Aluminum Frame Conversions for Modern Two Strokes

Do you have a modern two stroke Honda, Kawaski or Suzuki? Do you want to update the handling of your bike to modern aluminum framed standards?

Well MPS (Motorsports Products and Services) just may have the perfect answer for you.

The folks over at MPS can supply you with three different options for your two stroke Honda, Kawasaki or Suzuki 250 or 500. They manufacture a frame kit, a rolling chassis or a complete package depending on your budget or desires.



The owner of MPS George Fanelli wrote a short bio about himself and his company which is posted below. If you are interested in any of his creations please feel free to contact him. He will be happy to answer any questions you may have about converting your bike to an aluminum frame racer.

I am 46 Years old, born in Buenos Aires, Argentina. My father is from Italy and he migrated to Argentina after World War 2,  He was transferred to Toledo, Ohio USA in 1968 I was 5 and have grown up here. I am a Journeyman Machinist and have a degree in Manufacturing Engineering.

We have our own Machine Shop. we  build and sell Custom Two Stroke Aluminum Frame Converted Bikes, Frame Kits, and Rolling Chassis. I have been racing since I was 10 years old. I raced the 500 cc Pro Am (Ohio and Michigan State Champ) and Rode the 500cc AMA Pro Nationals from 1988 to 1993


We were waiting for Honda’s Aluminum Frame 500cc Bikes to be developed and we were going to build our own in 96. Honda  was to release them to the USA in 2002 but decided to cancel the program and sell a CRF450 instead. After careful evaluation we discovered that the geometry for the CRF450 was identical to the CR500 old school steel framed bikes. We carefully built and tested the prototype Aluminum Framed CR500 for two years and developed the best handling two stroke in the world. Our design makes the factory frame even stronger than in the original form. We offer 250 and 500cc Kawasaki, CR500cc Honda’s, and RM250cc Two Strokes. We build two Stroke Motors, do suspension Mods, and sell OEM Parts

We are currently building the first Road Racer 500cc Two Stroke in an aluminum Frame and will be debuting it at the International Motorcycle Show in Cleveland Ohio, the Motorcycle Dealer Show in Indianapolis, Indiana, and at Bike Week in Daytona, Florida


George Fanelli on his custom built Aluminum Frame CR500 racing near Cleveland, Ohio taking the win in the 40+ Vet Pro Class.

George Fanelli on his custom built Aluminum Frame CR500 racing near Cleveland, Ohio taking the win in the 40+ Vet Pro Class.

MPS will be happy to ship their products any where in the world.

For additional information please contact;

George Fanelli
Sr. Project Engineer
Motorsports Products and Services
Toledo, Ohio 43615 USA

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9 thoughts on “Aluminum Frame Conversions for Modern Two Strokes

  1. These Thing are NUTS!, I knew about the CR and KX 500 AF’s but not all these? still the best bike in the world is the CR500 AF!!!!!!!!!!

  2. I purchased a MPS rolling chassis and love the bike George put together. Although the next one will be a home conversion. If you do the right research this can be done on your own.

  3. What is involved in doing one at home. I want to do do a crf250 to cr250 or rmz to rm.

  4. I’d like to see a lightly modified KDX200 or 220 engine in a new KX250f rolling chassis – now that would be a great woods weapon for nasty, snotty New England enduros, and would give the KTM200 a run for it’s money. It would also be just about bullet proof! I’d guess it would be about 15-25 lbs lighter than a stock KDX with much better suspension, and would be much more at home in the faster stuff too – like a GP or B/C level motocross.

  5. born 1959

    hard core 2 stroke rider / old 500cc racer

    from the 80’s

    all the fast guys

    & we all know who they were & were they came from !


    el cajon , ca

    Brock Glover

    Rick Johnson

    Ron Licien

    & the neighbors



    & the first to do it ! Moates

    & of coarse my friend & 4 blocks away neighbor ” Jimmie Johnson”

    I used to re weld his MX frames on his miniis almost every othere weekend for his dad Gary

    & yes the best bikes are the old 500 2 strokes

    I raced them @ Carlsbad & Saddle back !


    myself & son have 2 KX 500’s

    1 cr 500 dune cycle in work

    one of our KX 500’s is a 2006 250 alum frame

    It is the fastest bike in the so call dunes @ the hill with my 6’5″ 190 fit son on it !

  6. Hello !
    My name is Jaime Rodiguez, and my family history is vey similar as your, i was born in Spain but now i live in Brazil, I have a son 14 years old, he is a national champion and ride now a KXF 450 and 250, but i have one idea at long time:
    He is a Kawasaki factory rider, therefore he cannot ride another band, i wanto to do a KX500 with a modern configuration, same as KXF, what you can say about, please let me know, if possible and will be good ? i think in this bike only to trainning and race on sand, i remember my 500 in the sand races, amazing !
    Thank you for your attention

    Best regards


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