GOOFIT Intake Manifold Carburetor Spacer Adatper Plate for 2-stroke 47cc(40-6)/49cc(44-6) Pocket Bike intake pipe length: 55mm intake pipintake pipe width: 40mm install Aperture: 38mm Arrival within 1-2 days (Sold by GOOFIT and Fulfilled by Amazon) Arrival within 7-15 days (Ships from and sold by GOOFIT)