Argon 18 Krypton review

A ruthless, efficient ride

Our rating 
4.0 out of 5 star rating 4.0
GBP £2,199.99 RRP

Our review

The superb handling makes this bike a joy to descend and sprint on
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The Krypton frame has been designed around Argon 18’s Horizontal Dual System (HDS) concept: imagine a diagonal line from the top of the head-tube to the rear dropouts – everything below this is designed with maximum rigidity and stiffness for power transfer and handling, while everything above should be more flexible (vertically) to improve comfort.


It also has Argon 18’s 3D head-tube, which replaces standard headset spacers with threaded ones that match the head-tube diameter. rather than adding spacers above the headset’s top-bearing race, you screw them in below, effectively extending the head-tube. It should be better for headset bearing life and stress the fork less.

Get the bike out on the road and the front end feels sharp, direct and quick to respond. The same can be said about the whole bike. Out-of-the-saddle efforts are instantly rewarded, with no movement or flex, backed up by Fulcrum’s excellent Racing 5 wheels. These might not be the lightest wheels around but for the price we’d recommend them. They’re hardwearing, smooth rolling and have stayed true. The build also features the excellent 3T Ergosum/ARX Pro bar stem combo and Continental’s dependable 24mm GP tyres, as well as the carbon Campagnolo Centaur groupset.

Where the bike’s impressive control really comes into play is on more technical descents. It revels in fast, tight bends and switchbacks, with a great point and shoot nature. It certainly doesn’t do all the work for you though; it took some time to adapt to the evenly balanced, rigid feel. Sticking the Krypton into a corner at bigger lean angles requires faith and courage but the more you throw it over, the keener it feels.


On the flat it feels ruthlessly efficient, positive and powerful, so we were a little surprised it doesn’t feel quite so great on the climbs. It isn’t sluggish, it just feels neutral. But it does a great job of keeping any vibrations at bay, making for a smooth overall ride and coping with rough, scarred surfaces well. If you’re looking for a bike with great handling and truly efficient performance, this should be high on your list of potentials.

Product Specifications


Name Krypton (11)
Brand Argon 18

Description Continental Grand Prix 700x24 tyres
Rear Derailleur Campagnolo Centaur 10spd, alloy short cage,
Top Tube (cm) 58
Standover Height (cm) 82
Seat Tube (cm) 53
Chainstays (cm) 41
Bottom Bracket Height (cm) 27
Weight (lb) 17.6
Weight (kg) 8
Stem 3T ARX Pro forged alloy 12cm, 11/8in x oversized
Shifters Campagnolo Centaur Ergo QS 10spd
Seatpost Argon 18 ASP-1500 carbon, forged single-bolt clamp, 31.6x300mm
Saddle Prologo Nago padded vinyl, steel rails
Rims Fulcrum Racing 5, 20 spokes radial front, 24 2-cross/radial rear
Rear Wheel Weight 1585
Headset Type Integrated sealed cartridges, 11/4in bearings
Available Colours White & Carbon 12K
Handlebar 3T Ergosum Pro alloy, shallow anatomic
Front Wheel Weight 1130
Front Derailleur Campagnolo Centaur braze-on
Frame Weight 1350
Frame Material Carbon monocoque, forged dropouts.
Fork Weight 505
Fork All-carbon, 11/8in steerer, forged dropouts
Cranks Campagnolo Centaur Power-Torque compact, 172.5mm arms
Chain Campagnolo 10spd
Cassette Campagnolo Centaur 11-25 10spd
Brakes Campagnolo Centaur forged alloy dual pivot
Bottom Bracket Campagnolo external alloy cups, sealed cartridges
Available Sizes XXS 44-46cm / XS 47-50cm / S 51-53cm / M 54-56cm / L 57-59cm / XL 60-62cm Sloping
Wheelbase (cm) 100.5