My buddy bought a new sprockets for his 400 Xplorer today. He was trying to put them on, but he said the drive sprocket on the rear chain wouldn't go on unless you removed the swing-arm. I told him they probably gave him the wrong part...I can't imagine having to take the entire back-end apart to replace a drive sprocket. He wanted me to ask ya'll if you could help. Do we have the correct part?
Thanks in advance,

 

I HAVE A 98 XPLORER 300 AND CHANGED THE SPROCKETS ON IT WITHOUT REMOVING THE SWINGARM. THE DRIVE SPROCKET WAS A LITTLE TIGHT FITTING THRU THE CUT OUT IN THE FRAME, BUT IT WENT IN. GOOD LUCK

 

Does he have the concentric drive system on his (99 and newer)?