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Stack and reach

Some tubes use estimated defaults where OEM values were missing.

Measurement	Argon 18Sum 2025	Argon 18Sum 2024
Stackmm	564	564
Reachmm	380	380
Head tube angle°	72.0	72.0
Seat tube angle°	73.5	73.5
Chainstaymm	415	415
Wheelbasemm	1006	1006
BB dropmm	73	73
BB heightmm	—	—
Standovermm	—	—

Relaxed/Aggressiveness

Add a close match

Look 765 Optimum 2022Near Argon 18 Sum · XS · 530 mm / 370 mmAdd to this compare
Look 765 Optimum 2023Near Argon 18 Sum · XS · 530 mm / 370 mmAdd to this compare
Look 765 Optimum 2024Near Argon 18 Sum · XS · 530 mm / 370 mmAdd to this compare

Cockpit for the selected size

Part	Sum M	Sum M
Stem	100 mm	100 mm
Bar	420 mm	420 mm
Crank	172.5 mm	172.5 mm

Reviews

Argon 18 Sum

ARGON 18 SUM 2025 FIRST LOOKYouTube · 2025
In this video we cover a first look at the new argon 18 Sum in british racing green. Ask any question you have.

Argon 18 Sum

Argon 18 Sum Pro road bike reviewCyclist · 2024