2003 Yamaha Wolverine - MPH Question

[YamahaWolverine]

So I was reading and a stock 2003 wolverine 350 should top out at 55 MPH and mine only does 44? What could be dragging it down? Any ideas appreciated. Btw I'm new here so hello everyone! I hope this forum is better than the others that I joined.

[oxidized_black]

Hello and welcome !!

Is this bike full time 4WD?

Stock 23" tires?

Make sure the valves are adjusted in spec, nice clean carb & filter, clear muffler ...

I was thinking more of 45 - low 50s ...

[YamahaWolverine]

Thank you! And yes and yes. The wolverines are made to have really tall gears and a buddy if mine who owns one said his would do about 55

[YamahaWolverine]

Hello and welcome !!

Is this bike full time 4WD?

Stock 23" tires?

Make sure the valves are adjusted in spec, nice clean carb & filter, clear muffler ...

I was thinking more of 45 - low 50s ...

What all should I have done? Diff fluid changed, valves adjusted, timing checked, Carb clean?

[oxidized_black]

i have heard guys say they will do 5?, but i think alot of conditions need to apply.

the bike is near 500lbs wet, add a 150 - 180lb rider, thats alot for a 350 to push fast especially in 4X4 ... not saying its not true ... if you want up to top speeds, check the compression, make sure valve are in sync, and carb is good and clear ...

i would say a step up in carb jets, a k&n filter or equivalent, and a aftermarket muffler would have you in high 50s ... i know the 350 motor is the same as the big bear except for the top end, i might be scared going over 50 on the bear, i havent clocked it yet, but i would say it goes maybe 40 - 45 ...

there is a governor on the throttle too, you can fiddle with that to see if the speed increases ...

[oxidized_black]

if the bike runs good as it sits now, i would dump seafoam every other or so tank to keep the carb clear ... yes, check/change your fluids for sure, timing and valves, a quick compression check can tell you if rings are worn or wearing ,,,

[YamahaWolverine]

Ok thank you! It has a k&n filter now and in a month or 2 I'm getting a slip on Hmf and going up on the jets. When I do that I'll check everything over

[Porps2001]

A stock "03" Wolverine might do 55mph down hill. I put a jet kit, pipe and K & N filter and barely got there. Mine was a "2002", but not much difference.

[Tim-ANC]

How confident are you in accuracy of your speedometer?