Tall Velocity Stack Kit, Part #107-38

Tall Billet Aluminum velocity stack. Can fit 22-49cc, 2-stroke engines, excluding the 47/49cc reed inducted pocket bike engines (refer to part #107-46 for those engines). Bolt Hole Spacing: 30.5mm. Outer Diameter: 44mm. Inner Diameter: 19mm. Height: 27.8mm.