4-into-1 Exhaust – AEIO/Stock Updraft



4-into-1 for Pitts S1* $1,467
4-into-1 for Skybolt/Eagle* $1,547
Smoke System Fittings $45 pair
Crankcase Vent Tube Included @ No charge
All bending is done in house with our own equipment. All of our exhaust systems are made with 321 Stainless. Each pipe is made from two pieces, a primary and secondary that slip fit together, there are no welded joints to crack. All pipes slip fit into the collector as well, this along with a slip fit connection on every pipe ensures freedom of movement with virtually no chance of any stress cracking. Both the cold air sump and 4 into 1 exhaust have proven to increase horsepower, combine them for even more HP! We test fit all systems with an engine and cowling to ensure a good fit with ample clearance between pipes and the sides so no cowl mods are needed, the only area where modification may be required is the exit area.

*Specify Spring gear or Bungee.