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Posted by: Bubba297
Have it on my wife's wheeler. The TRX-9 porting is good if you like to ride around, have overall fun and casual race. If you ride hard or hillshoot or race a lot then go with the TRX-11 porting. I can tell you that the bolt on 330 has only one overbore size available, so you wouldnt want to mess up on the jetting. Since one year ago, I have lightly honed the cylinder and put one piston in on the stock bore. Careful maintenence will last a long time since piston life is only recommended for 40 hours. But overall, there is a nice power and torque difference between the 310 and the 330. Hope this helps,Bubba
Posted by: Bubba297
344, when I get ready to resleeve the cylinder we will get the cases bored and have it a little better and get a few overbores.
Posted by: Lateralus
GREAT company.Ive owned 2 ESR Motors and loved them.Now i have a 370PV from ESR (see pics) and it seems extremelly reliable and it hauls azz!!!!
Posted by: madracing
i had a 330 bolt on i ran a 39mm bored to a 40.5 ran it on race gas anf it was was a great bike i would buy one again. it'll run and beat most banshee even with work done to them. kill my brother 420 long rod.
Posted by: 344PV
good company
i would spend the extra cash & get my cases bored for a normal 330 or 350
Posted by: HA2
excellent customer service. i look forward to purchasing a big bore and much more from them this summer. i havent heard any bad things about them.
Posted by: dunasman
can anyone tell me anything good or bad about the e.s.r. 330 bolt on kit for the Honda 250 R
Posted by: dunasman
Good info - thank you
