Shimano Ultegra ST-R8170-LF Di2 Shift/Brake Lever - Left 2x Black Rise-20mm Model SRC/SRX Description 9/10sp Alloy

Model SRC/SRX Description 9/10sp Alloy FH Body (No Caps)

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50mm Offset (Size 47–51) / 45mm Offset (Size 54–61)

Hub/Disc Compatibility Center-Lock Rotor Size (mm) 140 Rotor Type Two Piece keyword search AXS

It also prevents a broken spoke from puncturing the tubeless system and losing air

Shimano Ultegra ST-R8170-LF Di2 Shift/Brake Lever - Left 2x Black Rise-20mm Model SRC/SRX Description 9/10sp AlloyShimano's Ultegra ST R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO WAVE technology. The Di2 platform untethers the shifters while delivering fast and reliable wireless shifting. Your time on the bike is precious let Shimano make it even better. The wireless connection provides a clean cockpit enhancing the aerodynamic effect and easy maintenance Unparalleled ergonomics engineering refined