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Description
Shimano Ultegra ST-R8170E Di2 Shift/Brake Lever with BR-R8170 Hydraulic Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount, BlackYour time on the bike is precious, let Shimano make it even better. 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. The BR R8170 hydraulic 2 piston disc brake caliper brings a new level of control to the road cycling world with improved modulation and a quicker initial
Your time on the bike is precious, let Shimano make it even better. 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. The BR-R8170 hydraulic 2-piston disc brake caliper brings a new level of control to the road cycling world with improved modulation and a quicker initial braking point. Despite its smaller construction, the system is quieter than ever and easier to maintain.- The wireless connection provides a clean cockpit, enhancing the aerodynamic effect and easy maintenance
- Wider pad clearance decreases brake noise
- Maintenance-friendly bleeding process
- Unparalelled ergonomic features, such as raised hood peaks on levers
- Brake control is optimized with light and smooth lever action
- Enhanced modulation thanks to an expanded braking control area
- Compatible with wireless or wired connection
Product Specifics
- Brake Lever Actuation: Hydraulic
- Rotor Included: No
- Brake Caliper Mount: Flat Mount
- Brake Lever Use: Right
- Rear Der/Shifter Compatibility: Shimano Road Di2
- Drivetrain Speeds: 12
- Color: Black
- Hydraulic Fluid Type: Mineral Oil
- Pad Compound: Resin
- Hydraulic Hose Length: 1700
- Adjustable Reach: Yes
Today's Stock Status
Currently not available
UPC: 192790168456
EAN: Not available
Manufacturer Part Number: Does Not Apply
LD0519
181354-Q0-L
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Great socks for the price!
Size: 6-10, Color: Black, Size: 6-10, Color: Black
I love these socks, they are perfect no shows but the material is thick enough for toes not too go thru. The grip is perfect and keeps the sock in place all day. I would definitely order true to size as the fit was perfect. I was surprised to find these socks at the price I did, especially when I got the socks in both black and white.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Best non-slip no show sock!
Size: 6-10, Color: Black
I love these socks! I wear them mostly with my slip on vans. The are thin so your feet can breathe (I hate thick socks). They have a grip on the heal so that they don't slip off of your feet, and it actually works! My only negative about these socks would be that if you have bigger than a size 8 foot, I would not purchase them because they do run a bit small. I wear a size 7 and they fit perfectly! They do look very tiny upon unpacking, but they stretch to the according size. I would also recommend letting them air dry after washing them and not putting them in the dryer. The first pair I purchased, I made the mistake of drying them and they shrank to an unbelievably small size. I've had my second set of socks for over 4 months now and have not had any problems since Ive been air drying them. I have not encountered any problems with them tearing as other have stated. Even though these are thin socks, they seem to be made quite well in my opinion.
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Reviewed in the United States on December 5, 2022
★★★★★ 5
I buy these again and again through the years!
Size: Medium, Color: Austin Brown Assorted (6-pairs)
Love these. After a year or two I wear holes in the bottoms because I wear them so much. Worth the little bit higher price because of the fit and comfort. Love how they are truly no show
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Reviewed in the United States on October 18, 2025
★★★★★ 4
Good quality but tight on toes
Size: 6-10, Color: White/Assorted
These are great socks that stay in place, but they scrunch my toes together like crazy. My feet are normal width. When I first started wearing them I noticed my feet would ache after an hour or two.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
My New Favorite Socks
Size: 6-10, Color: Halo Gray/Assorted
These have quickly become mine and my mom's favorite socks. We wear them with tennis shoes, Hey Dudes, and more. The fabric is incredibly soft and comfortable, they do not budge/fall in my shoe, and are extremely well made. I have become so attached to these socks, that I no longer want any other brand.
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Reviewed in the United States on July 4, 2025
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