Origine Théorème GR Ultra M4

2025 MountainCross-country Manufacturer page

Origine Théorème GR Ultra M4, color Silk White

Price: Not published

Prices shown first for United States
Europe: €3,403 Last known price
Suspension: Rigid
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 159–170
MD 167–179
LG 176–189
XL 186–200

Components

3 of 15 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

High modulus carbon Not identified

Suspension

1 part

Fork

Rigid MTB Not identified

Drivetrain

5 parts

Bottom bracket

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

No power meter Not identified
Rear derailleur

GRX 820 1x12v Not identified

Brakes

1 part

Brakes

Stirrups in transmission Not identified

Wheels and tires

2 parts

Rims

Polaris C25 R Not identified
Tires

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

Cockpit and contact points

5 parts

Handlebar
- Ritchey Comp ErgoMax
Pedals

Without pedals Not identified
Saddle

X3 Flow Boost Not identified
Seatpost

30.9 Not identified
Stem

Mountain Trail TFS Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 434mm

Stack 608mm

Wheelbase 1123mm

Head angle 68.5°

Seat angle 74.3°

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	412	434	467	475
Stackmm	598	608	622	636
Seat tube lengthmm	395	435	475	525
Head tube lengthmm	90	100	115	130
Head tube angle	68.5°	68.5°	68.5°	68.5°
Seat tube angle	74.3°	74.3°	74.2°	74.2°
Chainstay lengthmm	430	430	430	430
Wheelbasemm	1097	1123	1148	1175
Front centermm	674	700	725	752
Bottom bracket dropmm	60	60	60	60
Bottom bracket heightmm	314	314	314	314
Fork rakemm	44	44	44	44
Trailmm	100	100	114	100
Stack/reach ratio	1.45	1.40	1.33	1.34
Suspension and parts
Crank lengthmm	170	170	170	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
Frame weight: 0.18 kg

0.4 lb

Suspension

Suspension configuration: Rigid

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″
Travel: Front: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

1 measure

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

Shifting

Mechanical

222 of 1,647 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2025
Sample: 1,647 bicycles with this information
Coverage: 95.9% 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

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

Differences across 2025 builds
Specification	This bicycle Origine Théorème GR Ultra M4	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	0.18 kg	Not informed	0.73 kg	0.07 kg	0.6 kg	0.09 kg
Fork material	Not informed	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Suspension
Suspension configuration	Rigid	Hardtail	Hardtail	Hardtail	Hardtail	Hardtail
Front travel	Not informed	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
Suspension	Rigid	Hardtail	Hardtail	Hardtail	Hardtail	Hardtail
Fork spring	Not informed	Air	Air	Not informed	Not informed	Not informed