Origine Théorème FS GTR 120 M1

2025 MountainTrail Manufacturer page

Origine Théorème FS GTR 120 M1, color Titanium Grey

Price: Not published

Prices shown first for United States
Europe: €4,534 Last known price
Fork travel: 120 mm
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 153–170
MD 167–179
LG 176–189
XL 186–200

Components

6 of 16 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Ultra High modulus carbon Not identified

Suspension

1 part

Fork
- RockShox SID Select

Drivetrain

5 parts

Bottom bracket

PF92 Not identified
Cassette
- Shimano SLX CS-M7100 12 speeds
CS-M7100
Crankset
- Shimano Deore XT FC-M8100 12 speeds
FC-M8100
Power meter

No power meter Not identified
Rear derailleur
- Shimano Deore XT RD-M8100 12 speeds
RD-M8100

Brakes

1 part

Brakes
- Shimano Deore XT BR-M8200
BR-M8200

Wheels and tires

2 parts

Rims

Polaris A25 R Not identified
Tires

Force AM Competition Line 29x2.25, Availability mid March 2026 Not identified

Cockpit and contact points

6 parts

Grips
- Ritchey Superlogic
Handlebar

MTN 2x WCS 740 Not identified
Pedals

Without pedals Not identified
Saddle

Terra Ridon X5 Not identified
Seatpost

30.9 Not identified
Stem

SLA TFS Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 444mm

Stack 594mm

Wheelbase 1162mm

Head angle 66.9°

Seat angle 75.3°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	418	444	467	494
Stackmm	594	594	608	622
Seat tube lengthmm	410	440	470	500
Head tube lengthmm	90	90	105	120
Head tube angle	66.9°	66.9°	66.9°	66.9°
Seat tube angle	75.3°	75.3°	75.3°	75.3°
Chainstay lengthmm	435	435	435	435
Wheelbasemm	1137	1162	1193	1223
Front centermm	705	730	761	791
Bottom bracket dropmm	38	38	38	38
Bottom bracket heightmm	336	336	336	336
Fork rakemm	44	44	44	44
Trailmm	111	112	110	113
Stack/reach ratio	1.42	1.34	1.30	1.26
Suspension and parts
Crank lengthmm	170	170	175	175
Handlebar widthmm	740	740	740	740
Stem lengthmm	35	45	45	60

Not published by the manufacturer: Top tube length, Standover height, Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Aluminum
Frame weight: 0.32 kg

0.7 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 18.2 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
Tire clearance: Maximum tire width: 2.4″
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

4 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,808 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

18.2 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,382 bicycles with this information
Coverage: 74.5% of the class

Highest gear

92.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,382 bicycles with this information
Coverage: 74.5% of the class

Shifting

Mechanical

387 of 1,847 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,847 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 35.5 km/h

Total gear range 510%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 18.2–92.8 gear inches
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2025
Lowest gear: 1382 bicycles with this information, 74.5% of the class
Highest gear: 1382 bicycles with this information, 74.5% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Origine Théorème FS GTR 120 M1	Origine Théorème FS GTO 100 M1	Origine Théorème FS GTO 100 M2	Origine Théorème FS GTO 100 M3 AXS	Origine Théorème FS GTO 100 M4	Origine Théorème FS GTO 100 M5 AXS
Frame
Frame weight	0.32 kg	Not informed	0.73 kg	0.07 kg	0.6 kg	0.09 kg
Suspension
Front travel	120 mm	100 mm	100 mm	100 mm	100 mm	100 mm
Drivetrain
Smallest chainring	32	32	32	32	32	34
Largest chainring	32	32	32	32	32	34
Largest sprocket	51	51	51	52	51	52
Lowest gear	18.2 in	18.2 in	18.2 in	17.9 in	18.2 in	19.0 in
Highest gear	92.8 in	92.8 in	92.8 in	92.8 in	92.8 in	98.6 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Electronic	Electronic	Electronic
Other specifications
Fork spring	Not informed	Air	Air	Not informed	Not informed	Not informed

Changes since 2024
Specification	2024 Origine Théorème FS GTR 120 M1	This bicycle Origine Théorème FS GTR 120 M1
Frame
Frame weight	0.95 kg	0.32 kg
Suspension
Suspension configuration	Full suspension	Hardtail
Rear travel	120 mm	Not informed
Other specifications
Suspension	Full suspension	Hardtail
Tire width	2.2″	2.25″