DDM 1 Inch Tall Velocity Stack, with Gasket

DDM 1 Inch Tall Velocity Stack, with Gasket

30.5mm center to center bolt hole spacing. Longer intake tract for improved performance. 1" height. Diameter is 1.75" (44mm). Inner hole is .75" in diameter. 

Fits Zenoah and Chung Yang motors with Walbro WA / WT / WYK style carburetors.