Hey, my friend just got a Raptor, and I was wondering if i should let the local motorcycle shop make my 300EX to a 420 EX? If not, can you suggest a good engine that would keep up with the raptor? Like a Yz 426 but something more affordable. Thanks

 

that kit cost some major money i have a 300ex 405 kit and it was over $2500. i have the complete motor i am selling but it needs to be resleeved and nneds a new cam chain guide. if you are close i also have 2 5gallons of vp 14 race gas.

 

Yeah, how much do you want for the 405 engine?