QUOTE(WIVIPERMAN @ Mar 10 2009, 04:53 PM)

This is an awesome topic to bring up & I'm glad someone did! I too...am considering going from a 121 to a 136 in the future. One other thing that concerns me is how much "top end" speed does one normally lose with the 136?
I ride mostly trails with the very seldom off trail, but also like to door some lake racing with the guys sometimes too!
When I had my 06 Yam Rage, my buddy has a 06 yam vector (With same engine). When both brand new, we were about even on the top end however, he has about 50 pounds on me. So I would imagine you may lose 2-3mph at the most going from a 121 to 136.
When we would race in loose snow, I would always beat him off the line and he would never be able to catch up. On hard packed trails, he would be able to beat me pretty good off the line. (He had studs vs no studs on my sled though)
Definitly worth trading a few mph on top end for a better ride in bumps, less track spin and more pull off the line.