Filter For Yamaha YZFR1 2007 2008 Fit For Yamaha R1 YZF-R1 YZFR1 2007 2008 box inner installation space Slides into filter compartment without or extra fitting pieces Blocks tiny road dust debris from flowing into engine passages during track riding Formed with thick interwoven layers stiff internal support skeleton Fits box inner outline to cover all airflow areas