CRF70 by DDR*DobleDRacing*

[mactech]

After tuning the engine and test the two exhaust systems (CHP and FMF4.1)
I will stay with the FMF4.1 , The CHP works very well, but the engine response is very sharp.









I think this is the end ....?

[PlanetMinis.com]

[mactech]

Wow, nice bike!!
That is Jimmy from Sano's old frame, he raced it once at MiniMoto and sold it.
Did you buy it from him?

I hate to hijack yourAttachment 90679 thread, but I also need to sell our race 70.
Here is a picture of it and and link to our Ebay listing too....
Custom Built Motorcycles Custom Built Motorcycles | eBay

Hi Dave,

Yes , is the chassis of Jimmy , I buy at the

[clerck]

Hello, very nice bike and engine! But I've got a question (sorry to ask it here): I've also got the polini 4v Head and cylinderkit. But normally this is used on a 49,5 stroke based engine. Did you have to customize your piston or have to customize something else to make the 54mm crankshaft fit?? And what about the power-gain? Does the engine still run without problems? I would also like to get the maximum out of the kit. Thank you for your time, and again, nice bikes!