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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
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Description
Shimano Ultegra Di2 12-speed ST-R8170 Hydraulic Disc STI and CaliperHigh performance Ultegra wireless hydraulic servo wave disc brake Di2 sti's give you control, modulation and power with minimal effort in all riding conditions. Features: Wireless connectivity to the front and rear derailleurs for effortless trouble free gear shifts With Di2 technology shifting is easy and precise just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear
High performance Ultegra wireless hydraulic servo wave disc brake Di2 sti's give you control, modulation and power with minimal effort in all riding conditions.Features:
- Wireless connectivity to the front and rear derailleurs for effortless trouble free gear shifts
- With Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear
- Full and semi synchronized shifting programable, synchro shift compatible meaning a single shifter can control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi synchronized shifting means when a front shift is made the rear mech will automatically correct to the appropriate ratio
- Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold
- Drop bar sti with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano sti
- Hydraulic brake lever with servo wave provides excellent stopping power with less effort especially from the hood position
- Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear
- Finely tuneable reach adjusters for the levers enable custom fitment for all hands
- Levers use cr1632 batteries which last for approximately 1.5-2 years
- Kit contains bled st-r8170 sti, br-r8170 flat mount brake callipers with pads, hoses and mineral oil (without rotors or adapters)
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 25 reviews
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Product Reviews
★★★★★ 5
Durable and stylish
Color: Black
Bought this for my teenage daughter. The bag is super sturdy and a great deal for the price. All of the pockets help keep her organized and provide plenty of space for all she needs. The canvas is easy to clean and can be wiped with a rag. I plan to buy another in a fun color!
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Reviewed in the United States on September 20, 2025
★★★★★ 4
Nice looking medium sized backpack purse
Color: Pink
Although it says nylon in the description, mine is a soft pleather in a soft pink color. Although it has a lot of pockets for storage, it isn't large capacity. It is good for a wallet, phone, water bottle, sandwich, perhaps a cosmetic bag, and that's about it. I do not like pink accessories but this is a creamy light tone of pink and looks nice. The straps are adjustable and very comfortable in the same padded pleather. Lightweight.
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Reviewed in the United States on September 20, 2025
★★★★★ 5
Nice Backpack
Color: Beige
Nice soft beige color. A perfect backpack for me to take to work and school.
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Reviewed in the United States on October 18, 2025
★★★★★ 5
Great to take on a trip
Color: Black
We love to cruise and always take an extra backpack with us so we can load up on the travel booty and have a place to put it.
Works well as your "one plus" item on the airlines.
So the quality on this backpack is just fine. No issues at all. Nothing was falling apart or coming off. Very small when you fold it up which is great for packing in your suitcase. Holds a ton of stuff....
I'd do some shopping to make sure this fits your needs. There are a ton of backpack's in this price range and some appear to have more features.... Also looks... some are cooler looking, but that's just my opinion...even though I'm right...
This will do well for you as others will do too... You get a 30 day return policy with this so you could try it out first to see if you like it... if not, return it... nothing to loose...
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Reviewed in the United States on October 21, 2025
★★★★★ 5
Decent basic backpack
Color: Green
This is a good, basic backpack. It doesn't have a lot of bells and whistles, but it's a solid choice. The sizing is average, it will hold several books and notebooks. The padding felt adequate for most items, but I'm not sure how much I would trust it with an expensive Mac book. The straps were easy to adjust and padded enough. I appreciate that it could be folded up and put into another bag if you needed an extra bag while traveling - it would make a good day pack. Overall a good deal for what it is.
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Reviewed in the United States on October 18, 2025