I remember one magazine test of quickest cruisers going 0-60 and the Valk was a little over 3.5 seconds. Another magazine tested a Valkyrie Tourer at a 12.0 in the quarter mile. My old 1150ES Suzuki had around 125hp and was 550# and hot shoe Jay Gleason (?) ran a 10.43. So my bike has similar H.P. as I understand it but some 150 extra pounds. New tires and Viking header and Attic Rat package it runs pretty good--I have spun the rear tire all the way thru 2nd gear--I'd not like to add Nitrous and blow it up
You needed better tires. I can't spin through 2nd. If I put a hard enough tire on any bike I can spin through just about any gear.
When it gets cooler I will go dyno my bike, possible quarter mile run come up on a 20 year old 2001 standard. The Valkyrie is limited on the high end. The top speed limit may limit a quarter mile run? I don't know but we will see what happens. I'm looking for cooler air/denser air for all this.