KMC recently updated their pins on the XSL chains to make them stronger and last longer.
The new X2.0 chain pins claim to double the chain’s life by preventing stretch. The outer plates now have XX stamped on them, so you know you have the latest version.
The plates also get new XX bridge shaping amd chamfering on the insides and outsides to guide the chain on and off the cogs for quicker shifting.
Available in 9-, 10- and 11-speed, weights range from 224g at the lightest (11-speed Gold/Silver) up to 277g for the base level 9-speed chain. The 10-speed Gold/Silver is 236g.
Retail is $65 up to $98.
There’s also a DLC (Diamond Like Coating) 10-speed chain that ha a very hard, smooth surface for a bit better longevity but much faster shifting. That one’s up to $145.