Do these Specialized Zertz inserts actually do anything on my carbon fork? I've just discovered this one is broken, and it could've been broken for years. I always thought they were just
Specialized Zertz Road Fork 700c 9x100 QR 1 1/8" | The Pro's Closet
First Ride: Specialized Roubaix 2017 – Answers to the 7 most important questions | GRAN FONDO Cycling Magazine
Specialized roubaix comp zertz frame and fork Carbon fiber 54 M (2011?) | eBay