rotax max big bore kit?

[loosecannon]

hi eric:
i just like to know if there is a big bore kit for the rotax max FR125. From your site i understand that if a 125 is mod for more mid to top , more frequent rebuilt is required. i just like to have more low to mid . because we have a very short track , just 26 sec per lap. also any changes to the carby and exhaust pipe required for the big bore kit ? thanks

 

[Eric Gorr]

My 58mm piston may fit, here are some dimensions. The pin size is 15mm, the max. rod width is 20.5mm The overall lenth is 58mm. The timing height measured from the top of the pin hole to the edge of the crown is 21mm. The ring is pinned on the centerline of the intake port.
Is this the kart engine with the removable liner? If so you can send just the liner to us for boring and plating. That liner is so stiff that we can hone it to size and it won't change after you thermally fit it.