Shimano GRX STI ST RX810 BR RX810 Hydraulic Disc Brake Dual Control Lever Assembly, 2x11 Speed Category_Cycling Bib Short Contact us to verify the Size:700x38c (RF738 GKEXT D) Contact us to verify the Rizer’s compatibility with other brands 42 622 700 x 40C Brake type Hydraulic disc brake Brake hose (kit) SM BH90 JK SSR Hose joint Straight Brake hose color (kit) 1 Black J Kit spec (for OEM) ✔ ICE TECHNOLOGIES pad compatible caliper ✔ Pad Standard 1 K05Ti RX Resin (w o fin) Pad Standard 2 L05A RF Resin (w fin) Pad Option 1 K04Ti MX Metal (w o fin) Pad Option 2 L04C MF Metal (w fin) Fixing screw spec for rear mount 10 mm mount ✔ Fixing screw spec for rear mount 15 mm mount ✔ Fixing screw spec for rear mount 20 mm mount ✔ Fixing screw spec for rear mount 25 mm mount ✔ Fixing screw spec for rear mount 30 mm mount ✔ Fixing screw spec for rear mount 35 mm mount ✔ Recommended brake lever ST R9270 ST R9180 Recommended disc brake rotor RT MT900 RT CL900 Oil SHIMANO mineral ONE WAY BLEEDING ✔ Mount type Flat mount Piston 2 Caliper MONO BODY ✔ Caliper fixing screw Tool size 4 mm Caliper fixing screw Anti loosen method Screw fix pin+Snap ring Pad mount Pad axle Enhanced modulation thanks to an expanded braking control area