2026 Origine Cycles Theoreme GR Ultra S
Build
700C/29 in × 2.25 in
Insights
Very aggressive stack and reach vs trend of off-road touring bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 598mm |
| Reach | 412mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-T | 395mm |
| Top Tube Length, Effective/Horizontal HT Top | 580mm |
| Top Tube Slope | 22.8deg |
| Head Tube Angle | 68.5deg |
| Seat Tube Angle | 74.3deg |
| Head Tube Length | 90mm |
| Bottom Bracket Drop | 60mm |
| Bottom Bracket Height | 308.2mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 425.8mm |
| Front-Center | 673.9mm |
| Front-Center Horizontal | 671.2mm |
| Wheelbase | 1097mm |
| Fork Offset/Rake | 44mm |
| Trail | 97.7mm very high |
| Mechanical Trail | 90.9mm |
| Wheel Flop | 33.3mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 135.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 138.2mm |
GR Ultra Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.25in |
| Tire Outer Diameter | 736.3mm |
| Bike Length with Tires | 1833.3mm |
| Suspension Type | Rigid, suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.origine-cycles.com/fr-CH/velo-2659097-Theoreme-GR-Ultra-M4.html#detailAndGeo2