--- product_id: 452041433 title: "SHIMANO Ultegra Fc-R8100 Crankset Grey, 172.5Mm, 50-34T | bike-cranksets-and-accessories" brand: "shimano" price: "$633.13" currency: USD in_stock: true category: "Shimano" url: https://www.desertcart.us/products/452041433-shimano-ultegra-fc-r8100-crankset-grey-172-5mm-50-34t store_origin: US region: United States of America --- # Multiple arm lengths (160-175mm) 12-speed hyperglide tech Hollowtech aluminum arm SHIMANO Ultegra Fc-R8100 Crankset Grey, 172.5Mm, 50-34T | bike-cranksets-and-accessories **Brand:** shimano **Price:** $633.13 **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Shift into the future of road cycling with Ultegra precision! ## Quick Answers - **What is this?** SHIMANO Ultegra Fc-R8100 Crankset Grey, 172.5Mm, 50-34T | bike-cranksets-and-accessories by shimano - **How much does it cost?** $633.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/452041433-shimano-ultegra-fc-r8100-crankset-grey-172-5mm-50-34t) ## Best For - shimano enthusiasts ## Why This Product - Trusted shimano brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Custom Fit Arm Lengths:** Choose from 160mm to 175mm to perfectly match your riding style and biomechanics for maximum efficiency. - • **Plug-and-Play Compatibility:** Standard 24mm shell ensures effortless upgrades and swaps within Shimano’s 11 and 12-speed groupsets. - • **Precision 12-Speed Shifting:** Experience seamless gear transitions with Shimano’s latest hyperglide technology, engineered for the ultimate road performance. - • **Versatile Chainring Options:** 50-34T or 52-36T chainrings provide the ideal balance between speed and climbing power on any paved terrain. - • **Lightweight Hollowtech Aluminum:** Ride faster and longer with a durable yet featherlight crank arm designed to optimize power transfer. ## Overview The SHIMANO Ultegra FC-R8100 Crankset is a cutting-edge 12-speed road bike component featuring hollowtech aluminum arms available in multiple lengths (160-175mm) and versatile 50-34T or 52-36T chainrings. Designed for seamless gear shifts and lightweight durability, it fits standard 24mm shells for easy integration with Shimano’s latest groupsets, making it the go-to choice for serious cyclists seeking performance and reliability on paved roads. ## Description 12-speeds of range and a host of hyperglide technologies comes standard on the Shimano Ultegra FC-R8100 Crankset. This new offering from Shimano continues the sleek look and gets us cruising down old loops and new roads. The 12-speeds of range is new to Shimano lineup and gets a quality crank to match. The 24mm shell is standard on Shimano and doesn't change with the new generation, allowing for easy swaps from our 11-speed groups. ## Features - Arm Material: Hollowtech aluminum - Arm Length: 160mm, 165mm, 172.5mm, 175mm - Chainring Sizes: 50-34t, 52-36t - Bolt Circle Diameter: 110 - Bolts: 4 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B1F98PPQ | | Additional Features | Portable | | Age Range Description | Adult | | Best Sellers Rank | #423,706 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #459 in Bike Cranksets | | Bicycle Drivetrain Type | Chain drive | | Bike Type | Road Bike | | Brand Name | SHIMANO | | Color | Grey | | Customer Reviews | 5.0 5.0 out of 5 stars (6) | | Included Components | Crankset | | Intended Riding Terrain | Paved Roads | | Is Assembly Required | No | | Item Weight | 2.9 Pounds | | Manufacturer | Shimano | | Model Name | Ultegra FC-8100 12-Speed Crankset | | Model Number | Shimano | | Model Year | 2000 | | Number Of Speeds | 12 | | Power Source | Battery Powered | | Size | 172.5mm, 50-34T | | Specific Uses For Product | Crankset | | Style Name | Crankset | | Suspension Type | Dual | | UPC | 192790894089 | | Unit Count | 1.0 Count | | Warranty Description | Limited Warranty | ## Product Details - **Age Range (Description):** Adult - **Bike Type:** Road Bike - **Brand:** SHIMANO - **Color:** Grey - **Included Components:** Crankset - **Number of Speeds:** 12 - **Size:** 172.5mm, 50-34T - **Special Feature:** Portable - **Specific Uses For Product:** Crankset - **Suspension Type:** Dual ## Images ![SHIMANO Ultegra Fc-R8100 Crankset Grey, 172.5Mm, 50-34T | bike-cranksets-and-accessories - Image 1](https://m.media-amazon.com/images/I/61fgDeMZGDL.jpg) ![SHIMANO Ultegra Fc-R8100 Crankset Grey, 172.5Mm, 50-34T | bike-cranksets-and-accessories - Image 2](https://m.media-amazon.com/images/I/61+FWmqfl2L.jpg) ![SHIMANO Ultegra Fc-R8100 Crankset Grey, 172.5Mm, 50-34T | bike-cranksets-and-accessories - Image 3](https://m.media-amazon.com/images/I/51vyeBBAGlL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/452041433-shimano-ultegra-fc-r8100-crankset-grey-172-5mm-50-34t](https://www.desertcart.us/products/452041433-shimano-ultegra-fc-r8100-crankset-grey-172-5mm-50-34t) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-19*