Raise the power and reduce the fuel consumption in our preferred rpm range.The acceleration is also greatly improved. We run these on all of our gas engines, especially the 4-stroke kind, let it be radial, opposed twin, inline or single.This will help keep the engine from leaning out in the air due to rapid changes in environmental pressure/ draft.
Toni Clark 18mm Aluminum - 32mm bolt pattern, 18mm opening at carb, 45mm length, 30mm opening at mouth, comes with bolts - fits all Moki, Kolm and Walbro 225 outfitted Valach
Aeroscale 19mm Aluminum red - 32mm bolt pattern, 19mm opening at carb, 54mm length, 44mm opening at mouth - fits all Moki, Kolm and Walbro 225 outfitted Valach
Aeroscale 29mm Aluminum red - 46mm bolt pattern, 29mm opening at carb, 80mm length, 67mm opening at mouth - for large carburetors (3W, DA and others)