Shimano RC903 S-PHYRE 43.5 White Shoe 165/190x37.5-45mm AL6061 tube with forged alloy

AL6061 tube with forged alloy head

Integrated ratchet mechanism with fine toothing for fast safe working

so you can access apps or entertainment while you ride indoors on a trainer

ProTech™ technology joins the two semi axles inside the bottom bracket with a single sturdy screw

M-Shaped grooved tread pattern

Shimano RC903 S-PHYRE 43.5 White Shoe 165/190x37.5-45mm AL6061 tube with forged alloyPremium materials, premium performance. Shimanos RC903 S PHYRE road shoes deliver top technology and Shimanos stiffest carbon sole to make this the fastest road shoe around. Lightweight and breathable microfiber leather upper provides optimal fit and superior comfort throughout your ride Premium finish heel cup with anti twist stabilization secures optimal foot positioning for intense acceleration Sleek, low profile crossover lacing pattern elegantly