Argon 18 Gallium Pro – 2019

Argon 18 Gallium Pro Tour-Level Race Bike

Argon 18 Gallium Pro


When you are looking for top tier race road bike, there are a few things you look for:

1) it's lightweight

2) it's efficient

3) its fun to ride

4) it's comfortable.

Whoa, looks like this bike checks all of the boxes then. The Argon 18 Gallium Pro is one of the best race road bikes on the market right now. This is in large part because of its construction and groups set.

The carbon frame that Argon 18 engineered really is good at everything. First of all, it's lightweight. At ~759 grams, you know you aren't dragging any extra weight with you. Furthermore, the frame is built with Argon 18's Horizontal Dual system. Essentially, this means the frame is split into two parts: the bottom half is thicker and made for power, while the top half is devoted to comfort. The power zone has a thicker head tube and bottom tube, meaning that the bike is stiffer and better for power transmission. However, the tubes on the top half of the frame are thinner and more flexible, meaning that the ride is made for maximum comfort. Combine this new tech with the 3D System Headtube, and you have a stiff beast that allows for perfect power transmission.

For the drivetrain, we have the super efficient and easy Shimano Ultegra Di2. This system is a completely wireless and electronic groupset. This means you never have to worry about cable routing or anything like that. The system is super quick, easy to use, and efficient to a T. Combine this with the Shimano Ultegra R8000 brakes, and you have an amazing system on speed control. Its shorter wheelbase means you have quick acceleration, while still maintaining maneuverability in the corners and turns. It goes, and it turns, the perfect combo, right?

Argon 18 Gallium Pro - The Bottom Line

If you are looking for the absolute best performing race road bike in our lineup, then the Gallium Pro is for you. With its electronic wireless Shimano Ultegra drivetrain, you get an incredibly efficient system for any sort of riding you will find on the road. Combine that with Argon 18's Horizontal Dual and 3D Headtube system, and you have an incredibly stiff and efficient bike for the road ahead. The best of all worlds, with absolutely zero compromises.

Specs are for the 2019 Argon18 Gallium Pro in the Shimano Ultrgra R8000 build.

Drivetrain: Shimano Ultegra Di2, a 11/28t cassette, and Shimano Ultegra 52/36 crankset.
Handlebar FSA K-Force Compact Carbon
Wheels: Vision TriMax 30KB
Tires: Vittoria Open Corsa Evo-CX 700×25
Sizes in our fleet: XS, S, L, XL
Finish: Black / White / Red
Weight (actual): 16.4lbs pounds / 7.45 kg / 7,450 gms
Frame: Argon 18 Gallium Pro Carbon
Stem FSA OS-99 Alloy
Chain Shimano Ultegra HG700
Brakes: Shimano Ultegra R8000
Rear Derailleur: Shimano Ultegra Di2 R8050
Saddle: Prologo Nago Evo Nack


Stem Height Recommended Frame Size
61-65 XXS
64-70 XS
69-74 S
74-78 M
77-82 L
82-88 XL
Virtual TT 49.9 cm. / 499mm 51.9 cm. / 519mm 53.9 cm. / 539mm 55.9 cm. / 559mm 57.7 cm. / 577mm 59.6 cm. / 596mm
Seat Tube Length 42 cm. / 420mm 45.5 cm. / 455mm 49.3 cm. / 493mm 53.0 cm. / 530mm 56.5 cm. / 565mm 59.5 cm. / 595mm
Head Tube Length 7.5 cm. / 75mm 8.5 cm. / 85mm 11.0 cm. / 110mm 14.0 cm. / 140mm 16.5 cm. / 165mm 18.5cm. / 185mm
Head Angle 71.0° 72.0° 72.7° 72.7° 72.7° 73.0°
Seat Angle 75.5° 74.5° 74.0° 73.5° 73.0° 72.5°
Bottom-Bracket Drop 6.5cm / 65mm 7.0cm / 70mm 7.5cm / 75mm 7.5cm / 75mm 7.5cm / 75mm 7.5cm / 75mm
Chainstay Length 40.6 cm. / 406mm 40.6 cm. / 406mm 40.6 cm. / 406mm 40.8 cm. / 408mm 41.0 cm. / 410mm 41.0 cm. / 410mm
Stack Height 47.4 cm. / 474mm 49.2 cm. / 492mm 52.3 cm. / 523mm 55.2 cm. / 552mm 57.5 cm. / 575mm 59.6 cm. / 596mm
Reach Length 37.4 cm. / 374mm 38.2 cm. / 382mm 38.9 cm. / 389mm 39.5 cm. / 395mm 40.1 cm. / 401mm 40.8 cm. / 408mm
Wheelbase 96.1cm. / 961mm 96.4cm. / 964mm 97.2cm. / 972mm 99.0cm. / 990mm 100.5cm. / 1005mm 101.6cm. / 1016mm


Try one or all of our bikes and save the credit for up to 6 months. We ship bikes nationwide for $49 and usually ship the same day.
Small restrictions apply for rental credit, see below.*

Purchase Price



Full Day Rental

$ 159

Afternoon Rental

$ 115

Argon 18 Gallium Pro – 2019 Videos

A walkaround of the Argon18 Gallium ProA walkaround of the Argon18 Gallium Pro

A long term review of the Gallium ProA long term review of the Gallium Pro

100% of any demo-rental can go towards the purchase of any bike, new or used

Try one or all of our bikes and save the credit for up to 6 months.
We ship bikes nationwide for a $49 flat fee.

Argon 18 Gallium Pro – 2019 Anatomy