Sum Pro

The Ultimate All-Round Road Bike - Argon 18 Sum Pro With the development of the Argon 18 Sum Pro, the Canadian company has introduced their ultimate all-rounder racing bike. Offering both aero-efficiency and a low weight worthy of the biggest Alpine climbs, the Sum Pro’s advanced carbon layup and race-ready geometry will help you race to the front of the pack. Over the past decade, bike manufacturers have gone from separating their road racing bike models into aero and lightweight categories. The idea being that you could have an aero bike for flat rides and races, and then switch to a lightweight climbing bike for days you spend in the mountains. The problem with that scenario is that rides and indeed races are seldom so mono-topographical. Nearly every ride will face a mix of climbs and open-space cross winds. That’s where bikes like the Argon 18 Sum Pro really shine. With a frame that weighs only 870 grams it climbs like a dream while the aero-optimized tube shapes allow it to cut t