1 5

Argon 18

2026

SUM Ultegra Di2

SUM Ultegra Di2

$8,500.00 CAD
$8,500.00 CAD
Sale Sold out
Shipping calculated at checkout.
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Pick up could take up to 10 days

Not all our bikes are stored at our retail location so in store pick up for bikes could take up to 10 days.

Please contact the store for more information on estimated pick up ETA.

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Other colour and size options might be available for speical order.

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Decisions, decisions… made easy. With a bike that gives you flat-out advantage on the climbs, the sprints and the straightaways, the only decision you’ll need to make is how nice you want to be to the other guys.

A rider-oriented design approach ensures a frame that is both rooted and responsive, with a ride experience most aero frames can’t match. With a layup engineered to maximize aerodynamics while keeping weight low, the design process for the Sum allowed us to strip away all unnecessary weight within the new aero profile tube shapes - all while maintaining maximum power transfer.

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Details

Specifications

Frame - SUM
Fork - SUM specific
Headset - FSA Headset NO.55R 1.5'' + 3D
Integrated Cables - Yes
Wheels - Scope R4
Tires - Vittoria Corsa N.EXT TLR 28mm
Tire Clearance - 30C (32mm)
Bottom Bracket - BB Ultegra SM-BB72
Front Derailleur - Shimano Ultegra Di2 R8150
Rear Derailleur - Shimano Ultegra Di2 R8150
Crankset - Shimano Ultegra R8100 52/36
Chain - Shimano Ultegra CN-M8100
Cassette - Shimano Ultegra CS-R8100 11-30
Brakes - Shimano Ultegra Di2 R8170
Rotors - Shimano Ultegra RT-CL800 / F:160mm R:140mm
Shifters - Shimano Ultegra Di2 R8170
Handlebar - FSA Energy SCR Compact
Stem - FSA SMR-II
Bar Tape - Ciclovation LEATHER TOUCH Tornado Gloss
Saddle - Repente Quasar
Seatpost - SUM specific

We make every effort to ensure accuracy, but reserve the right to update specifications & prices without notification. Specifications may not be as shown in photo.

Discounted Items Are Final Sale

Please visit our Return/Exchange Policy page for more information.

Shipping

This bike is not eligible for shipping

Geometry Chart