4 x 54mm Premium Performance Motorcycle POD Air Filter Dirt Pocket Bike ATV Pit Bike Free US delevery,dispatch within 1-2 days,delivery on 3-6 working days ! Inside Diameter: 2.13" (54mm), Overall Height: 3.5" (88mm) Outside Diameter at Widest Point: 3"(76mm) Outside Diameter at Top: 2"(50mm) Universal fitment