Reaction GTC Race 29

Reaction GTC Race 29

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Reaction GTC Race 29

A high-performance carbon 29er hardtail with all the advantages of the bigger 29in wheels but as agile as a 26in bike. The oversized tube diameters of the head tube and the PressFit bottom bracket guarantee optimum lateral stiffness. Internal Cable Routing delivers clean appearance and dirt protection. The GTC carbon frame is produced using the Twin Mold Monocoque technology. A post mount rear brake saves weight. Optimum strength to weight value results from the tapered head tube with integrated headset. Through Active Brake Cooling, a wing-like support in front of the brake, airflow is directed towards the brake disc. The high tech Rock Shox Reba RL air fork comes with Motion Control, PushLoc and 100mm of travel. The Syntace stem F149 is sturdy and long-lasting while the RFR Flat Race Bar offers perfect 29 inch handling. Shimano SLX and XT 3x10 components are very reliable. The Magura MT2 disc brakes offer confident performance on all terrain. The Sun Ringlé Radium 29 wheelset is lightweight and durable.

EQUIPMENT reaction gtc race 29

  • 15", 17", 19", 21", 23"
  • GTC Twin Mold Monocoque Technology 29er, Agile Ride Geometry
  • carbon ‘n’ white
  • Rock Shox Reba RL 29, Motion Control, PushLoc, 100mm
  • FSA Orbit I-t-R integrated, oben integriert 1 1/8", unten integriert 1 1/2"
  • Syntace F149 Oversized, Lenkerklemmung 31.8mm, 6°
  • RFR Flat Race Bar, 31,8x720 mm, 9°
  • CUBE Race Grip, 1-clamp
  • Shimano XT, RD-M781-SGSL, Shadow 10-speed
  • Shimano SLX FD-M671-D, direct mount, Down Swing
  • Shimano SLX SL-M670, 10-speed
  • Magura MT2 hydr. Disc brake (180/160mm)
  • Shimano SLX, FC-M670 Hollowtech II 42x32x24T, 175mm, Innenlager PressFit SM-BB91-41
  • Sun Ringlé Radium wheelset, 32 spokes
  • Schwalbe Rapid Rob 2.25
  • Selle Italia X1
  • RFR Prolight 31.6*400mm
  • RFR Varioclose 34.9mm
  • 11,2 kg
  • 416401

TEST RESULTS

DEALER SEARCH

GEOMETRY

Reaction GTC 29

Framesize

 

15"

17"

19"

"21"

23"

Seat tube mm

A

370

420

470

515

565

Seat tube Center-Center mm

A'

335

385

435

480

530

Top tube mm

B

563

564

576

597

612

Top tube - horizontal mm

B'

570

585

602

623

635

Seat tube angel Degree

C

73

73

73

73

73

Head tube angel Degree

D

69

70

70,5

70,5

70,5

Chain stays mm

E

440

440

440

440

440

Head tube mm

F

95

95

100

110

125

Wheelbase mm

G

1082

1086

1098

1119

1132

Bb-height to hub mm

H

-65

-65

-65

-65

-65

Reach mm

R

385

399

414

432

440

Stack mm

S

604

609

615

625

639

VIEW IN CATALOG

TECHNOLOGY

Twin Mold Technology

All GTC models are built using this complex manufacturing process. In this process possibly dangerous folding is eliminated by constant control of carbon fibres during the curing process. By using fixed internal forms at junction points the quantity of resin is considerably reduced and the fibres bonded more tightly together. The result is increased product safety and improved STW values.

Agile Ride Geometry

We ran innumerable tests to develop the Agile Ride Geometry in our 2012 series of big wheel bikes. This year we add the 650B wheelsize to the very well received portfolio. Three important details lead to the very agile character. Increased fork offsets let us achieve the same trail as our 26” bikes without having to steepen the head angle, thus maintaining generous toe clearance to the front wheel. Secondly we shortened the chain stays without compromising the seat angle. We invented a patented construction to mount the front derailleur to give us more tyre clearance while keeping a conventional seat angle, leading to a perfect riding position for every rider size. Last but not least we kept the BB height same as on our 26" bikes. These measures lead to a natural riding position. Every mountain biker will feel immediately at home on a CUBE 29er.

Integrated Cable Routing

Internally routed cables offer many advantages. Cables are protected from dirt for longer life, weight is saved thanks to the absence of external housing and the bike has a clean, sleek appearance.

Tapered Steerer

This new steerer tube design is stiffer than a conventional straight steerer and generates a more secure ride feel even in difficult terrain. Minimal flex at the front of the frame means that the greatest possible steering precision is generated. With the larger steerer the forks become more rigid. At the same time weight is saved due to the absence of bearing shells as the lower bearing is fully integrated into the head tube. On all of our CUBE carbon models the upper bearing shells are also directly in the frame, so that once more a few grams are saved and the energy transfer is very direct.

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Integrated Post Mount

The postmount system is found at all carbon fiber frames, the high end models of the touring bikes and the upper range aluminum models. The bolts and the IS adpater aren’t needed anymore, less parts mean less weight. In this case we save 30 grams. This may not sound a lot. But as you see, there is potential to save weigth in every detail.

Press Fit BB

With press-fit bearings, the bottom bracket bearings are pressed directly into the frame and not screwed in as usual. This gives a wider bottom bracket shell and allows to build a wider down tube and more broadly-spaced chainstays. Every millimetre of additional width gives a significant improvement in lateral stiffness.

Wet Paint Surface

On polished, brushed aluminium and all HPC frames, the logos and graphics are applied in multi-layer wet paint. We use this surface treatment technology mainly to save weight.

Frame Safe System

To protect our high-end aluminium frames from damage, they are built with the CUBE Frame Save System replaceable derailleur hanger. The mounting thread is in the hanger and not in the frame as usual. In case of a crash, this hanger can be easily and quickly replaced by a new one. 

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