Knallhart Motorsports

Welcome to Knallhart Motorsports

Your one stop shop for your 2.7t swap

B6 Chassis to 2.7t Adapter Harness


($5.00 shipping)

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An affordable option for the most important part of the your 2.7t swap. This harness adapter is a straight plug and play with provisions for cruise control, air conditioning, and reverse light switch. Get the complete 2.7t swap harness here.

2.7t swapped B6 A4 First Drive

This was the first drive with the 2.7t swap before a lot of the little kinks were worked out. Night and day difference compared to the 1.8t.

Knallhart's Blog

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About Us


Being a car enthusiast has been a life long hobby. From Japanese, American, and now European, we have been a part of many growing, and already established, motorsport communities. So often we have seen performance parts and car tuning available for platforms that seem to be just out of economic reach for the average enthusiast. We look to change that with our affordable products.


With over 30 year of combined automotive experience, we know what our customers look for in products. We apply our knowledge to make durable products and use our experience to ensure we provide the best price without sacrificing quality.


Contact Us

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Better yet, see us in person!

We love our customers, so feel free to visit during normal business hours.

Knallhart Motorsports

Hesperia, California, United States