I did say "ish". lol. Kawi is correct. I remember a YouTube vid where the top speed was over 60.It would be over 60. I have 1.5mm shim in my grizzly and it hits the rev limiter at 60mph.
The shim usually knocks 5-8mph off you're top speed.
My last grizzly, a 2009 700 had a hunter works machines sheave. I ran out of power before I would hit the limiter. That was around 65mph. I was running 27" heavy 6ply radial tires. That's what held me back from hitting the top speed.
I did say "ish". lol. Kawi is correct. I remember a YouTube vid where the top speed was over 60.
Like I said... plenty fast enough to die on. If max speed is what you're looking for, you should probably look elsewhere. If a mix of reliability and performance (heavy on reliability) are what you're looking for... Well, welcome to Yamaha. The Griz won't pull the front end off the ground when you pin the throttle doing 20, but it does just fine for my taste. What kind of riding are you looking to do?
Oh, and welcome to GC!