2013+ Honda CBR500R Superbike Airbox is a 2 piece system that replaces the stock OEM airbox with a set of oversize tapered velocity stacks with a removable 30 DPI foam race filter. Manufactured from high strength Fused Filament Carbon Fiber reinforced Nylon which makes them extremely strong, yet flexible and light weight! This system is good for 8% power increase with correct tuning Removable racing foam filter requires regular cleaning and oiling Designed for optimum air/fuel mixture at 9500 rpm Optional CCV Catch bottle (buy ours or create your own) Installs with original oem screws In order to maintain our extremely high standard of quality products, CarbonSmith VELOCITY STACKS are not available in mass quantities and are made to order. �Each KIT takes over 24 hours of print time and are MADE TO ORDER, therefore your patience is very much appreciated. PLEASE READ OUR TERMS & CONDITIONS BEFORE PURCHASING, THANK YOU!