Pipercross Race Spec Racing Air Filter to fit Honda CBR 1000 RR Fireblade 04-07. A and R Racing Services. For all your Road, Racing & Trackday needs. Pipercross Race Spec Power Racing Air Filter. The highest level of air flow for your race/trackday bike. Unique to Pipercross, the RACE SPEC air filters have a specification designed to maximise airflow and performance. Fuelling modifications are necessary (power commander/rolling road etc) to take advantage of the increased airflow and to prevent damage to the engine. 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.