The K&N Motorcycle Air Filter RO-5010 is intended to offer a guaranteed boost in horsepower while also improving throttle performance and the sound of your engine.The filter boasts a free-flowing, high-density tube made of polyethylene material, and is easy to install.K&N Motorcycle Air Filter RO-5010 SpecificationsFilter Material: Cotton GauzeHeight: 3.125 in (79 mm)Inner Wire: NoInside Diameter: 3.687 in (94 mm)Outside Diameter: 4.687 in (119 mm)Top Style: OpenTop Material: NoneAir Filter Shape: RoundFlanges: NonePackage Contents: 1 Air FilterPackage Quantity: 1Warranty: 1,000,000 Miles/10 YearWashable: YesProduct Style: Round Air FilterBase Outside Diameter: 4.687 in (119 mm)Top Outside Diameter: 4.687 in (119 mm)Weight: 0.6 lb (0.2 kg)Filter Re-Oiling Amount: 0.32 oz (9 ml)Product Box Height: 3.5 in (89 mm)Product Box Length: 6.31 in (160 mm)Product Box Width: 6.56 in (167 mm)