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125cc Grand Prix class?

Discussion in 'Racing, Motorsports, and Track Days' at netrider.net.au started by mr_sikma, Feb 12, 2008.

  1. Hey,

    Just wondering what bikes they use in the 125cc class?

    I am guessing they are 2-strokes?

    Any links?



  2. Yep I think so.

    You might also be interested in this -> MetraKit
  3. Yep. All 125 gp bikes are 2 stroke
  4. does anyone know of any 125cc racing clubs?

    i am tossing up between getting an RS250 for the track and keeping my bike

    or upgrading to a 600/100cc road bike and turning my 125 into a track bike

    any info would be greatly appreciated
  5. Get the rs250. Your 125 streetbike is going to be blown away on a track.
  6. Thanks for the advice i was leaning that way already

    my other question is if i put a 'big bore kit' on my 125 am i likely to get caught out

    how strict is the marshaling? on the domestic comp anyway
    (not aus GP i can't ride that fast)
  7. You may be caught. Don't waste your money on it. Get the 250
  8. 125GP bikes are purpose built race bikes.

    Producing 40-45bhp these 2 strokes usually run on either AV gas or other purpose race fuels.
    With proper fully adjustable suspensions and slick tyres these bikes can get up to speeds of 220+kph. Around Broadford 125's often are quicker than 400's.

    my 2 cents is yes get a proper 125GP bike, you will not find a better tool to learn about riding and racecraft. The only qualification is that you are not inflexable in the joints or overweight or 6ft + .....all impedements to properly fitting onto a 125GP bike.

    You can usually find entry level bikes from about $3-4000 and up depending on age and spares package.
  9. hahah, I,m 6"1 and i fit fine...after i extended the sub-frame 40mm. haha

    125s are great to start out on and once you get goin they are awesome to ride.

    cheers, Paul
  10. Thanks guys i might look into that

    i already 'fit' on my RS (i am 6ft) and have dropped 11KG's since christmas so it is becoming more of a possibility

    also lukas pesek is 6'2" so not all is lost

  11. If you are seriously thinking about doing something like that to cheat, why bother in the first place?
  12. just be competitive

    like a said earlier I'm not sure what you can and can't run

    some privateer classes let you make mods where as others make you run stock expansion chambers

    but seeing as full preped bike would make more power anyway it would be counter productive for me to run a bbk

  13. What does it take to start racing 125's ?? How do you get into it?
  14. Join a racing club that attends and holds events.
  15. Easy. Join a Club which is affiliated with Motorcycling Australia. Get a Racing License, they will help you there, buy a bike, prepare it according to their rule book, enter a meeting, and go from there.