For most Off-road motorcycle, atv, quad, scooter, go kart, moped, pit bike, dirt bike, racing bike, super bike and other bike. For mid-sized engines 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. It also fits Kawasaki Yamaha Suzuki and other brand bikes. Fit most Chinese import Pit / Dirt bikes, almost all of the bike brands from China, such as TaoTao, Buyang, Coolsport, Jonway, Znen, NST, BMX, Kazuma, Sunl, Roketa, AIM-EX etc. All of our parts are specially designed to exact standards, manufactured and tested to help deliver optimum performance, with lifetime warranty against manufacturer defect. Specifications: 100% brand new and high-quality performance air filter, angled neck. Color: black. Material: metal, plastic. Filter Element: Foam / Sponge. Inlet diameter: approx. 42mm / 1.65 inches. Has 2 layers of foam,