http://forums.sohc4.net/index.php/topic,191326.msg2237729.html#msg2237729I converted from 630 to 530 chain and sprockets, using JTF-338 (17) and JTR-284 (48).
The JTF338 has a shoulder on one side, I initially installed with shoulder out, but after installing chain, it was rubbing the engine case.
I then reversed the front sprocket with shoulder inside, no more chain rub.
104 links if I recall correctly.
530 MAX-O Chain - 530MAXO-104
Part #: 110946104 from Dennis Kirk.
From Randakks
Sprocket - Drive - Front - 530 - JTF 338 - 17 Tooth - CB650
SKU: BAJTF338-17
1
Sprocket - Drive - Rear - 530 - JTR 284 - 48 Tooth - CB750
later changed to 18 teeth on the front...