2025 tlab x1 Base

	XS	S	M	L	XL
Stack	537mm	558mm	578mm	597mm	616mm
Reach	368mm	379mm	391mm	407mm	423mm
Stack to Reach Ratio	1.46:1	1.47:1	1.48:1	1.47:1	1.46:1
Seat Tube Length, C-T	470mm	500mm	530mm	560mm	580mm
Top Tube Length, Effective/Horizontal Center	527mm	544mm	562mm	584mm	606mm
Top Tube Slope	9.8deg	8.6deg	7.4deg	6.1deg	5.8deg
Head Tube Angle	70.5deg	71.25deg	71.5deg	71.5deg	71.5deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	120mm	140mm	160mm	180mm	200mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	283mm	283mm	283mm	283mm	283mm
Chainstay Length	426mm	426mm	426mm	426mm	426mm
Chainstay Length Horizontal	420.2mm	420.2mm	420.2mm	420.2mm	420.2mm
Front-Center	586mm	597mm	613mm	636mm	659mm
Front-Center Horizontal	585.8mm	596.8mm	613.8mm	635.8mm	658.8mm
Wheelbase	1006mm	1017mm	1034mm	1056mm	1079mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm
Trail	72mm high	67mm high	65.4mm high	65.4mm high	65.4mm high
Mechanical Trail	67.8mm	63.5mm	62mm	62mm	62mm
Wheel Flop	22.6mm	20.4mm	19.7mm	19.7mm	19.7mm
Standover Height	755mm	780mm	805mm	830mm	855mm
Tire to Pedal Spindle	63mm 170 mm cranks	74mm 170 mm cranks	90mm 170 mm cranks	113mm 170 mm cranks	136mm 170 mm cranks
Pedal Spindle to Ground Clearance	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 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://t-lab-bikes.com/en-ca/bikes/x1

Geometry