There is no way a 300 should be stretching a 520 chain.....try lots more slack
Originally Posted by potatoho
I've found more issues with chain snatch during long whoops sections. I go through chains more often then tires on my 300 EXC, which does have a cush clutch but not cush hub. That was with primary drive brand chains. I'm trying out an RK brand to see if it does any better. If that fails then I'll switch lubes. With longer rides (250-300 miles), I got to the point with a primary drive brand chain that it would stretch during the ride to be out of tolerance.
I'm just wondering if a cush hub would save me some cash on chains.