Then I'd say leave it. I personally like stock gearing but am considering the 15t with my new power. 1st and 2nd are almost worthless to me. 2nd is a tad short in the trails and 3rd is to high lol so going up a tooth would be good.
Update: I have ordered and installed the 15T with my 43T rear on my 660 and a 16T would be too much imo. With the 15T I would barely leave first gear in the trails unless there was a nice straight path. As for flat out drags or race it is insane. Much improvement over my 13T. Its only one day of testing but I'm thinking I'm gonna like it since my buddies predator 500 used to beat me in a drag, pretty sure those days are over.
i cant see a raptor 700 doing 135mph lol 135kph no problem... i have/had a 700r 2009, full k&n air filter, msd blaster fuel/ignition controller, full big gun evo r duals, slick road tyres, 15/36 gearing and i topped out at 89.6mph on flat surface, and it was screaming pretty loud. standard they have almost 40hp, probably 45/50 once you do the "big 3". 60bhp if you go stage 2, but thats still not enough to be getting 135mph. my mates ktm 690 2017 model has about 70hp and only does 120 and thats had the race fuel controller mod airbox and full akro exhaust. so imo 135 is just not possible from a 700.
Hey yall im new 2 the forum i have a question bout sprockets i have a 2018 yamaha raptor 700 i added the Barkers Big 3 dual kit 2 it its hella fast n i love it wat size front n rear sprockets should i get to have more top end but i dnt want 2 lose a lot of botton due to sum trail riding