Depends on the chain. If it's a 630, each link is 6/8ths (or 3/4th) of an inch long. If it's a 530, each link is 5/8ths of an inch long. Since you extended your swingarm 6", your chain needs to be roughly 12" longer. So, for a 630, 16 links longer, for a 530, 19.2 links longer. Since chains come in piared links, either 18 or 20, depending on where your chain adjuster settles in.
\'81 GPz 1100 project
Elkhart, Kansas USA
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