530 is for modern big bikes. Old school Ninja muscle wears 630 to say dont fuck with me.
I'm in the process of rebuilding a motor right now, and its painfully obvious that 2 of 3 cranks at least are no good as whoever last rode this thing NEVER changed the oil which is clearly evidenced by the smell of burnt oil I got when I took the conrods off the crank, well the 3 that remained. 1 was well on its way to severe failure, the other two show major signs of bearing wear. thankfully I have a set of fresh rods with brand spanking new bearings on them which are going to be used. I dont want to screw up my passion and rebuild my bike 20 times.
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