Cube Agree GTC Race review

Is the Cube’s ride as agreeable as its price?

Our rating 
4.0 out of 5 star rating 4.0
GBP £1,399.00 RRP

Our review

A great value package matching refined frame technology to a fine specification
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Gran Turismo Composite, in case you’re wondering. We all know what Agree means, but GTC, less so. Agree isn’t the most aspirational, thrusting and macho name for a bike model, but has been a staple of Cube’s lineup since the beginning – indeed, one of our testers owns a six-year old GTC Race, while the 2012 model scored highly in our sister mag Cycling Plus’s Bike of the Year lineup that year.

  • Highs: Efficient frame, full Ultegra groupset, wheelset
  • Lows: Seatpost and saddle combo could be more comfortable
  • Buy If: You want a bike with the swift heart of a race machine and all gradient capability

Things have definitely moved on in that time, as, seemingly, has the ethos of this model. Over the years it has progressed from being a pure-bred race machine to something a little more diluted as styles have changed. The graphics tell us that we’re riding Ready For Race Geometry, which is borne out by our 56cm model’s short 145mm head tube, giving plenty of room for the rider who wants to get down. Overall sizing is on the small side, and we’d consider sizing up from our usual choice in future, but with saddle setback sorted, and reasonable reach from the bar and stem, we easily got comfortable.

A full shimano ultegra groupset – gears and brakes – is a steal at this price:

A full Shimano Ultegra groupset – gears and brakes – is a steal at this price

The frame looks smooth and flows from tube to tube with subtle ridges adding stiffness where needed. The requisite beefy down tube and chainstays brace a massive bottom bracket area, containing a press-fit unit. Slim seatstays and a 27.2mm seatpost promise to look after your back end too, so it looks promising so far.

Components comprise a complete Ultegra groupset – a steal on a bike this competitively priced. The gearing supplied is somewhat at odds with the frame’s race designation and geometry though, with a common 50/34 road compact mated to a long cage rear derailleur and less common 11-32 cassette. For all round riding, this combination will get you absolutely anywhere – you’ll certainly not want for bail out gears if you take a trip somewhere brutally hilly – but if you want to go racing, there are a few oversized sprockets there that you probably won’t want to haul around.

Performance is slick and reliable, as always, the Ultegra levers in particular feeling ergonomically and mechanically excellent. The rear brake cable is routed thorugh the top tube, but all the other cables have external routing, which simplifies maintenance, but may also require more of it. Mavic’s improved Aksium S wheelset and Aksion tyre package are a solid and swift choice, a worthwhile step above many budget alternatives, and capable of handling some considerable use.

While the ride quality is on the racy side, generous gearing provides an insurance policy for steep climbs:

While the ride quality is on the racy side, generous gearing provides an insurance policy for steep climbs

The Cube acquitted itself well over several hours riding, the front end feeling like walking a happy dog, always inquisitive to see what’s around the next corner. It’s an efficient climber and packs a decent sprint too, with great power transfer and solidity in the right places. Cornering is accurate and helped by the file tread on the shoulders of the newer 25mm Aksion rubber, and the bike changes direction well, ideal for mid-corner flicks.


We did find the ride quite firm, certainly more race than endurance-orientated, although fitting a carbon seatpost and plusher saddle would definitely help. The Cube-branded finishing kit is a departure from the usual Syntace fare, and it performs well, with the bar in particular is a good shape. The Agree GTC Race does give off some mixed messages, but if you like a racy position and want to make swift progress without being beaten by the climbs, then this could be the bike for you.

Product Specifications


Name Agree GTC Race (15)
Brand Cube Bikes

Available Sizes 50cm 53cm 56cm 58cm 60cm 62cm 64cm
Rear Wheel Weight 1660
Wheelbase (cm) 99.5
Top Tube (cm) 55.5
Standover Height (cm) 77
Seat Tube (cm) 48
Chainstays (cm) 41.5
Bottom Bracket Height (cm) 27.5
Wheelset Mavic Aksium S
Weight (kg) 8.13
Stem Cube Performance Pro, 110mm
Shifters Shimano Ultegra
Seatpost Cube Performance Post, 27.2mm
Seat Angle 74
Saddle Selle Italia X1 Road
Rear Tyre Mavic Aksion, 65A Compound, 25mm
Bottom Bracket Press-Fit SMBB71- 41
Rear Derailleur Shimano Ultegra
Headset Type Cube I-t integrated, 1 1/8 - 1½in
Head Angle 71.5
Handlebar Cube Wing Race Bar, Compact 40cm
Front Wheel Weight 1220
Front Tyre Mavic Aksion, 65A Compound, 25mm
Front Derailleur Shimano Ultegra
Frame Material GTC Monocoque Twin Mold carbon
Fork Cube CSL Race Carbon, tapered
Cranks Shimano Ultegra, 50/34, Hollowtech II, 172.5mm
Chain Shimano Ultegra
Cassette Shimano Ultegra 11-32
Brakes Shimano Ultegra
Frame size tested 56cm