My buddy has a 06' 450 Grizzley or kodiac and the motor looks the same as my 06 wolvey. Weve had them both tore down a bit, they matched. FYI. I love my wolvey. Went to coal creek and didnt have a problem, never ran out of power except on the roads with the 700's. Sank it a few times, it is heavy. Im happy with it, its my firt quad in many many years.