the front diff was direct fit
all yamaha have the same gear ratio
only the cup of the cv joint was not exactly the same number of spline
change only the cup for a big bear 400 2002-2006
and the front drive shaft need to be shorted . but a front drive shaft of the big bear 400...
i put a big bear 400 2006 front diff in my wolverine 350 1996
change the cup of the cv axle to fit in the bear diff
make the wiring and 2 relay for the servo motor and put a switch on the dash with a light to see if he was in 2 or 4wd .
cut the front drive shaft and reweld it shorter...
i dont want to pay a 200 buck a arm for only a bad ball joint on my quad .
i have buy a ball joint from a kodiak 450 and a steel tubing fit with the size of the ball joint
cut the welding of the old joint. remove it with a press and put the new with a 11 mm washer made with my steel...