DDM velocity stack with 5/8" inner diameter.
This adapter allows you to use aftermarket clamp-style air filters with 1 3/4" inner mounting diameter.
Precision machined for smooth air flow. 3/4" height yeilds better low end power than stock. Dual outer grooves for sturdy clamp mounting.
Fits Walbro WA / WT / WYK style carburetors.

