There is now a complete performance enhancing tuned exhaust option for the Cessna 180 / 185 Skywagon airframes equipped with Continental 470 / P-Ponk / Northpoint / 520 / 550 engines. 

Cessna 180 and 185 “Power Monster Cross Flow” TM

Bolt-On Horsepower, a complete replacement of your aircraft's original exhaust system and  FAA approved by STC for all Cessna 180 & 185 series aircraft. 

The Power Monster Cross Flow(PMCF) system has been in operation around the world for over 15 years.  Originally developed by Leading Edge Exhaust Systems (LEES) of Anchorage, Alaska for working airplanes that demand performance and reliability.  It is rugged and robust adding durability and safety for many flight hours.

In 2019 Power Flow Systems Inc., acquired the LEES assets and spent nearly three years re-engineering the original designs to improve manufacturability and overall quality.  Production of the "New & Improved" PMCF system launched in early 2021 and there are now well over 300 of the new systems installed and flying worldwide.  Power Flow is the sole manufacturer of these high-performance systems for the Cessna 180, 182 and 185 airframes.

For Pricing and Lead Times check the table below

**   Prices are for US and Canadian registered aircraft only. International customers may place an order online and will be contacted by Power Flow Systems, Inc. or a local authorized reseller regarding final pricing. 

Our standard system comes complete with everything required to complete the installation on your Skylane (right down to the cotter-pins) included in the box.  There are a few optional upgrades available as described below: 

One Piece or Two Piece 'Quick Off' Style Tailpipes

Because our exhaust are a True Dual exhaust, we offer two different tailpipe options for our Cessna 180 / 185 customers; the One-Piece and the Quick-Offs. Our one piece single left hand and right hand exiting tailpipes are for airframe that are able to remove the lower cowling down and aft about 3 inches. 

If your Skywagon is on and off floats, amphibs, skis, or has cowling mods that require extra angles to remove the cowling. The quick-off has intermediate tubes that are cut at the lower cowling line with two lower tailpipes that are pin clamped in place. This makes installing and removing the lower cowl easier if you have additional hardware on the aircraft.  Please contact us if you have questions and let our technical staff assist you.

Polished Finish or Ceramic Coated Tailpipes? 

The Ceramic Coated tailpipe is a cosmetic enhancement that hides the heat induced discoloration that is characteristic of stainless steel (think of the "bluing" you see on the muffler of a motorcycle). 

This discoloration has absolutely no effect on performance or reliability but the ceramic coating covers it up permanently. Otherwise, the polished tailpipe begins to discolor after a few hours of flying time. It can be re-polished anytime, but if you are proud of your Skywagon's appearance and would rather spend your time flying than polishing, the ceramic is a nice feature to have. 

A Word To The Wise: 

We strongly recommend that the aircraft's propeller be dynamically balanced to within 0.2 ips (inches per second) upon installation of the Power Flow System and every two to four years thereafter or whenever the propeller is removed and reinstalled . If the propeller is dynamically balanced within 25 flight hours of the installation (before or after) of the Power Flow System and you furnish PFS with copies of the logbook entries confirming this, PFS will extend the warranty on the Tuned Exhaust System from 12 months to 24 months or 500 Flight Hours (whichever occurs first).

Doing so every 2 - 4 years thereafter will dramatically improve the useful life and the reliability of every component that is bolted to the engine, including the Power Flow System.

Still not sure if a Power Flow is right for you and your airplane? For complete peace of mind, check out our: 

Warranty & Guarantee

Who wants to gamble with their hard-earned dollars?  You don’t want to and Power Flow doesn’t want you to, either.  That’s why we offer three layers of protection with each system we ship:

• Product Warranty:   Every system comes with a 12 month / 500 Flight hour warranty, whichever occurs first.  If the aircraft's propeller is dynamically balanced within 25 flight hours of the Power Flow installation (before or after) and you furnish PFS with copies of the logbook entries confirming this, PFS will extend the warranty on the Tuned Exhaust System from 12 months to 24 months or 500 flight Hours (whichever occurs first).

• 100% customer satisfaction guarantee:  If within 60 days from the date of the first flight after installation you are dissatisfied for any reason, you can return the system to Power Flow Systems and you will be entitled to a full refund of the purchase price of the system (exclusive of shipping charges and labor) once the system has been received and inspected by Power Flow Systems. Inspection will take place within five (5) days from the return of the system, and an adjustment to the refund amount will be made for any parts missing or damaged. If the original payment was made on a credit card, it will be refunded to the same credit card.  If payment was made by check, a company check will be issued. 

• And, finally, in cooperation with our network of Preferred Dealers, we are pleased to offer our:

Power Flow's Risk Free Guarantee:

We know that it works, more than 7,300 Satisfied Customers worldwide know that it works, and your local Power Flow Preferred Dealer knows that it works . . .

But, what happens if it doesn’t work on YOUR airplane?

As the name implies, this program lets you buy a Power Flow Tuned Exhaust System for your airplane through one of our Preferred Dealers, have them install it for you, and go fly with it for 60 days, absolutely risk free!   

If it works like we know it will, Great!  Welcome to the world of higher performance!

If the system doesn’t live up to YOUR expectations, or even if it does but you just don’t like all that extra horsepower, simply fly your airplane back to the Preferred Dealer (who originally installed your Power Flow).  That Preferred Dealer will:

• Remove the Power Flow System from your aircraft,

• Reinstall your original exhaust (as long as it was airworthy when removed) at No Charge,

• Refund the purchase price and installation charges you paid to have the system installed, & 

• Return the system to us at the Dealer's expense.

Power Flow will even refund your outbound shipping charges meaning that the only thing you stand to lose is your skepticism!

Challenger Air Filter

The Challenger air filter replaces the disposable foam filter media found on most aircraft with K&N's high efficiency reusable filter media which provides up to three times more air flow to the intake manifold of the engine.  Power Flow's Testing of the Challenger Aviation air filter is a great complimentary product to the Power Flow tuned exhaust. We conducted our own tests to justify claims on this product and our results were as follows:

• Definite boost in MAP

• Increase of 10-15 RPM

• More power generated on take-off

• Engine was able to "breathe" better

Challenger Aviation Advertised Benefits:

• Increased horsepower

• Increase in RPM or Manifold Pressure

• Reported fuel savings of .3 to .5 gallons per hour

• Uses K&N re-cleanable air filter media

• Up to 50% more air flow with the same dirt holding capability

• NO AD's

• Installs into factory location

• Up to 25 recharges or 2500 hrs

As mentioned above, the filter media itself is reusable. You just clean it and recharge it (coat it with oil so the dust sticks to it) once a year during annual and you can reuse it up to 25 times or 2,500 flight hours. Since the Challenger system significantly improves the intake side of your Cessna's engine at a very reasonable cost, we consider it to be the perfect complement to our Tuned Exhaust System which significantly improves the exhaust side.

Maple Leaf Exhaust Fairing

Part cosmetic (streamlines the appearance) and part performance, this fairing option slightly reduces the drag of the tailpipe, but more importantly it creates a venturi to improve the air flow through the cowling for better engine cooling and lower CHT’s.  The Maple Leaf fairing also helps in keeping the ram air flow high pressure flowing down through the engine's cooling fins to the low pressure in the lower cowling and exiting. The kit comes complete with STC, all the installation hardware, spacers for test fitting and simple Installation Instructions.