The TPI "Low-Boy" valve is a flush mounting version which is 2 5/8" square overall.
Available in: Package of 1 Low-Boy - Black with Filter
Speed shops all across the snow belt are delighted with the results they’re seeing installing the new TPI Low Boy adjustable intake valves from Thunder Products. This tight-clearance version of the adjustable TPI valves first previewed in the September 2002 issue of SnowTech Magazine has proven to be even more popular than the original version.
The TPI Low Boy mounts into the airbox, and allows you to open or close the added intake area to provide “air jetting”; more or less air intake surface area with the sliding “gate” on the valve.