Name: 2026 Megamo Upon Base
Brand: Megamo

	S	M	L	XL
Stack	555mm	578mm	603mm	628mm
Reach	376mm	398mm	416mm	430mm
Stack to Reach Ratio	1.48:1	1.45:1	1.45:1	1.46:1
Seat Tube Length, Unknown	450mm	500mm	540mm	580mm
Top Tube Length, Effective/Horizontal HT Top	522mm	553mm	578mm	599mm
Top Tube Slope	13.7deg	10.2deg	8.3deg	6.7deg
Head Tube Angle	70.8deg	71deg	71deg	71deg
Seat Tube Angle	75.2deg	75deg	75deg	75deg
Head Tube Length	119mm	142mm	169mm	196mm
Bottom Bracket Drop	87mm	87mm	87mm	87mm
Bottom Bracket Height	266mm	266mm	266mm	266mm
Chainstay Length	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	426.2mm	426.2mm	426.2mm	426.2mm
Front-Center	603.1mm	630.8mm	657.6mm	682.4mm
Front-Center Horizontal	596.8mm	624.8mm	651.8mm	676.8mm
Wheelbase	1023mm	1051mm	1078mm	1103mm
Fork Offset/Rake	54.6mm	54.6mm	55mm	57.2mm
Trail	65.1mm high	63.8mm mid/neutral	63.4mm mid/neutral	61mm mid/neutral
Mechanical Trail	61.5mm	60.4mm	60mm	57.7mm
Wheel Flop	20.2mm	19.7mm	19.5mm	18.8mm
Tire to Pedal Spindle	85.1mm 165 mm cranks	112.8mm 165 mm cranks	134.6mm 170 mm cranks	159.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	101mm 165 mm cranks	101mm 165 mm cranks	96mm 170 mm cranks	96mm 170 mm cranks

Published Sizing Recommendations

Height

—

167 cm

182 cm

180 cm

196 cm

192 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.megamo.com/en/e-bike/e-road/upon

2026 Megamo Upon Base