My top speed on my 440 Trinity according to my friend's GPS is 65 MPH with 15/36 gearing. His YFZ with intake mods topped out at 73 MPH. I was pretty disappointed with the top speed, however when I hit Comp Hill at Dumont the disappointment is over. My 440 will beat piped raptors, hang with piped 650's, and beat piped 500's.

 

Lay off the crack pal my friends piped 440 couldn't beat me or my friends raptors when they were stock, he even lost to a z400

 

just because a bike has a 440 doesn't mean it is quick. in fact it is really really easy to get a higher compression stock bore 400ex to smoke a 440ex. the piston itself does very little. especially when you have the wisecos because the compression ratios are way off. a 440 needs a good pipe, proper jetting, correct fuel, a good cam, and proper gearing for your style of riding.

 

Mine flat out rips. As a matter of fact, it pulls piped raptors no problem. I think just dropping a 440kit is not going to help as much as doing a cam, porting etc... and taking the time to get it dialed in right.