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.

30.5mm center to center bolt hole spacing.

Dual outer grooves for sturdy clamp mounting.

Fits Walbro WA / WT / WYK style carburetors.

If using with a WT-style carburetor that has a butterfly choke, the center hole will need to be slightly enlarged.

The "af310" v-stack is a better choice in these cases, as the center hole is wide enough to accommodate the choke plate.