Question about 2005 Derbi GPR 125 Racing

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Can I extend cylinder for derbi gpr 4t from125cc to 200cc or more

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You can get a 150cc bore kit from derbi which is very easy to fit and cheap. It's on derbi.com and will give you a performance increase of about 5 HP bringing your total to about 20hp. Once you do that you can get a bigger exhaust also from derbi which should add another 3hp. I have the derbi gpr125 4t and I have done all the above, top speed is about 90mph and accelerates very very fast. Good luck.

Posted on Mar 03, 2011

  • mark Oct 09, 2011

    ss117,how much is the 150 kit m8 i hav gpr thunder pot exhaust sounds mint :) ive ordered malossi air filter and in process of havin my custom jet kit made up in the states i cant find the kit on derbi site u got a link? thanks

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WHY NOT JUST GET A BIGGER BIKE INSTEAD . BUT THERE ARE A LOT OF FINE CYLINDER TO DERBI ON THE AFTER MARKET SO TAKE A LOOK ,

Posted on Oct 12, 2010

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