35mm Universal fit "Bullet" Air Filter - Motorcycle Scooter Pocket Bike - Silver (Model 10400-05) New Performance Air Filter 35mm for Scooters, Motorcycles, ATVs, Pocket Bikes High Air Flow with Excellent Filtration Materials. Added Value: Comes with Clamp, Easy to Install and Maintain. Fits on 34mm, 35mm and 36mm Diameter Mounting Flanges Pliable flanges absorb vibration and can be stretched up to 1/16 In. to fit in-between sizes.