Mercury Velocity stacks

This listing is for a set of Velocity stacks (3individual velocity stacks) for the 3 cylinder 2 stroke mercury outboard motor. will work on 1990s -2000s year model 40-60 hp 3 cylinder 2 stroke 3 carb mercury outboards. This product reduces turbulence into the carburetors and allows for better atomization of the fuel and air witch makes more power. We recommend increasing your main jet size by 2 numbers when installing this product due to the Velocity stacks and the way they operate they will lean out the fuel mixture on any motor they are installed on.

This product was tested in house with a gain of one tenth of a second quicker ET in 660ft straight line drag race, and a 1.4 mph net gain in top end speed.