Replacement for 50cc 70cc 90cc 110cc 125cc 140cc 150cc 200cc 250cc 2-strokes or 4-strokes engines,GY6 engines,for most Off-road motorcycle, atv, quad, scooter, go kart,moped,pit bike,dirt bike,racing bike,super bike and other bike. Replacement for 49cc-80cc engine motor motorized motorised bicycle,for 2-stroke 47cc 49cc dirt pit trail bike and pocket bike.It also compatible with Yamaha Suzuki and other brand bikes. Universal fits for most motorcycle air filter with 44mm/45mm/46mm engine inlet.Easy to fit,made of high quality materials,the air filter is durable in use for a long time,washable no oil design. The air filter particulate matter from entering the engine's cylinders to ultimately increase horsepower,torque and improve the gas mileage.It will allow your bike to do deep breath and generate much more power,prolong the engine life. Warranty:We are always available to help our customers.If you are not satisfied with the order,please leave us a message.Wish you have a happy shopping experience,we are committed to providing the best service.