Squints; Your owners/service manual will tell you the link count and size of the chain you need, with standard sprockets. The whole deal with any chain/sprocket combination is how they fit each other. Usually the countershaft (front) is make from case hardened steel and the rear from soft steel or aluminum. When you put a new chain on worn sprockets the chain stretches to "fit" the worn parts. The best way to check for proper fit is to grab the chain at the 3:00 O'clock position, when facing the rear sprocket. See how far the chain will lift off of the sprocket. Make sure you have plenty of slack to do this measurement and the bike is on the centerstand. When you get new parts the next time, lay the new chain over the new rear sprocket to simulate the way they are when on the bike and you'll find you can't "lift" the chain very far. Now lay your worn chain over the new sprocket and see the difference. The other thing is that O ringed chains only trap the lube inside the pin/bushing areas. The rollers that turn around the bushings (the part that contacts the sprockets)still needs constant lubrication. The lubing should be done while the chain is hot, so that the solvents flash off, leaving the grease. It's also a good idea to wipe the excess off of the outside of the chain. It keeps it from flinging onto the bike and your left calf. Ha As you know, keeping the tension adjustment up to specs also helps in smooth shifting. Wow, this post got really long, Sorry! Ride safe, Steve
\'74 Z1-A, Bought new, worn out 3 times, being ridden now
\'83 XVZ12TK, was daily driver until frame broke
\'78 KZ650SR-D1A, Son's bike, I'm the wrench (He's young)!