Join Date: Aug 2005
Years Riding: Dunno, awhile?
How you found us: DML
I haven't run U4 in while. It will gum your shit up if you leave it in for any significant amount of time, and you need to be jetted properly for it see any worthwhile gain.
Cheapest I've seen it is $70/5 gallons from Lithium Motorsports. Might have been a sale, I don't know what it'd be now.
FWIW, I don't really think the few extra HP is worth the cost for Race gas on Sumo bike.
Attorney-at-Law: Doing my part to contribute to the downfall of western society.