Welcome to the Association of Classic Two-Stroke Owners

Founded 1990

The Expansion Chamber Online, the ACTSO Newsletter

How to Join ACTSO

Gallery of Member's Machines

If you love classic two-stroke street and roadrace bikes as much as we do...

We invite you to join the group that speaks your language. We're not partial to a particular model, brand, country of origin, etc. - just the love of the two-stroke powered sport motorcycle.

Over 250 strong, the Association of Classic Two-Stroke Owners is one of the most unique motorcycle clubs in the world. Our members include tuners, fanatics, collectors, racers and historians whose collections include RD's, H1's, RG's, TZ's, X-6's, GTO's, etc. Everything from Aermacchi to Zundapp. As the president and founder of ACTSO, I am dedicated to preserving the heritage of all 2-stroke street and roadrace motorcycles. We all have something special in common, the love for the most exciting machines ever built. Fast, light-weight machines that changed the sport of motorcycling in the '60's and evolved into the ferocious 195mph grand prix machines of today.

Our club newsletter, The Expansion Chamber, is comprehensive and informative. Each quarterly issue includes classifieds, a roster of members, tech articles by guest tuners & gurus, photos by the incomparable Dan Mahony, and much more. Our archives of old articles, parts lists, tech reports, etc. is available to members, as well as the opportunity to network with other collectors and enthusiasts. From helping with finding those rare parts to keeping you abreast of the latest technology, we're here for each other. If you have an appreciation for the classic and exotic two-strokes, you will find yourself in good company.

The Expansion Chamber Online is now online & will be published in a black & white magazine format. Dues are $20. per year U.S. & $35. foreign payable to Moto Carrera or president Doug Johnson. This includes roster listing & text classified ads as well as full access to our huge archives. Photo ads are $10. A black & white hard copy tabloid will be published quarterly (sorry, no more color covers until this is large enough to justify it). Non-member classified ads are $5. for 20 words & run for 90 days. Commercial ad inquiries should contact racebike@mailcity.com for display ad rates. Some back issues are still available for $6. each.

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