How often have you said to yourself that your airplane would be perfect if it just had more horsepower? Well, it might just be as simple as changing your exhaust system.

Pipes That Perform TM ……Affordable Price

Dane Wagner, Sr., President of Leading Edge Exhaust Systems, LLC, located in Anchorage, Alaska is very proud of LEES´ new trademark, “We make You Fly”. He says “We Make You Fly” is indicative of their products.

An excellent example is the PA-18 150/160 and 180Hp exhaust systems. Better rate of climb, increasing RPM´s, faster cruise speeds and very short take distances from high mountain strips; all this with heavy gross loads and obstacle clearance. These are a few of LEES´ exhaust systems performance attributes. All these positive features yet the engine burns less fuel. Dane Sr., or D1, as he´s known in the shop believes LEES has the best pipes and warranty in the business.

D1 says, LEES recently gained FAA approval for the Piper PA-12 150/160 Hp short and long mount models. The PA-12 180Hp model was recently approved too. Our new a PA-12 exhaust system is very similar to our Super Cub exhaust that has undergone extensive dyno testing at LY-CON Engine Rebuilding located in Visalia, California. Hundreds of  PA-18 exhaust systems have been sold worldwide. The Lycoming 150 Hp A2B gained 16 Hp or a total of 168 Hp, the 160 Hp B2B produced 173 Hp, 13 more Hp while the power house O360A1A pulled 202 hp, 22 more Hp than the stock OEM exhaust system. Brake specific fuel consumption, BSFC, came down while Hp and torque went up. You can read all of the dyno test results on our  “What´s News? ” page and see, even with LEES complete exhaust system installed, on a Lycoming O360A1A, the engine pulled 12 more Hp than straight pipes. The LY-CON dyno testing also debunks the myth that removing muffler baffles increases horsepower and torque, at least in LEES´s case it´s different. Removing LEES patented muffler baffles caused a loss of five horsepower and ten pound feet of torque.

The PA-12 is fast becoming an outstanding Alaska Bush Plane. The PA-12 has a cavernous cabin, relatively speaking, good performance and affordable pricing. These are a few of its attractions. Now outstanding performance will make it another highly sought after Piper product with a new energetic life. Couple this with increased performance and an exciting new 10 year or 1000 hour limited warranty and you have the best of both worlds.

The exhaust system is the same layout as the ever popular Super Cub exhaust. The only revision to the pipes is the long mount risers that have been extended aft to accommodate the longer engine mount. The PA-12 Short mount models are identical to the PA-18 Super Cub.

LEES recently developed a new PA-12 exterior muffler design while still utilizing their patented heavy duty muffler baffles. The new PA-18 RMW, Revised Muffler Weldment, requires only one outer ring, (OR) shroud support. All of the other air deflectors have been removed. They were attached at their ends using on “parallel” to the grain weld. The new OR is attached to the can using “transverse” to the grain fillet welds.  The new OR lets air merge from the R/H side and L/H side into the main cabin heat outlet. If rear seat heat is installed you simply remove the cap from the typical lower R/H scat fitting and attach the rear seat heat scat hose, very simple….very efficient. The carburetor heat source is produced from a brand new part, the Carburetor Heat Flange (CAHF), and is no longer derived from the muffler. The new CAHF attaches to the right hand aft riser.

Using LEES´s very unique U.S. Patented designs EGT´s and CHT´s are much lower and also better balanced. The cylinder back pressure is much lower and all four cylinders equally balanced to within .05PSI; a vast improvement over stock. At Leading Edge Exhaust Systems, LLC our “Equal Length” exhaust systems are designed with performance and ease of maintenance as a top priority as well as an outstanding warranty. Our PA-18 STC eliminates the AD which required inspections of the muffler every 100 hours for the first 1000 hours and every 50 hours thereafter. You can download the AMOC, Alternate Means of Compliance, issued by the Atlanta ACO, on our Website

We use the term “Equal Length” instead of the buzzword “Tuned” for good reasons. For more information read our technical paper “Tuned Versus Equal Length Pipes”. Just click on the Starburst at the bottom of each product page:

The FAA/PMA approved PA-12 150/160Hp short and long mount RMW/CAHF exhaust systems are priced at $4395.00 and $4495.00 respectively; both systems have a 1000 hour/ 10 year warranty. The PA-12 180Hp short mount with the standard issue muffler, with a 1 year unlimited hour warranty, and is priced at $4795.00. The 180Hp short mount RMW/CAHF is priced at $4895.00 and has a 1000 hour/10 year warranty.

All of LEES´ Piper exhaust systems are  supplied with new exhaust cylinder gaskets and nuts for a nominal charge. Pipes are brushed to a satin finish. If you want them polished to a chrome look add $200.00. 15” is the standard PA-18 tailpipe length and is included in the price. Tailpipes are ceramic coated with a high gloss finish. If you have a PA-18 and have a belly pod installed and want the long 19.5”tailpipe you need to include it at the time you place your order. If not included at time of the order there will be a $250.00 charge to fabricate one.

Please note; all of our sales are sold as customer specific sales. Due to popularitry and demand of LEES’ products we do not stock any of the products we manufacture. The down payment is required in order to procure materials required to build LEES’ exhaust systems. Therefore there are no refunds on down payments.

For further information:
Call in orders1-888-534-3433
Tech line 1-907-248-1188

"Just exceptional "

climbs like crazy and free of vibations !!!

Joel Francoeur full review

New – July 2019 -Power Flow Systems, Inc. acquires assets of Leading Edge Exhaust, LLC.July 15th 2019

July 14, 2019: For twenty years, Power Flow Systems, Inc. has been providing high performance exhaust systems for many iconic General Aviation aircraft. There are now well over 5,500...



Cessna 185F/ IO-520D STC Approved!!August 27th 2013

Attention Cessna 180, 182 and 185 owners!! Cessna 185F/ IO-520D STC Approved!! We were notified by the Anchorage FAA/ACO office 185 STC was issued today, August, 19, 2013! At this...



Noise test data for the Cessna 180, 182 and 185 Aircraft has been accepted.July 4th 2013

Attention Cessna 180, 182 and 185 owners!! LEES’ noise test data for the Cessna 180, 182 and 185 Aircraft has been accepted. It is being sent to FAA AEG  for final review. The noise...