Argon 18’s all-new Sum Professional carbon street bike mixes up one of the best their aerodynamic Nitrogen and light-weight Gallium Professional street bikes needed to supply. Name it the sum of one of the best components of their Professional-level street racing platforms, mixed into one superbike…
Argon 18 Sum Professional all-rounder street bike
Argon 18 calls their new Sum Professional “one of the best of one of the best”. It’s simply as aerodynamic as their Nitrogen aero street bike, 9% quicker than the Gallium Professional, based on Argon 18’s CFD evaluation. It will get the identical gentle weight premium carbon layup as provided by the all-rounder Gallium Professional race bike, balancing race-ready stiffness with all-day rider consolation. And it refines an much more versatile, quick-handling geometry that’s prepared for street driving & racing.
It seems to have turned out so effectively, that it seems like Argon 18 will section out each the top-tier Gallium Professional & Nitrogen all year long, though the extra reasonably priced decrease carbon spec Gallium CS seems to dwell on. The all-new Sum Professional turns into Argon 18’s do-it-all, go-to race bike from Spring Classics to stage race days up the very best mountains.
It additionally seems to be the brand new all-rounder race bike of selection of UCI ProTeam Novo Nordisk – who will probably be racing a newly customized painted workforce version of the brand new Sum Professional fitted with new Shimano Dura-Ace Di2.
Argon 18 have particularly maximized the aero shaping of the Sum’s toptube, hourglass headtube & downtube to be extra quicker within the wind with out including further weight.
The dropped seatstays and formed seattube with rear-wheel cutout add in much more wind-cheating tech, whereas additionally growing rider consolation by permitting extra flex by the proprietary aero seatpost, with its hidden wedge clamp. Argon 18 says that quantities to an actual 30-35% extra rear compliance than the latest-generation Gallium Professional for higher long-ride consolation. Then up entrance, the legs of the fork had been formed to push air out & away from the bike to scale back total drag.
Argon 18 says the brand new Sum Professional with its Professional-level carbon layup weighs 850g (M painted body), simply ten grams greater than the Gallium Professional Disc with the aero upgrades. The Sum Professional can be paired with its personal Professional-only fork (with a separate UCI-approval) to avoid wasting extra weight & enhance stiffness. The usual Sum Elite body continues to be no slouch at a lightweight 890g (M w/ paint) with an Elite-level layup that Argon 18 refers to as trickle-down tech.
The brand new bikes all characteristic absolutely inside cable routing because of an FSA ACR headset system, making routing suitable with any trendy disc brake groupset – mechanical or digital shift. Curiously, Argo 18 has opted for separate FSA bar and stems for all of their builds, holding all cables out of sight however sustaining full cockpit adjustability as a substitute of utilizing any 1-piece bar+stem combos.
The bike now will get huge for street tire clearance for as much as 700 x 30c tires, which Argon 18 says is on a contemporary large wheelset measuring out as much as 32mm large precise – max 32mm large rims to suit between the stays, as effectively. The carbon Sum options 12mm thru-axles, flat mount disc brakes, and will get a pressfit BB86 backside bracket.
Revised match & street race geometry
Argon18 give the Sum Professional & Sum Elite the identical “Street Race” geometry of their large 6 dimension vary (XXS-XL), up to date to supply improved match & dealing with throughout all sizes – together with size-specific carbon layup stiffness optimization for smaller to bigger riders.
That’s additionally a part of utilizing the usual cockpit parts, which permits the brand new Sum to be completely match to all riders through Argon 18’s 3D+ becoming system that provides three headtube extensions (0, 15 & 25mm) for every body dimension to tweak body Stack with out sacrificing stiffness with typical steerer spacer stacks.
Argon 18 Sum Professional & Elite – Pricing, choices & availability
Making a brand new superbike doesn’t come low cost. The brand new Sum Professional seems to turn into Argon 18’s most costly street bike. From round $4200 / 3600€ for a Sum Professional frameset, that’s at the very least 9 hundred bucks greater than a Nitrogen. Even the marginally heavier normal spec’d carbon Sum Elite frameset at 2800€ is 100 bucks greater than the devoted aero street bike.
The brand new all-rounder Sum can be obtainable in a number of full bike construct choices relying in the marketplace with SRAM Drive AXS or Rival AXS eTap builds for essentially the most half. A Sum Elite Rival AXS full bike begins from $4900 (or $6500 on the Sum Professional frameset.)
And this higher-spec Sum Professional Drive AXS construct with Hunt 48 Limitless carbon wheels ratchets that as much as $8250. However it seems such as you’ll nonetheless have to attend some time.
Though Novo Nordisk already has their fleet, client bikes aren’t anticipated to reach in Argon 18 seller bike retailers globally till “late 2022”. Ask your native store for a extra detailed estimate for those who want a brand new race bike.