My RC51 has 70 foot/pounds also and came stock with a 530. People use 520 on them all the time. The only weak link in a 520 kit is the alum. rear sprocket. If you used a steel rear sprocket there will not be a weak link.
That being said the 530 will work great and be lighter than stock.
I have had trouble and know others that have had trouble with RK chains. The rollers fall off them and leave just the pin. They also do not stand by there warranty at all. Avoid RK like Like your life depends on it my chain broke o the highway in traffic. It had 10 rollers missing and had been inspected and lubed less than 1 hour before it fell apart.
I have used EK and DID with no problems at all.
|