ULTEGRA’s new FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists curious about shorter crank arms.
An integral part of Shimano’s new 12-speed road lineup, the FC-R8100 crank builds upon Shimano’s legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, the ULTEGRA crank is now offered in lengths from 160 to 175 mm, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanical requirements.
FEATURES
- Optimal balance of stiffness, strength, weight and rotational performance
- HOLLOWGLIDE structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting
- 52-36 and 50-34 chainring options. 160, 165, 170, 172.5, and 175 mm crank arm lengths.
SPECIFICATIONS
| MODEL NO | FC-R8100 |
|---|---|
| SERIES | ULTEGRA R8100 Series |
| Color | Series color |
| Average weight | 711 (52-36T) 700 (50-34T) |
| Threaded bottom bracket shell width (mm)_70 | ✔ |
|---|---|
| Chainring combination | 52-36T 50-34T |
| Compatible bottom bracket type_Outboard | ✔ |
| Crank fixing screw included | ✔ |
| Crank arm length (mm)_160 | ✔ |
| Crank arm length (mm)_165 | ✔ |
| Crank arm length (mm)_170 | ✔ |
| Crank arm length (mm)_172.5 | ✔ |
| Crank arm length (mm)_175 | ✔ |
| Spider/Gear arms | 4 |
| HOLLOWGLIDE | ✔ |
| HOLLOWTECH II | ✔ |
| HOLLOWTECH crank arm | ✔ |
| Optional chain guard_Without chain/bash guard | ✔ |
| Recommended bottom bracket_Press-fit | SM-BB72-41B |
| Recommended bottom bracket_Threaded (normal) | SM-BBR60 |
| Threaded bottom bracket shell width (mm)_68 | ✔ |
| Q-factor (mm) | 148 |
| Chain line (mm) | 44.5 |
| Compatible chain | CN-M8100 |
| P.C.D. (mm) | 110 |
| Rear speeds | 12 |
| Arm Length | 160mm, 165mm, 170mm, 172.5mm, 175mm |
|---|---|
| Chainring | 50/34T, 52/36T |
Prompt Delivery and Professional Packaging
Due to our long-term partnership with UPS, FedEx, DHL and many other leading global carriers, we can provide an array of shipping options. Our warehouse staff are highly trained and will package your items in accordance with our exact and precise specifications. Your products will be subjected to an extensive inspection and be properly packaged prior to being delivered. We ship to hundreds of thousands of customers each day across different countries. This shows how we're dedicated to being the largest online retailer in the world. The warehouses are located in Europe as much as they are in the USA.
Orders that contain more than 1 item are assigned processing times in accordance with the item.
Prior to shipment the items, our staff will carry out a thorough inspection on the products you have ordered. The majority of orders will be shipped within 48 hours. The estimated delivery time is between 3 and 7 days.
Returns
Due to the multiple parties involved such as the factory and the warehouse, we're unable to effectively manage inventory. Therefore, the actual inventory could fluctuate at any moment. It is possible that the stocks could be depleted after your order has been processed.
Our policy lasts for thirty days. We cannot replace or refund your purchase if it has been 30 days since you purchased it.
In order to be eligible for a refund, your item must be in good condition and in the same condition as you received it. It must also be returned in the original packaging.
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