RX is the last saddle you will ever need

9 and 10mm Socket size

Ultegra 6600 and 105 5600 chains are recommended for use in conjunction with Ultegra 6703 and 105 5703 triple

and sealed hubs

Eagle AXS™ derailleurs

PEARL IZUMI Junior Canyon Short - Closeout Size:- Small (7/8) RX is the last saddleThis mountain biking short has all the fit, style and function of mountain bike shorts from Pearl Izumi's adult range, not to mention being durable enough to handle additional off the bike adventures. They feature a sewn in liner short with Pearl Izumi's Junior 1: 1 Chamois, for enough breathability and support for long ride adventures. SELECT Transfer woven fabric provides optimal moisture transfer, stretch, and comfort Sewn in mesh liner with Junior