IT'S BACK!!

Now in Version 2

By popular demand, we resurrected and updated fxStein's original Monster Big Air kits!!!

Back in 2009 when the Second-Generation V-Max was released, a tuner named fxStein developed an air intake system that eliminated the restrictive OEM air box and replaced it with 4 individual velocity stacks. Each stack was designed to hold its own individual air filter. It was known as the "Mod of all mods" for the intake system. Well, time passes and priorities change. We sold all of our stock of them and in time the kits disappeared. Often, I still get request for this mysterious intake system, and nobody knows how to get it. It's unobtanium, until now. We resurrected the old stacks and made some improvements and sold them as the Gurued Big Air Stack or GBA. Not all bikes are exactly alike. After getting feedback about the GBA-V1 stacks, we made some refinements to allow for manufacturing tolerances of the throttle bodies. The GBA-V2 stack has been updated to fit better and we increased the wall thickness to accommodate drilling and tapping for NOS nozzles. This kit includes 4 CNC machined aluminum velocity stacks. Compared to the old stacks, the flange size was increased to make them stronger. We also made the flange thicker to accommodate the stock O-Ring as well as being able to use the OEM Velocity Stack bolts without them bottoming out.  We also modified the top neck and sized it to fit the HA-3094 air filter as the filter used in the original setup has been discontinued. Since we no longer carry K&N filters, you will need to order 4 separate air filters from K&N P/N HA-3094's elsewhere to complete this installation. You also need a 1/2" push-in filter for the crank case ventilation. Remember to re-use the bolts from the bottom OEM stacks and the O-Rings from under the stock air box.  

** NOTE - During installation of each stack, tighten the two bolts evenly making sure the stack inserts straight and true. Torque bolts to 8.7 ftlbs.