2018 MEC National Base

	X-Small	Small	Medium	Large	X-Large
Stack	549mm	562mm	583mm	603mm	627mm
Reach	362mm	374mm	382mm	385mm	403mm
Stack to Reach Ratio	1.52:1	1.5:1	1.53:1	1.57:1	1.56:1
Seat Tube Length, C-T	470mm	500mm	530mm	560mm	590mm
Seat Tube Length, C-C	430mm	460mm	490mm	520mm	550mm
Top Tube Length, Effective/Horizontal Unknown	520mm	535mm	555mm	570mm	595mm
Head Tube Angle	70deg	71deg	71.5deg	72deg	72deg
Seat Tube Angle, Unknown	74deg	74deg	73.5deg	73deg	73deg
Head Tube Length	120mm	130mm	150mm	170mm	195mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm	75mm
Bottom Bracket Height	268mm	268mm	268mm	268mm	268mm
Chainstay Length	450mm	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	443.7mm	443.7mm	443.7mm	443.7mm	443.7mm
Front-Center	592mm	598mm	609mm	614mm	639mm
Front-Center Horizontal	587.3mm	593.3mm	604.3mm	609.3mm	634.3mm
Wheelbase	1031mm	1037mm	1048mm	1053mm	1078mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	381mm	381mm	381mm	381mm	381mm
Trail	77mm high	70.5mm high	67.3mm high	64.1mm mid/neutral	64.1mm mid/neutral
Mechanical Trail	72.3mm	66.7mm	63.8mm	61mm	61mm
Wheel Flop	24.7mm	21.7mm	20.3mm	18.9mm	18.9mm
Standover Height	719mm	740mm	764mm	788mm	814mm
Tire to Pedal Spindle	79mm 170 mm cranks	85mm 170 mm cranks	91mm 175 mm cranks	96mm 175 mm cranks	121mm 175 mm cranks
Pedal Spindle to Ground Clearance	98mm 170 mm cranks	98mm 170 mm cranks	93mm 175 mm cranks	93mm 175 mm cranks	93mm 175 mm cranks

Published Sizing Recommendations

Height

5 ft 0 in

5 ft 4 in

5 ft 3 in

5 ft 7 in

5 ft 6 in

5 ft 10 in

5 ft 9 in

6 ft 1 in

6 ft 0 in

6 ft 4 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:https://geometrygeeks.bike/bike/mec-national-2018-2019/