	S	M	L	XL
Stack	563mm	589mm	615mm	643mm
Reach	390mm	405mm	420mm	420mm
Stack to Reach Ratio	1.44:1	1.45:1	1.46:1	1.53:1
Seat Tube Length, C-T	405mm	457mm	508mm	559mm
Top Tube Length, Actual C-C	546mm	574mm	602mm	622mm
Top Tube Slope	19.2deg	15.8deg	12.8deg	10.5deg
Head Tube Angle	70deg	71deg	72deg	73deg
Seat Tube Angle	75deg	74deg	74deg	73deg
Head Tube Length	140mm	165mm	190mm	215mm
Bottom Bracket Drop	72mm	72mm	72mm	72mm
Bottom Bracket Height	279mm	279mm	279mm	279mm
Chainstay Length	445mm	445mm	445mm	445mm
Chainstay Length Horizontal	439.1mm	439.1mm	439.1mm	439.1mm
Front-Center	619mm	637mm	654mm	657mm
Front-Center Horizontal	614.9mm	632.9mm	649.9mm	652.9mm
Wheelbase	1054mm	1072mm	1089mm	1092mm
Fork Offset/Rake	43.4mm	47.1mm	50.8mm	55.7mm
Fork Length (On-Axis)	398mm	398mm	398mm	398mm
Trail	81.6mm very high	71mm high	60.6mm mid/neutral	49mm mid/neutral
Mechanical Trail	76.7mm	67.1mm	57.7mm	46.9mm
Wheel Flop	26.2mm	21.9mm	17.8mm	13.7mm
Standover Height	727mm	768mm	809mm	850mm
Tire to Pedal Spindle	98mm 170 mm cranks	116mm 170 mm cranks	133mm 170 mm cranks	136mm 170 mm cranks
Pedal Spindle to Ground Clearance	109mm 170 mm cranks	109mm 170 mm cranks	109mm 170 mm cranks	109mm 170 mm cranks

Published Sizing Recommendations

Height

4 ft 11 in

5 ft 4 in

5 ft 8 in

6 ft 0 in

6 ft 5 in

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:xds.co

2026 X-Lab SP3 Base