YFZ 450r Engine Mods
#12
#13
yeah man, lose the commander 3 and get the 5. they have O2 sensors u weld into the header, and it will automaticly adjust the fuel settings so that it runs perfectly. and as far as bore and stroke, its kinda worthless, just get oversize valves and porting of the head and throttle body, and with the piston u should run about 106-114 octane, keep it from burnin up, haha. and lightening the flywheel gives u more top end, and makes it rev like a bike
#14
Thread
Thread Starter
Forum
Replies
Last Post
ATVC Correspondent
Classifieds, Garage Sale & Swap Shop
0
07-22-2015 05:00 AM
KimSJoh
Polaris Ask an Expert! In fond memory of Old Polaris Tech.
14
07-18-2015 07:20 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)