Sum Ultegra Di2

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  • Overview
  • Conquer every ride with the Argon 18 Sum Ultegra Di2. Designed for optimal performance, this road bike excels in climbs, flats, and sprints. Its rider-focused design ensures a responsive, lightweight frame for unmatched aerodynamics and power transfer.

Product details

Experience the ultimate road biking performance with the Argon 18 Sum Ultegra Di2. This exceptional road bike is designed to dominate every aspect of your ride, from challenging climbs to fast sprints and steady flats. The Argon 18 Sum Rival AXS offers a flat-out advantage, making every decision on the road effortless.

Crafted with a rider-oriented design, the frame of the Sum Ultegra Di2 is both rooted and responsive. Unlike many aero frames, it delivers an unmatched ride experience. The engineered layup maximises aerodynamics while keeping the weight impressively low. The new aero profile tube shapes have been meticulously designed to strip away unnecessary weight, ensuring maximum power transfer.

Whether you're an avid racer or a dedicated enthusiast, the Argon 18 Sum Ultegra Di2 is your ticket to a superior road biking experience. Elevate your rides and leave your competition behind with this top-tier road bike.


Component Specification
Frame SUM
Fork SUM specific
Headset FSA ACR NO.55R 1.5''
Integrated Cables Yes
Integrated Tools No
Wheels ATTEN L42 wheelset
Tires Vittoria Rubino Pro TLR G2.0 700x28c
Tire Clearance 30C (32mm)
Bottom Bracket Shimano SM-BB72
Front Derailleur Shimano Ultegra Di2 R8150
Rear Derailleur Shimano Ultegra Di2 R8150
Crankset Shimano Ultegra R8170
Chain Shimano Ultegra CN-M8100 12S
Cassette Shimano Ultegra CS-R8100 11-30
Brakes Shimano Ultegra Di2 R8150
Brake Levers Shimano Ultegra Di2 R8150
Rotors Shimano Ultegra RT-CL800 / F:160mm R:140mm
Shifters Shimano Ultegra Di2 R8170
Other Components  
Handlebar FSA Energy SCR Compact
Stem FSA ACR ST-OS-160
Bar Tape Ciclovation LEATHER TOUCH Tornado Gloss
Saddle Repente Quasar
Seatpost SUM specific