost and turn it into a street slayer. Many go the route of maxing out the stock twins, then get upgraded hybrid twins or a single turbo setup. Your best move is to go straight to a single turbo setup. The main reasons are its easier maintenance, ease on your drivetrain, and a wider choice of turbos.   Read more

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