Shimano
Shimano Ultegra Di2 ST-R8170 BR-R8170 Disc Brake Front or Rear
Shimano Ultegra Di2 ST-R8170 BR-R8170 Disc Brake Front or Rear
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SHIMANO ULTEGRA DI2 ST-R8170 / BR-R8170 DISC BRAKE (INDIVIDUALLY SELECTABLE: FRONT 2-SPEED OR REAR 12-SPEED | FLAT MOUNT | J-KIT)
The Shimano Ultegra Di2 ST-R8170 / BR-R8170 hydraulic disc brake combination combines wireless Di2 shifting performance with outstanding modulation and high braking power. Thanks to the proven **SERVO-WAVE technology**, the brake responds extremely quickly and can be controlled sensitively on fast descents. The newly designed shift lever offers superior ergonomics, adjustable free stroke, and integrated reach adjustment for maximum control.
The braking system is available as an individual component for either the **front wheel (left, 2-speed)** or the **rear wheel (right, 12-speed)**. Both versions come as a **J-Kit (pre-assembled and pre-filled)**. The flat-mount brake caliper features 2-piston technology with 10% more pad clearance to the brake disc, which effectively prevents annoying rubbing. Equipped with L05A resin brake pads including cooling fins, the system is perfectly prepared for intensive road bike use.
Features & Specifications
• Brand / Group: Shimano Ultegra Di2 / R8100 Series
• Front Wheel Model (FW): ST-R8170-L / BR-R8170-F (Left | 2-speed front derailleur control | Hose 1000 mm)
• Rear Wheel Model (RW): ST-R8170-R / BR-R8170-R (Right | 12-speed rear derailleur control | Hose 1700 mm)
• Shifting Stages & Control: Wireless Di2 control
• Brake System & Mounting: Hydraulic Disc | Flat Mount (FM)
• Technology: SERVO-WAVE | Adjustable free stroke & reach | 10% more pad clearance
• Brake Hose & Pads: SM-BH90-JK-SSR | L05A resin with cooling fins (Ice-Tech)
• Recommended Rotor: Shimano RT-MT800 / RT-CL800 (140 mm / 160 mm)
• Material Lever / Caliper: Aluminum (lever) & CFRP bracket / Aluminum (brake caliper)
• Version & Condition: J-Kit (system filled, hose not yet connected to the STI for installation)
• MPN / EAN FW: IR8170DLF6SC100F | 4550170241056
• MPN / EAN RW: IR8170DRRDSC170F | 4550170241018
Scope of Delivery
1x Shimano Ultegra Di2 ST-R8170 / BR-R8170 disc brake (depending on selected variant for front wheel left or rear wheel right, filled as J-Kit incl. L05A resin pads).
Conclusion
High-end disc brake system of the Ultegra R8100 class: Shimano ST-R8170 / BR-R8170 (individually for FW or RW) with SERVO-WAVE, optimized pad clearance, and wireless Di2 shifting technology.
Product Information & Conditions
GPSR Information
Manufacturer
Shimano Europe B.V.
High Tech Campus 92
5656 AG Eindhoven
Niederlande
Email: privacy@shimano-eu.com
Note: All product information and technical data are compiled with the utmost care. Nevertheless, errors, discrepancies, or changes cannot be ruled out. Manufacturers reserve the right to change specifications, features, and weights without prior notice. Subject to change without notice.
NEW / DISCONTINUED GOODS WITH GUARANTEE / USED GOODS WITH GUARANTEE
Our standard
We invest considerable time and care in each of our bicycles and parts before they go on sale. Every bike and every item is thoroughly cleaned, inspected, and, if necessary, fitted with new wear parts to ensure it's technically sound and visually appealing.
This is precisely where we differ from many other providers: You only receive items from us that have been honestly and conscientiously inspected. The condition and all relevant information can be found transparently and comprehensibly in our item information and terms and conditions .
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USED GOODS - Warranty
If you choose our used bicycles, components, or equipment, you benefit from additional security: We offer a one-year warranty . So you can ride worry-free, knowing we'll stand behind you even after your purchase.
Note: Items expressly marked as “defective” or “DIY goods” are excluded from the warranty.
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NEW GOODS - Guarantee
When you purchase new bikes, exhibition pieces, demonstration models, or discontinued items, you are doubly protected: You receive a 2-year manufacturer's warranty or a 2-year guarantee – clearly and transparently stated in the item information.
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