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Théorème GTR 29″

Théorème GTR 29″

High performance


High-performance, lightweight cross-country mountain bike

The Théorème GTR is a hardtail bike for those who don't have a second to lose.

Designed for competition, its performance, its response and its predictable steering provided by the High Modulus carbon fibres make it the favourite weapon of XC MTB track fans.

Coupled with total integration, steering lock limiter developed by our engineers and UDH hangar compatibility, the only thing left for you to do is get on the podium.

Select your model

Théorème GTR M5
Théorème GTR M5
Frameset
Origine
Théorème GTR
Fork
Rock Shox
Sid SL Ultimate Race Day 100mm Remote
Derailleurs
Sram
XX SL AXS T-Type
Crankset
Sram
XX SL Eagle T-Type 34 CL55
Cassette
Sram
XX Eagle 10-52 12 s
Wheelset
DT Swiss
XRC 1501 Spline
Seat post
Kind Shock
Rage-i Hydraulics
Handlebar
Ritchey
MTN 2x Carbon
Stem
Controltech
SLA TFS
Prix : 7 706 € Poids : 9 146 g
Théorème GTR M4
Théorème GTR M4
Frameset
Origine
Théorème GTR
Fork
Rock Shox
Sid SL Ultimate Race Day 100mm Remote
Derailleurs
Shimano
XTR M9200 Di2 1x12v
Crankset
Shimano
XTR M9200 32
Cassette
Shimano
XTR M9200 12s 10-51
Wheelset
Mavic
Crossmax SL Ultimate 30
Seat post
Kind Shock
Rage-i Hydraulics
Handlebar
Ritchey
MTN 2x Carbon
Stem
Controltech
SLA TFS
Prix : 7 260 € Poids : 9 446 g
Théorème GTR M3
Théorème GTR M3
Frameset
Origine
Théorème GTR
Fork
DT Swiss
F232 One 100mm Remote
Derailleurs
Shimano
XT M8100 12s
Crankset
Shimano
XT M8100 single 32
Cassette
Shimano
XT M8100 12s 10-51
Wheelset
Prymahl
Polaris C25 R
Seat post
Kind Shock
Rage-i Hydraulics
Handlebar
Ritchey
MTN 2x Carbon
Stem
Controltech
SLA TFS
Prix : 4 301 € Poids : 9 777 g
Théorème GTR M2
Théorème GTR M2
Frameset
Origine
Théorème GTR
Fork
Suntour
Axon 34 Elite 120mm Remote
Derailleurs
Sram
GX Eagle AXS T-Type
Crankset
Sram
GX Eagle T-Type 32 CL55
Cassette
Sram
GX Eagle 10-52 12 s
Wheelset
Prymahl
Polaris A25 Pro
Seat post
Ritchey
Zero offset WCS 30.9 400mm
Handlebar
Ritchey
MTN 2x Carbon
Stem
Controltech
SLA TFS
Prix : 4 393 € Poids : 9 525 g
Théorème GTR M1
Théorème GTR M1
Frameset
Origine
Théorème GTR
Fork
Suntour
Raidon 32 100mm
Derailleurs
Shimano
SLX M7100 1x12s
Crankset
Shimano
SLX M7100 single 32
Cassette
Shimano
SLX M7100 12s 10-51
Wheelset
Fulcrum
Red Zone 500
Seat post
Origine
Monobloc forged alu 0 Offset 30.9 400mm
Handlebar
Ritchey
MTN Rizer Comp 740
Stem
Controltech
SLA TFS
Prix : 2 659 € Poids : 10 815 g

Photo gallery

Théorème GTR 29″
Théorème GTR 29″
Théorème GTR 29″
Théorème GTR 29″
Théorème GTR 29″

Technological benefits

Theoreme Hardtail

Theoreme Hardtail

Discover the new Théorème hardtail, a concentrated powerhouse that highlights speed and performance. And as is always the case at Origine, these features are not at odds with comfort and accessibility - quite the contrary.

The technologies we have developed make our hardtail one of the lightest and best performing in the highly-competitive world of XC.
Dynamic Response

Dynamic Response

The Dynamic Response concept reflects Origine’s personality to obtain the very highest performance, while maintaining a certain level of comfort. The choice and lay up of carbon fibres have been designed to give priority to response over stiffness and to allow extremely rapid return after deformation.
Our engineers focused the bike’s build around the Dynamic Response concept. Rather than preventing the frame from deforming at various stress points (bottom bracket and the head tube when cornering) so as not to lose power transfer, the Théorème works more like a spring, an archer's bow for an extremely fast return following deformation.
As a result, it's more responsive, more predictable, even in series of fast, tight bends. It is also easier to steer and more comfortable on long rides, during those moments of tiredness or in winding, technical areas.
Integration

Integration

No more brake hoses banging against each other as you go over a scree, no more tree branches catching the bike and rider by the derailleur hoses. Where some might see this as an aesthetic advantage, we see integration as the solution to increasing the reliability and longevity of cables and hoses, well protected in the frame.

While developing this new platform, we also integrated the saddle clamp. Here too, this provides additional natural rigidity at the top tube/seat tube junction, reinforcing the frame's strength without any superfluous weight.
Steering lock

Steering lock

We used our in-house steering lock technology. To ensure safety for both rider and equipment, the steering has a maximum angle of rotation of 72° on each side. There's no chance of ripping the sheaths or hitting the handlebar end in the event of a fall.

This technology also eliminates the curvature at the top of the downtube, providing additional rigidity and even greater performance.
UDH compatibility

UDH compatibility

Theorem has been designed to meet today's standards. The UDH, the universal derailleur hanger, allows you to protect your frame, while being inexpensive and easy to find. This format is also compatible with direct-mount derailleurs, with no intermediate bracket. So you have access to the best the market has to offer.
GTO and GTR slips

GTO and GTR slips

One frame, two behaviors.

The GTO delivers the perfect mix of comfort, vibration absorption and performance. The result is an ultra-versatile MTB, from club outings to marathon XC and ultradistance. Whatever the discipline, GTO draping limits fatigue generation and allows you to push harder.

The GTR is uncompromising on performance. Light, responsive, everything you'd expect from a competition bike. But it wouldn't be an Origine if we hadn't gone to great lengths to keep it forgiving. So it remains accessible to all, and will push you to give your all in every situation.
Hand-painted in our workshops

Hand-painted in our workshops

Origine frames are painted in our workshops in northern France.

We have chosen to use only automotive-grade water-soluble paints.

Its resistance to impact and abrasion is far superior to that of frames painted in Asia, and its ecological impact is greatly reduced.

The Theorem is available as a single frame or as a complete bike.

It comes with a lifetime warranty and is fully customizable in the Configurator to match the tastes and expectations of all enthusiasts.
Tech specs

Tech specs

Tapered headset: IS42/28.6 - IS52/40
Bottom bracket: PF92
Seat post: 30.9
Max tyre width: 29x2.40"
Frame material: High modulus carbon
Brakes max: Post Mount disc brakes 160 rear (180)
Thru-axles (rear): 12x148 mm Boost
Chainrings(max): 36
Number of bottle cages: 2
Front fork travel: 100 or 120mm
Derailleur hangar: UDH

Customer reviews

What the press say

Théorème GR - Review and test by Gravel & Bike
Théorème GR - Review and test by Gravel & Bike
Par Gravel & Bike
Théorème GR - Tested during a bikepacking trip...
Théorème GR - Tested during a bikepacking trip...
Par Weelz
Axxome RR: Grinta presents this exceptional bike!
Axxome RR: Grinta presents this exceptional bike!
Par Grinta
Origine Racing Division, a sensational start
Origine Racing Division, a sensational start
Par Vélo Vert
Axxome GTO Ultra - Press test by Cyclist magazine
Axxome GTO Ultra - Press test by Cyclist magazine
Par Cyclist