Challenge Audi R8 V8 Prototype Exhaust Testing

Here is a quick rev video of one of our latest exhaust projects. This full stainless exhaust even includes vacuum controlled valves like the factory unit to seamlessly install into …

F10-M5-carbon-OEM-race-trunk4-lg-med

BMW F10 M5 / 5 Series OEM Carbon Race Trunk Released!

Designed, engineered, and manufactured in the USA, our OEM carbon race trunk is the perfect addition to your F10 5 series BMW. Each trunk is constructed by hand from 100% …

F30 Rear Exhaust

Challenge F30 335 Catback and HFC Downpipe Sound Clips

Challenge Sport catback Exhaust with Challenge downpipe with High Flow Cat. The downpipe added a good amount of grunt down low and in the midrange without adding any additional noise …