Pipercross MPX High Performance Air Filter to fit Honda CBR 1000 Fireblade 04-07. A and R Racing Services. For all your Road, Racing & Trackday needs. Pipercross MPX Series High Performance Air Filter. Pipercross motorcycle air filters have been repeatedly tested on many different motorcycle configurations and the results speak for themselves. An increase in both power and torque without the need to modify fuelling, all by simply replacing the air filter unit. You can visit our Race Support Vehicles at BEMSEE, N GRRC & Thundersport GB race meetings plus all Motorcycle Track Days at Castle Combe. Come along and say hello! 3 Stream Business Park. Made with love by.