GT Grade Carbon Ultegra review

‘EnduRoad’ machine aims to be the bike that can do it all

Our rating 
5.0 out of 5 star rating 5.0
GBP £2,599.99 RRP | USD $3,580.00

Our review

The Grade is a superb endurance bike that can take on anything
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GT forged its reputation in BMX and mountain biking in the 1970s and 80s, a reputation it keeps up today with its sponsorship of the all-conquering off-roading Atherton family. The Californian brand has also produced Olympic track bikes, though, and it sponsored the Lotto and Saturn road teams – and it’s going big on the road for 2015…

  • Highs: A wonderfully accomplished ride – whatever the surface
  • Lows: Mountain bike-style frame won’t appeal to all
  • Buy if: You want a unique bike with a real performance advantage

The Grade is arguably the most innovative bike in GT’s expanded line-up, and some of that innovation is well concealed. Kicked-up chainstays and curved and super-skinny seatstays – both designed for comfort – aren’t especially unusual, though here they end in GT’s signature ‘triple triangle’. But those seatstays are made from a solid glass fiber core wrapped in a layer of carbon fiber. GT’s tech-speak calls this ‘Dual Fiber Dynamic technology’ and claims that it is both strong and, naturally, ‘vertically compliant’. Comfortable, then.

GT’s skinny seatstays have a solid glass fibre core wrapped in a layer of carbon:
Robert Smith

GT’s skinny seatstays have a solid glass fiber core wrapped in a layer of carbon

The Grade is designed for versatility and long-distance, all-day comfort. GT believes the term ‘gravel racer’ is too niche, claiming the bike can tackle gran fondos, pavement and gravel with equal aplomb.

Its slightly slackened head angle and heightened head tube are there for comfort, and the frame is designed to accommodate wheels shod in rubber up to 35mm wide to increase its go-anywhere potential. The fork has a 15mm thru-axle for steering precision and to cope with the extra forces generated by hydraulic disc braking.

You could cyclocross on the Grade, and even if its 52/36 chainset and 11-32 cassette might offend ’cross purists, the wide gear range makes it more versatile. We rode the Grade on gravel tracks and singletrack and found that GT’s ambitions for the bike have been realised. It could handled pretty much anything we threw it at, which is no surprise from a company with so much off-road heritage.

…but managing to pull off this level smooth, speedy agility on tarmac in the same machine is impressive:
Robert Smith

The Grade’s smooth, speedy agility on tarmac is seriously impressive

But the big revelation is how good it feels on the road. Add a little pressure to the fat tires and it’s a real shock just how quickly the Grade will shift – yet all that rapidity is balanced with a smoothness and comfort on a par with Cannondale’s Synapse. That rear end, with its wide-spaced stays, has an almost softtail-like nature that makes this one of the most comfortable bikes we’ve tried. The ’cross-style flared bar gives confidence when riding in the drops off-road too.


The wheels are tough, and its gearing and handling make the Grade a genuine all-rounder. (Our test bike came with Ultegra Di2; production models will have mechanical Ultegra and Shimano’s hydraulic R685 brakes.) Gravel, dirt, mud, tarmac, gran fondos and big road rides are all within its compass. If you only have room for one bike it’s a serious contender.

Product Specifications


Name Grade Carbon Ultegra (15)
Brand GT

Available Sizes 51cm 53cm 55cm 56cm 58cm
Year 2015
Seatpost FSA K-Force Light carbon, 20mm set back, 27.2mm
Shifters Shimano BR-R685 11-speed
Stem 3T forged alloy SL 12.5cm
Trail 6.7
Weight (kg) 8.63
Wheelset Stan's Grail rims, DT Swiss 240 hubs, 15mm thru-axle front, 28 spokes front and rear
Weight (lb) 19.03
Saddle Fizik Aliante
Bottom Bracket Height (cm) 28
Chainstays (cm) 43
Seat Tube (cm) 52
Standover Height (cm) 82
Top Tube (cm) 57.5
Wheelbase (cm) 103
Seat Angle 72.5
Rear Wheel Weight 1850
Bottom Bracket Praxis Works PF30 bottom bracket adaptor
Frame Material GT EnduRoad carbon
Brakes Shimano R685 hydraulic w/cooling fins, IceTech Center-Lock rotors
Cassette Shimano Ultegra 11-speed 11-30
Chain Shimano 11-speed
Cranks Shimano Ultegra 52/36, 172.5mm
Fork GT Carbon tapered 1 1/8- 1¼in threadless steerer, 15mm thru-axle
Fork Offset 4.5
Front Derailleur braze-on front
Rear Tyre Continental Grand Sport Race 700x28
Front Tyre Continental Grand Sport Race 700x28
Front Wheel Weight 1450
Handlebar GT Drop Tune Ultra Light 14-degree flare 42cm
Head Angle 71.5
Headset Type Integrated TH sealed bearing
Rear Derailleur Shimano Ultegra 11-speed
Frame size tested 58cm