2025 Argon18 · RD

2025 Argon18 Sum Pro geometry

Name: 2025 Argon18 Sum Pro
Brand: Argon18

Full frame geometry for the 2025 Argon18 Sum Pro, size by size — stack, reach, angles and tube lengths.

Does this bike fit you? Get sized in minutes — no tape measure, no appointment.

Geometry by size

Size	Stack (mm)	Reach (mm)	Seat angle (°)	Head angle (°)	Head tube (mm)	Top tube (mm)	Seat tube (mm)	Standover (mm)	BB drop (mm)	Chainstay (mm)	Wheelbase (mm)
XXS	471	375	75	71.2	69	503	395	—	69	—	967
XXS 3D 15mm	485	370	75	71.2	84	503	395	676	69	410	967
XS	493	382	74.5	72.1	85	520	425	700	73	410	972
XXS 3D 25mm	495	367	75	71.2	94	503	395	676	69	410	967
XS 3D 15mm	507	377	74.5	72.1	100	520	425	700	73	410	972
S	516	389	74	72.7	101	538	460	727	77	410	975
XS 3D 25mm	517	374	74.5	72.1	110	520	425	700	73	410	972
S 3D 15mm	530	385	74	72.7	116	538	460	727	77	410	975
M	540	397	73.5	72.7	126	557	505	766	77	410	990
S 3D 25mm	540	382	74	72.7	126	538	460	727	77	410	975
M 3D 15mm	554	393	73.5	72.7	141	557	505	766	77	410	990
M 3D 25mm	564	390	73.5	72.7	151	557	505	766	77	410	990
L	565	405	73	72.7	152	578	550	804	77	410	1006
L 3D 15mm	579	401	73	72.7	167	578	550	804	77	410	1006
L 3D 25mm	589	398	73	72.7	177	578	550	804	77	410	1006
XL	592	414	72.5	73	180	600	595	841	77	410	1020
XL 3D 15mm	606	410	72.5	73	195	600	595	841	77	410	1020
XL 3D 25mm	616	407	72.5	73	205	600	595	841	77	410	1020

All measurements in millimetres unless marked (°) for angles.