Compatibility: 110cc, 125cc, 140cc, Lifan YX Zongshen Pit Dirt Bikes. Compatible with all 110cc, 125cc, 140cc engines of Thumpstar, DHZ, Pitpro, Atomik, Pitpro with corresponding measurement. Fits XR50 CRF70 KLX BBR Apollo Thumpstar Braaap Atomic DHZ SSR Specifications: Engine side: inner diameter is 26mm, Manifold bolt eye-hole: 48mm, Air filter side: air: inner diameter is 34mm, outer diameter is 38mm. Package List: 1 x 26mm VM22 Carburetor, 1 x 38mm Air Filter, 1 x Intake Pipe Manifold, etc., you will get as the picture.