	S	M	L	XL
Stack	625mm	634mm	643mm	656mm
Reach	433mm	458mm	478mm	498mm
Stack to Reach Ratio	1.44:1	1.38:1	1.35:1	1.32:1
Seat Tube Length, Unknown	380mm	400mm	420mm	460mm
Top Tube Length, Actual C-C	578mm	606mm	628mm	652mm
Top Tube Slope	26.2deg	24deg	22.2deg	19deg
Head Tube Angle	64.1deg	64.1deg	64.1deg	64.1deg
Seat Tube Angle	76.9deg	76.9deg	76.8deg	76.8deg
Head Tube Length	110mm	120mm	130mm	145mm
Bottom Bracket Drop	30mm	30mm	30mm	30mm
Bottom Bracket Height	344.5mm	344.5mm	344.5mm	283.5mm
Chainstay Length	440mm	440mm	445mm	445mm
Chainstay Length Horizontal	439mm	439mm	444mm	444mm
Front-Center	771mm	800mm	825mm	851mm
Front-Center Horizontal	772mm	802mm	826mm	853mm
Wheelbase	1211mm	1241mm	1270mm	1297mm
Fork Offset/Rake	45.1mm	45.6mm	45.3mm	45.9mm
Trail	131.7mm very high	131.1mm very high	131.5mm very high	101.2mm very high
Mechanical Trail	118.5mm	117.9mm	118.3mm	91mm
Wheel Flop	51.8mm	51.5mm	51.7mm	39.8mm
Standover Height	744mm	745mm	729mm	732mm
Tire to Pedal Spindle	226.5mm 170 mm cranks	255.5mm 170 mm cranks	280.5mm 170 mm cranks	367.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	174.5mm 170 mm cranks	174.5mm 170 mm cranks	174.5mm 170 mm cranks	113.5mm 170 mm cranks

Published Sizing Recommendations

Height

154 cm

165 cm

175 cm

185 cm

182 cm

193 cm

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.santacruzbicycles.com/it-it/collections/vala/products/vala-al-70-2026?variant=50867129024794

2026 Santa Cruz Bicycles Vala MX (hi) AL 70