WPS = Western PowerSports
they are damn good chains for the $, IMO
after going thru at least 1 chain per season buying the cheap "colored" ebay chains, even snapping 2 of them last season, 1 snapped on the first ride
I then decided to spend a few extra bucks and get a spocket/chain set from laclare powersports on ebay.
that included a WPS non o-ring gold chain and JT sprockets.
i think i only had to give it 2 small chain adjustments this whole season.