Jason B.wrote a question about SRAM PG-1170 Cassette on May 5, 2016
I bought the Ridley X-fire a couple months ago from here with Force CX-1. Front 42T and rear 11-28 with 116 link chain. I'm doing a race with lots of steep climbing. Looking to buy the PG-1170 11-36T. Will I need a new chain too?