I have a 13 sportsman 850 xp. The bike Boggs down and 3800 rpm. So I think the rev limiter is fried. is the rev limiter built into the ecu (computer), so would I have to replace it than

 

Go through the trouble shooting steps and checks from the manual.May be something simpler than a rev limiter in the ecu.If you can't find a definite answer in the manual,have Digital Wrench find the problem.A lot easier than guessing on high dollar parts.2013 Polaris Sportsman XP 850 HO Service Manual PDF Download