Meet the best of the best: aero to match the Nitrogen, pure road performance to match the Gallium Pro, with race-ready handling and premium ride quality. The all-new Sum Pro features our most advanced layup and technologies to get you to the front of the group and keep you there, through the climbs, the corners, and the sprints.
All Together Faster
Quiver-killer? You want more than that. From the climbs to the crits, you’ll accept no compromises in aero performance, lightweight advantage, and flat-out, bunch sprint handling. CFD analysis shows the Sum Pro's aero performance as equivalent to the all-aero Nitrogen and 9% faster than the Gallium Pro Disc. A lightweight layup is complemented by a minimalist candy clearcoat directly over the carbon. Design details like dropped seatstays and an indented seattube assure compliance in all the right places to keep you rooted in the saddle. An updated size range reflects our knowledge of rider fit, providing the best handling and positioning across all sizes.
Light, fast and designed to keep you on the road all day, the all-new Sum Pro is your bike for the classics, the crits, the climbs… and any challenge you find in between.
Argon Fit System
Argon Fit System is designed to provide riders of all sizes with consistent performance and optimal positioning.
Road Race Geometry
Our road race geometry is designed around the razor-sharp reflexes and precision handling required for racers of all levels.
Pro Level Layup
We leave no room for compromise when we build bikes for the most demanding and passionate cyclists.
Argon 18’s proprietary 3D System is an integrated solution that extends the headtube for more positioning options.
Max tire size: 30c (32mm)
Max rim size: 35mm
Fork Length (Axle-to-crown): 37.4cm
XXS to XS: 4.8cm
S to XL: 4.4cm
BB standard: BB86
Hourglass-shaped headtube: Provides aero efficiency with maximum stiffness
Profiled fork legs: Deflect air away from the downtube for maximum aero advantage
Frame: SUM Pro
Fork: SUM Pro specific
Seatpost: SUM specific (included with frameset)
Headset: FSA ACR NO.55R 1.5''
Bottom bracket: SRAM DUB PF 86.5
Front derailleur: SRAM Rival eTAP AXS
Rear derailleur: SRAM Rival eTAP AXS (MAX 36T)
Crankset: SRAM Rival DUB 48/35
Cassette: SRAM Rival AXS XG 1250 10-30
Chain: SRAM Rival 12S 114L
Wheelset: Hunt 4 Season All-Road Centerlock 12x100/142 XDR
Tires: Vittoria Corsa TLR G2.0 700x25c
Brakes: SRAM Rival
Rotors: SRAM Centerlock Centerline / F:160mm R:140mm
Brake levers: SRAM Rival eTap AXS
Shifters: SRAM Rival eTap AXS
Handlebar: FSA SL-K SCR Compact
Stem: FSA ACR ST-OS-160
Bar Tape: Ciclovation LEATHER TOUCH Tornado Gloss
Saddle: Repente Prime 3.0