Bought these to replace my u joints on a 2008 polaris crew 700. The caps were hard to install. Kinda looked like they were out of round. Then when I finally got them in there wasn't enough room to install both clips. Pulled back apart filed yokes down. Reinstalled and by then they didn't feel any better than the old ones. Went to oriellys and bought some 338s and junked these. 338s at oriellys felt smoother from the get go. Caps pushed in by hand half way. Clips wouldn't have went on if I hadn't of already filed yokes down though. Also they were greaseable