Jshep450r
05-21-2008, 06:17 PM
well i just got a 15.1 high compression piston for my 06 trx450r.. Now currently i have a hrc kit in it, with all jetting, what changes would need to be made, i kno id need to run racing fuel but could i keep the hrc cam in, and would it run with the hrc jetting? If not what would you guys reconmend (this piston is to the stock bore) Sparks racing,,