Shimano Ultegra FC-R8100 Crankset - 165mm 12-Speed 52/36t Hollowtech II Spindle Interface BLK CheckoutTitle=Surly Ultra New Rear Hub - Threaded x 135mm Connectivity ANT+ BT SMART Customizable MFPN=F5212 Color:RM2+3 Speed w/Binding 386 EVO Thread Together MOG0539

Shimano Ultegra FC R8100 Crankset 165mm 12 Speed 52 36t Hollowtech II Spindle Interface BLK CheckoutTitle=Surly Ultra New Rear Hub Threaded x 135mm Connectivity ANT+ BT SMART Customizable MFPN=F5212 Color:RM2+3 Speed w Binding 386 EVO Thread Together MOG0539 Connectivity ANT+ BT SMART Customizable Screen Yes Heart Rate Monitor Yes Primary Color White Wristband Whitestone Tidal Blue Silicone External Sensor Compatibility Speed Cadence HR GPS Yes Touchscreen Yes Watch Color Whitestone Solar Charging No Battery Type Lithium Ion Type Tubeless Size 700x33 ISO 622 Bead Fold Tread Sidewall Color Bk Blk PSI 75 Weight (Grams) 300 TPI 120 Durometer Features Reflective Sidewall No