Thank you for visiting! A portion of each sale supports Bicycles for Humanity Colorado, helping us refurbish and donate bikes to those in need. Ride with impact. 🏁 Ride Smoother. Go Farther. The Specialized Roubaix SL4 Comp UDi2 is designed for riders who demand performance and comfort over long distances. With a lightweight carbon frame, endurance geometry, and Shimano Ultegra Di2 electronic shifting, this bike is built for all-day speed on rough or smooth roads. Whether you're taking on your first century ride or training for your next Gran Fondo, the Roubaix SL4 keeps you comfortable, efficient, and fast. ✅ Key Features Frame & Fork Frame: Specialized SL4 FACT 8r Carbon, Endurance Geometry, Zertz inserts, internal cable routing, OSBB Fork: Specialized FACT carbon, Zertz inserts, tapered steerer Drivetrain Shifters: Shimano Ultegra Di2, 11-speed Front Derailleur: Shimano Ultegra Di2 Rear Derailleur: Shimano Ultegra Di2 Cassette: Shimano 11-speed, 11-32T Crankset: Praxis Works TURN Zayante, 50/34T compact Bottom Bracket: OSBB, integrated Brakes Brakeset: Shimano 105, dual-pivot caliper Wheelset Rims: Axis 2.0 Front, Fulcrum Racing S-Four Rear Hubs: Axis Front, Fulcrum Rear Tires: Continental Gatorskin 23c Cockpit Handlebars: Specialized Comp, shallow drop, aluminum W/ New Bar Tape Stem: Specialized Comp Multi, 3D-forged alloy Seatpost: Specialized CG-R, FACT carbon, single-bolt Saddle: Specialized Romin Evo 📏 Size: 56cm Ideal for riders approximately 5'9" to 6'0" (175–183cm) in height. Please consult fit guides or message us with your measurements for a more personalized recommendation. 🧼 Condition The bike is in excellent used condition, with light signs of use (minor cosmetic wear only). The drivetrain and braking system function flawlessly, and the electronic shifting is quick and reliable. The bike has been: Professionally cleaned and tuned Inspected for structural integrity 💥 Why This Bike Stands Out Electronic Shifting: Ultegra Di2 delivers perfect shifts every time—no cables, no stretch, just smooth, consistent performance. Zertz Inserts: Dampen road vibration for a smoother, more comfortable ride on rough roads. Endurance Geometry: Longer wheelbase and a relaxed headtube angle give you stability and comfort without sacrificing speed. Carbon Compliance: The SL4 carbon layup offers stiffness where you need it and flex where you want it—for climbing, descending, or cruising. 🌍 Ride More. Give Back. By purchasing from Traveling Ground, you're supporting sustainable cycling and bike access initiatives around the world. Thank you for being part of the movement. 📦 Fast Shipping | Carefully Packed | Responsive Support 💬 Questions? Message us—we’re happy to help you find the perfect ride.