Zipp’s new 77/177 hubs on the 202 and 303 Firecrest wheels can accept an XD driver, but you’ll be hard pressed to find XD compatible drop bar shifers. Think flat bar Frankenbike. © Cyclocross Magazine

Zipp’s new 77/177 hubs on the 202 and 303 Firecrest wheels can accept an XD driver, but you’ll be hard pressed to find XD compatible drop bar shifers. Think flat bar Frankenbike. © Cyclocross Magazineundefined