Hell Fire Expansion Chambers

High performance expansion chambers made in the USA for ALL YEARS (69-75) Kawasaki H1 Mach III 500cc Triple 2 stroke AND the 1976 KH500.


NOW AVAILABLE! 1969-1972 KAWASAKI H1 500 CHAMBERS! Stingers coming Feb 2023!

Contact:

Phone: +1(206)-321-5001

Email: Ultrasonic2091@gmail.com


1969-1972 Kawasaki H1 Expansion Chambers

Baffled Version:

A set of 3 steel baffled expansion chambers, flanges, and springs. Exhausts come ready to bolt on with everything you need to install your new exhaust set! Steel was chosen for durability under heat and vibration. Performance spiral louvered baffles come prepacked with fiberglass and installed secured with a simple 1/8" steel rivets, making them secure and serviceable.

Pipes sets come finished in a protective wax sealant OR for Just $50.00 more satin black heat and fuel resistant paint.

Fitment: 1969-1972 Kawasaki H1 500. (Center stand must be removed)

Price: $799.99

USA Shipping: A flat rate of $95.00 will be automatically charged when you pay for the exhaust set of your choice (International see below)


Waxed Steel

1969-1972 Kawasaki H1 500

Satin Black

1969-1972 Kawasaki H1 500

69-72

69-72

69-72

69-72

1973-1975 Kawasaki H1 & 76 KH500 Expansion Chambers

Baffled Version:

A set of 3 steel baffled expansion chambers, flanges, and springs. Exhausts come ready to bolt on with everything you need to install your new exhaust set! Steel was chosen for durability under heat and vibration. Performance spiral louvered baffles come prepacked with fiberglass and installed secured with a simple 1/8" steel rivets, making them secure and serviceable.

Pipes sets come finished in a protective wax sealant OR for Just $50.00 more your choice of heat and fuel proof paint: clear coat, satin black, or gloss black.

Fitment: 1973-1975 H1 500 and 76 KH500. (Center stand must be removed)

Price: Only $749.99! Down from $799.99 in 2022

USA Shipping: A flat rate of $95.00 will be automatically charged when you pay for the exhaust set of your choice (International see below)

Gloss Clear/ Waxed Steel

1973-1975 Kawasaki H1 500 & 76 KH500

Satin Black

1973-1975 Kawasaki H1 500 & 76 KH500

Gloss Black

1973-1975 Kawasaki H1 500 & 76 KH500

73-76

73-76

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Call 206-321-5001 to order over the phone.

Stinger Straight Pipe Version:

A set of 3 steel stinger exhausts, exhaust flanges and springs ready to bolt on!

Finished in a protective wax sealant over natural steel (as displayed above) or painted (gas proof clear coat gloss or black gloss; additional fee applies).

Note: Please see contact info and contact us before purchasing this version online. Stock is limited.

Fitment: 1973-1975 H1 500 and 76 KH500. (Center stand must be removed)

Price: $799.95

USA Shipping: Flat Rate $95.00

Painting: Add $100.00 for gas proof clear coat gloss or black gloss, painted on demand.


Scroll below to select payment type, credit cards accepted, keep scrolling down...


Photo Gallery. Best viewed on desktop computer...

Shipping

~We Ship World Wide: For international customers please email or call for shipping quotes. If you wish to bypass a pre-quote on shipping you may place an order above, the standard 95$ shipping will be charged, however the exhausts will not ship until the remaining cost of shipping is paid.

~For Customers in the USA: Shipping is a flat $95.00 to any state and will automatically be charged when you click to pay for the exhaust set of your choice.

Performance

Hellfire Chambers use the same cone dimensions as the Denco's which people liked for their performance. I do not have the same tooling as the Denco's were made with so they will fit slightly differently but performance is sure to impress!

Design and Inspiration

On my 74 Kawasaki H1 I did a complete top and bottom end rebuild and several hours of tuning without achieving the performance I desired. It was brought to my attention by few fellow Kawi enthusiasts that the aftermarket chambers I had were holding me back and that no amount of tuning would improve performance. Having years of experience as a sheet metal fabricator for the food processing industry I decided that I would make my own pipes, and this is how Hellfire Expansion Chambers came to be. I built a few different designs, and after talking to Tony Nicosia landed on the tried and true design similar to what Denco had produced. Where my engine used to really struggle in the low-end RPM's and die off in the high RPM's, the Hell-fires excel!

Construction.

I take pride in the workmanship. These pipes are made from 20 Ga. cold rolled steel, chosen for its' superiority among alloys in an application, (exhausts) that will undergo both heat and vibration variations. The 6 piece construction of each pipe has been engineered to suit the fitment/frame of the bike. Each piece is formed, fit, tacked then TIG welded. The Spiral louvered baffles are designed to cut down on noise and are easily repacked.