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Alchemy Aithon Road Frameset -2018

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Item # AOE0004

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  • Root Beer/Vanilla, 52cm ($4,999.00)
  • Root Beer/Vanilla, 54cm ($4,999.00)
  • Root Beer/Vanilla, 56cm ($4,999.00)
  • Root Beer/Vanilla, 58cm ($4,999.00)
  • Root Beer/Vanilla, 60cm ($4,999.00)
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The new landscape of cycling.

In the late '90s, we were racing on flexy, featherweight alloy frames that barely cleared 23mm tires. Some 20 years later, versatility, comfort, and stiffness have loosened weight's stranglehold on what makes a good bike—largely because those bend-in-the-wind aluminum tubes and tiny tires (at 120 psi, of course) get murdered by the kind of all-terrain adventure riding and racing that are reshaping the American cycling landscape. With carbon stiffness, race-minded tube shapes, and huge tire clearance, Alchemy's Aithon Road Frameset establishes itself as the brand's most versatile frame, addressing the needs of today's take-all-comers cyclist. It transitions from tarmac to gravel to dirt roads without sacrificing any of the efficiency that makes it a suitable road machine.

We should stress here that by "suitable," we mean competition-ready. Alchemy classifies the Aithon as a gravel race bike. The italics emphasis is ours in copy, but the inclusion of design elements borrowed from Alchemy's road framesets stresses the fact in practice. This includes the head tube from the aerodynamic Arion frame and the down tube from the Helios, Alchemy's all-purpose road race machine. That means it's stiff and aerodynamic enough for sprints and long-distance solo moves, but it also enjoys a bit of pneumatic suspension in the form of 38mm tire clearance. Unlike the Arion and the Helios (and our old flimsy alloy bikes), the Aithon's race doesn't end when the asphalt does.

The bike's multi-surface pedigree is further reinforced by the rear triangle, which features a special carbon layup designed to take the pain out of chattery corduroy and poorly graded gravel. This includes bowed seatstays, which operate like a leaf spring in order to provide a touch of engineered flex without compromising the drive efficiency of the oversized chainstays and built-up Alchemy dropouts. Efficiency and comfort are the priority here, fitting since the bike shares a name with the horses ridden to battle by some of the greatest heroes of Classical mythology.

We mention above that the Aithon may be Alchemy's most versatile bike. It also may be its prettiest. The gravel genre is largely defined by utility. Longer, more stable, bigger tire clearance—after all, gravel bikes are designed to abuse in questionable conditions on questionable surfaces. But the Athion's root beer finish bears some special attention for non-utilitarian reasons. It's a gorgeous shade, and it's transparent, so it still shows off Alchemy's award-winning carbon layup genius.

  • A gravel race bike that's just as fast on the road
  • Design elements borrowed from Alchemy's road race bikes
  • Award-winning carbon layup blends weight loss and stiffness gains
  • The carbon parade continues with an ENVE gravel fork
  • Disc brakes and 38mm tire clearance suited for all conditions
  • Unique root beer clear coat finish showcases layup with style
  • Made in Alchemy's Devner, CO workshop

Tech Specs

Frame Material:
carbon fiber
Wheel Size:
Fork Material:
carbon fiber
Headset Included:
yes, Cane Creek
Bottom Bracket Type:
Cable Routing:
Front Derailleur Mount:
34.9mm clamp-on
Brake Type:
flat-mount disc
Compatible Components:
mechanical, electronic
Seatpost Diameter:
Recommended Use:
gravel, road
Manufacturer Warranty:



Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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Geometry Chart



Seat Tube

Seat Tube

Effective Top Tube



Stand Over

Head Tube

Head Tube Angle

Seat Tube Angle

Bottom Bracket Height

Bottom Bracket Drop



52cm 49cm   52.2cm 54.7cm 36.4cm   12cm 72o 74o   7.4cm 41.6cm  
54cm 53.8cm   54.3cm 56.8cm 37.7cm   14cm 72.4o 73.8o   7.4cm 41.6cm  
56cm 56.2cm   56cm 58.8cm 38.5cm   16cm 72.8o 73.5o   7.4cm 41.6cm  
58cm 58cm   57.5cm 60.8cm 39.1cm   18cm 73o 73.2o   7.4cm 41.6cm  
60cm 59.5cm   60.1cm 62.8cm 40.5cm   20cm 73.2o 72.8o   7.4cm 41.6cm  

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Avg. ride time: 3h 12m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Carbon Detail

Cell phone quality, but worth pointing out the detail on the carbon. Get this frame in the sun and it's a stunner.

Carbon Detail