2026 Origine Cycles Theoreme GR Ultra

	S	M	L	XL
Stack	598mm	608mm	622mm	636mm
Reach	412mm	434mm	467mm	475mm
Stack to Reach Ratio	1.45:1	1.4:1	1.33:1	1.34:1
Seat Tube Length, C-T	395mm	435mm	475mm	525mm
Top Tube Length, Effective/Horizontal HT Top	580mm	605mm	630mm	655mm
Top Tube Slope	22.8deg	18.9deg	15.5deg	12deg
Head Tube Angle	68.5deg	68.5deg	68.5deg	68.5deg
Seat Tube Angle	74.3deg	74.3deg	74.2deg	74.2deg
Head Tube Length	90mm	100mm	115mm	130mm
Bottom Bracket Drop	60mm	60mm	60mm	60mm
Bottom Bracket Height	308.2mm	308.2mm	308.2mm	308.2mm
Chainstay Length	430mm	430mm	430mm	430mm
Chainstay Length Horizontal	425.8mm	425.8mm	425.8mm	425.8mm
Front-Center	673.9mm	699.8mm	724.7mm	751.6mm
Front-Center Horizontal	671.2mm	697.2mm	722.2mm	749.2mm
Wheelbase	1097mm	1123mm	1148mm	1175mm
Fork Offset/Rake	44mm	44mm	44mm	44mm
Trail	97.7mm very high	97.7mm very high	97.7mm very high	97.7mm very high
Mechanical Trail	90.9mm	90.9mm	90.9mm	90.9mm
Wheel Flop	33.3mm	33.3mm	33.3mm	33.3mm
Tire to Pedal Spindle	135.7mm 170 mm cranks	161.6mm 170 mm cranks	186.5mm 170 mm cranks	213.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	138.2mm 170 mm cranks	138.2mm 170 mm cranks	138.2mm 170 mm cranks	138.2mm 170 mm cranks

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://www.origine-cycles.com/fr-CH/velo-2659097-Theoreme-GR-Ultra-M4.html#detailAndGeo2

Geometry