The highly rigid and light weight design

These are more durable than carbon fiber and plastic

Discontinued

it provides much needed oxygen and nutrients to tired muscles

DNA Air Filters - Stage 3 Air Filter for BMW R nineT - Billet Top Options:Air Filter - Stage 3 The highly rigid and lightNew DNA High Performance Stage 3 Kit specifically designed for the BMW R nine T. Internal diameter design matches the R nine T throttle body. Venturi intake design smoothens and improves the air flow. No need to remove the air box! Only the connecting tubes, from the air box to the throttle bodies. Filters designed not to interfere with the riders boots! Racing, custom and road use. This Stage 3 application is developed for race & track use and in