2025 tlab r1 Base

	XS	S	M	L	XL
Stack	534mm	557mm	578mm	597mm	616mm
Reach	370mm	375mm	389mm	400mm	411mm
Stack to Reach Ratio	1.44:1	1.49:1	1.49:1	1.49:1	1.5:1
Seat Tube Length, C-T	450mm	480mm	510mm	540mm	560mm
Top Tube Length, Effective/Horizontal Center	522mm	534mm	554mm	570mm	587mm
Top Tube Slope	11.6deg	10.7deg	9.5deg	8.2deg	7.9deg
Head Tube Angle	71deg	72deg	72.5deg	72.5deg	72.5deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	130mm	150mm	170mm	190mm	210mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	276mm	276mm	276mm	276mm	276mm
Chainstay Length	411mm	411mm	411mm	411mm	411mm
Chainstay Length Horizontal	405mm	405mm	405mm	405mm	405mm
Front-Center	579mm	584mm	598mm	615mm	632mm
Front-Center Horizontal	580mm	584mm	598mm	615mm	632mm
Wheelbase	985mm	989mm	1003mm	1020mm	1037mm
Fork Offset/Rake	47mm	47mm	47mm	47mm	47mm
Trail	69.4mm high	63mm mid/neutral	59.8mm mid/neutral	59.8mm mid/neutral	59.8mm mid/neutral
Mechanical Trail	65.7mm	59.9mm	57mm	57mm	57mm
Wheel Flop	21.4mm	18.5mm	17.2mm	17.2mm	17.2mm
Standover Height	721mm	738mm	775mm	801mm	820mm
Tire to Pedal Spindle	63mm 170 mm cranks	68mm 170 mm cranks	82mm 170 mm cranks	99mm 170 mm cranks	116mm 170 mm cranks
Pedal Spindle to Ground Clearance	106mm 170 mm cranks	106mm 170 mm cranks	106mm 170 mm cranks	106mm 170 mm cranks	106mm 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/r1

Geometry