Is the 219, or 428 used for the IAME x30 Super
Single speed….
Thanks,
Bill
Pretty sure 219 is standard even on the super.
With my 175 shifter it’s definitely a 428.
I run an o ring 219 on my regular x30, don’t notice a major difference even though it’s technically more stiff. With testing, the o ring lasts much longer and less chain stretching than a regular chain. Run the o ring chain slightly looser after initial break in, whereas I have found I needed to run the regular chains a little tighter due to stretching (which does go away after a few sessions).
It’s a 219 because ideally you still want that level of granularity in gear adjustment with a single speed.