Your wet clutch may be slipping just enough to hit the rev limiter or you might check and service the the sheaves. I doubt they tuned it that way, pull the cover driver side (don't remove the primary sheave cage as it supports the shaft) and in nuetual rev the engine high and see if the belt goes to within 1/4" from top of primary sheave.
FLOYD, SANDI & Sadie is the co-pilot. 05 660, 3000# VENOM WINCH, LED headlight Mod, 12' led light bar RZR seats, Resi shocks, SunF 26 X 9r X 12, CUSTOM PAINT(the rescue chopper can find us know)
"REMEMBER, SPEED KILLS, BUT IT WILL BE THE ONLY TIME YOU'LL DIE LAUGHING"