i am sorry to make a "who would win" but which one would make more horse power, and be better for mx?The ole rappy is starting to smoke, and may need engine work soon, so i am either gonna put a 686 kit in or maybe 720 or 727, or get a 450r and then get either a 470 or 505.

sorry to tell you my life story


thanks for the input ahead of time

 

Who makes a Big bore 505 kit for a R?

 

Duncan m,akes the kit. Easily the Trx for racing.

 

We just did an article on are 500r for dirt wheels. You can see pics of it holeshoting all the 450 yfz over at ex riders.[img]i/expressions/face-icon-small-smile.gif[/img]

 

i'd think for racing track the r any day

 

damm and I thought I had the onley 500r.[img]i/expressions/face-icon-small-frown.gif[/img]

 

go with the r people say raptor is to tall and tippy. just my 02 cents.

 

i say the R..

 

yeah i was 99.9% sure the r was better for mx, but im not very serious about racing(im 14, need to be 16) and just like to play around with my friends.However does anyone know which would have more horses?