Hi I own a Suzuki Vinson 500 auto and about 2 weeks ago it maxed out at 61 mph. The other day it only got up to 49 mph. It is running great but where did my speed go. Thanks

 

i dunno what to tell ya.. have you talked to your dealer yet?
did it only run 49 that 1 time? have you tried it since?

 

do you do a lot of mud riding, If so, then the Exhaust could be getting stopped up...
Happened to me on my 700 sp with a MBRP pipe, it got bad enough where it would not pull itself out of a mudhole until I cleared the problem.

Also, the Air filter could be getting dirty, restricting the air flow.


Not sure if this would help, but it was the first few things that I thought of.

 

Temperature has a big influence on performance.

 

Agreed, If it was cold when you got the high speed reading and warm when you go tthe low reading Temp/Jetting could be a factor

 

Does the Vinson have a hi/lo tranny? Maybe you were in low, if it has one, the second time. I had a buddy do this on a P650.