3 1/2" x 4" Air Filter (2 1/4" ID Tapered Chrome) Bare Chassis The overall rim diameter is

The overall rim diameter is 3

Available in several sizes to fit various karts and foot sizes:

changing your sprocket is rapid and simple

If you're looking for a complete engine kit

3 1/2" x 4" Air Filter (2 1/4" ID Tapered Chrome) Bare Chassis The overall rim diameter isAir Filter with 3 1 2" x 4" Dimension. This air filter is designed to fit carburetors with an air intake venturi diameter of 2 1 4" ID with a tapered chrome end plate. Each air filter comes with a premium fabric air filter baffle matrix, with mesh to reinforce and support the baffles and promote maximum air flow. Each filter is sold with the attachment clamp as well, as pictured.