Argon 18 | Sum Pro Road Carbon Frameset

RIDE QUALITY
For the classics to the centuries, the SUM Pro is engineered to keep you in churning out the watts no matter what the course - or the competition - throws at you. A rider-oriented design approach ensures a frame that is both rooted and responsive with a ride experience most aero frames can’t match.

• Sizing updated from Gallium Pro, better tiered across the range (e.g. medium is now a bit smaller)
• Compliance ensured through D-shaped seat-post and indented seat tube, dropped seat stays and slender toptube.
• Stiffness and power transfer is equivalent to the Gallium Pro Disc, our WorldTour champion.
• 3D system for better positioning and fit. Allows you to raise the top bearing (raising the cockpit) without losing any stiffness.

LIGHTWEIGHT
Bring on the climbs: the design process for the SUM Pro allowed us to strip away all  unnecessary weight within the new aero profile tube shapes - all while maintaining maximum power transfer.

• Pro-level optimized layup at 850g (medium, painted frame)
• Slender seattube and seatpost profiles to keep weight down
• Chainstays of optimal size for weight and power transfer

MODERN AND VERSATILE
Loaded with all the features you expect, to make your ride easier.

• Next-generation 3D system, offering full cable integration
• Fully integrated cabling
• Open platform for wider choice of components
• integrated seatpost clamp
• E-shifting optimized
• New RD hanger, 7g lighter and more discreet
• Removeable FD hanger
• Stainless steel chainsuck guard
• Generous tire clearance (30c)