Features: 1.Fit Size: Inlet diameter of the motorcycle air filter is 42mm / 1.65in, it fits for most motorcycle air filter with 41mm / 42mm / 43mm engine inlet. 2.Applicable Chinese Bike : Fit for almost all of the bike brands from China, such as, replacement for TaoTao, replacement for Buyang, replacement for Coolsport, replacement for Jonway, replacement for Znen, etc. 3.Wide Application: Air cleaner fits most ATVs, quads, scooters, go karts, dirt bikes, racing bikes, superbikes and other bikes. Suitable for 50cc?90cc 110cc 125cc 150cc 200cc 250cc 2?stroke or 4?stroke engine, GY6 engine. 4.Function: Air filter can prevent abrasive particles from entering the engine cylinders, ultimately increasing horsepower, torsion and fuel consumption. 5.Advantage: Motorcycle air cleaner will allow your bike to take deep breaths and generate more power, extending the engine life. Using high quality materials, the air filter is durable in use for a long time. Specification: Item Type: Air Filter Material: ABS + Aluminum + Rubber Inlet Diameter: Approx. 42mm/1.65in Bend Angle: 45 Application: Replacing the air filter of a refurbished original car, preventing abrasive particles from entering the engine cylinders, ultimately increasing horsepower, torsion and fuel consumption Application: Universal fits for most motorcycle air filter with 41mm / 42mm / 43mm engine inlet. For most Offroad motorcycle, ATV, quad, scooter, go kart, moped, pit bike, dirt bike, racing bike, super bike and other bike. For 50cc-90cc 110cc 125cc 140cc 150cc 200cc 250cc 2-strokes or 4-strokes engines, GY6 engines. Fits most carburetors (PZ24 150cc and PZ30 CG 250cc etc) requiring a 42mm (1.65in) inside diameter opening. Replacement for Suzuki CB/CG and other brand bikes. Fits most Chinese import Pit / Dirt bikes, almost all of the bike brands from China, such as, replacement for TaoTao, replacement for Buyang, replacement for Coolsport, replacement for Jonway, replacement for Znen, replacement for NST, replacement for BMX, replacement for Kazuma, replacement for Sunl, replacement for Roketa, replacement for AIM-EX etc. Following motorcycle models are for reference only, please measure your carburetor's mouth outer diameter before you buy: Replacement for CB650 1979-1980 Replacement for GPZ1100 1983-1984 Replacement for KH400 (2 stroke)1976-1978 Replacement for KZ440 1980-1983 Replacement for KZ900A 1976-1977 Replacement for KZ1000 1977-1981 Replacement for Z1 /A/B-900 1973-1975 Replacement for Suzuki GT380/GT550 1977-1980 Replacement for Suzuki GS750, GS1000 1977-1979 Replacement for RD250, RD350 1973-1975 Replacement for RD400 1976-1978