Shimano ST-R8170 Left Lever W/BR-R8170 Rear Disc Brake

Shimano Brake Lever Set Combination
Featuring the ST-R8170 Left Brake/Shifter lever, and the BR-8170 Brake Caliper

ST-8170 Shifter
Road riding has never been this much fun. That's because the redesigned ULTEGRA ST-R8170 DUAL CONTROL LEVERS have all-new ergonomics, even more precise brake modulation, and wireless electronic shifting. This trifecta lets you focus on the next sprint, the next descent, or the next joke from your riding partner.

Shimano's new ULTEGRA ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO WAVE technology. The all-new Di2 platform, used on both DURA-ACE and ULTEGRA, untethers the shifters while delivering our fastest, most reliable wireless shifting. Your time on the bike is precious, let Shimano make it even better.

Lever Features

• Clean Cockpit: Wireless connection enhances the aerodynamic effect and easy maintenance
• Unparalleled ergonomics engineering refined with pros' feedback
• Raised hood peak improves ergonomics
• Optimized brake control
• Lighter, smoother lever action
• Enhanced modulation thanks to an expanded braking control area
• Compatible with wired and wireless connection
• Available to additional satellite shifters
• High electronic energy efficiency
• 1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteries

BR-8170 Brake Caliper
To the delight of riders and mechanics alike, the new ULTEGRA BR-R8170 caliper delivers enhanced modulation, a quieter brake system, and an easier than ever bleed process.

The ULTEGRA R8170 disc brake caliper brings a new level of control to the road cycling world with enhanced modulation and a quicker initial braking point. Despite its smaller construction, the system is quieter than ever and easier to maintain.

Brake Features

• 10% wider pad clearance decreases brake noise
• Maintenance-friendly bleeding process

Technical Specifications - Lever

• MODEL NO: ST-R8170-R
• Speeds: 12
• SERIES: ULTEGRA R8100 Series
• Average weight: 391 (/pair)
• Shifter type: Dual Control Lever
• Remote switch: Yes
• Brake lever Brake hose (kit): SM-BH90-JK-SSR
• Brake lever Hose joint: Straight
• Brake lever Recommended brake caliper: BR-R8170
• Brake lever Oil: SHIMANO Mineral
• Brake lever Reach adjust: Yes
• Brake lever Clamp band (mm): 23.8-24.2
• Brake lever Funnel bleeding: Yes
• Brake lever Free stroke adjust: Yes
• Brake lever|SERVO WAVE: Yes
• Di2 connectivity wired|Di2 shifting: Yes
• Di2 connectivity wireless|Di2 shifting : Yes
• Firmware update by E-TUBE PROJECT: Yes
• SD50 port (pcs): 0
• SD300 port (pcs): 1
• SD50 connector (pcs): 0
• SD300 connector (pcs): 0
• Port for SD50 remote sprinter shifter (pcs): 0
• Port for SD300 satellite shifter (pcs): 1
• Battery: CR1632

Technical Specifications - Brake

• MODEL NO: BR-R8170
• SERIES: ULTEGRA R8100 Series
• Color: Series color
• Average weight: 123
• 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): Yes
• ICE TECHNOLOGIES pad compatible caliper: Yes
• Pad|Standard 1: K05S-RX Resin (w/o fin)
• Pad|Standard 2: L05A-RF Resin (w/ fin)
• Pad|Option 1: L04C-MF Metal (w/ fin)
• Fixing screw spec for rear mount|10 mm mount: Yes
• Fixing screw spec for rear mount|15 mm mount: Yes
• Fixing screw spec for rear mount|20 mm mount: Yes
• Fixing screw spec for rear mount|25 mm mount: Yes
• Fixing screw spec for rear mount|30 mm mount: Yes
• Fixing screw spec for rear mount|35 mm mount: Yes
• Recommended brake lever: ST-R8170
• Recommended disc brake rotor: RT-MT800 RT-CL800
• Oil: SHIMANO mineral
• ONE WAY BLEEDING: Yes
• Mount type: Flat mount
• Piston: 2
• Caliper fixing screw|Tool size: 4 mm
• Caliper fixing screw|Anti loosen method: Screw fix pin+Snap ring
• Pad mount: Pad axle