2021 Orbea Gain M20

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Carbon/Composite
Fork
Carbon/Composite
Features
Disc brake, E-bike
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

XS
S
M
L
XL
Stack
525mm
550mm
575mm
600mm
625mm
Reach
366mm
377mm
388mm
399mm
410mm
Stack to Reach Ratio
1.43:1
1.46:1
1.48:1
1.5:1
1.52:1
Seat Tube Length, C-T
455mm
485mm
515mm
545mm
575mm
Top Tube Length, Effective/Horizontal Center
507mm
530mm
547mm
571mm
589mm
Top Tube Slope
10deg
9.3deg
8.5deg
7.9deg
7.3deg
Head Tube Angle
71deg
71.5deg
72deg
72deg
72.5deg
Seat Tube Angle
75deg
74.5deg
74.5deg
74deg
74deg
Head Tube Length
95mm
120mm
146mm
172mm
196mm
Bottom Bracket Drop
76mm
76mm
74mm
74mm
74mm
Bottom Bracket Height
265mm
265mm
267mm
267mm
267mm
Chainstay Length
420mm
420mm
420mm
420mm
420mm
Chainstay Length Horizontal
413.1mm
413.1mm
413.4mm
413.4mm
413.4mm
Front-Center
578.1mm
592.8mm
612.6mm
631.5mm
639.8mm
Front-Center Horizontal
573.1mm
587.9mm
608.1mm
627.2mm
635.5mm
Wheelbase
986.1mm
1001mm
1021.5mm
1040.6mm
1049mm
Fork Offset/Rake
50mm
50mm
50mm
50mm
50mm
Fork Length (Axle-To-Crown)
400mm
400mm
400mm
400mm
400mm
Trail
64.5mm
mid/​neutral
61.4mm
mid/​neutral
58.2mm
mid/​neutral
58.2mm
mid/​neutral
55.1mm
mid/​neutral
Mechanical Trail
61mm
58.2mm
55.4mm
55.4mm
52.5mm
Wheel Flop
19.9mm
18.5mm
17.1mm
17.1mm
15.8mm
Standover Height
708mm
785.7mm
819.5mm
839mm
872.7mm
Tire to Pedal Spindle
67.1mm
170 mm cranks
81.8mm
170 mm cranks
101.6mm
170 mm cranks
120.5mm
170 mm cranks
128.8mm
170 mm cranks
Pedal Spindle to Ground Clearance
95mm
170 mm cranks
95mm
170 mm cranks
97mm
170 mm cranks
97mm
170 mm cranks
97mm
170 mm cranks

M20 Build

XS
S
M
L
XL
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
30mm
30mm
30mm
30mm
30mm
Tire Outer Diameter
682mm
682mm
682mm
682mm
682mm
Bike Length with Tires
1668.1mm
1683mm
1703.5mm
1722.6mm
1731mm

Published Sizing Recommendations

Height
150 cm
to
160 cm
160 cm
to
170 cm
170 cm
to
180 cm
180 cm
to
190 cm
190 cm
to
200 cm

Stack and Reach vs. Category Trend

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.

Learn more about the Upright/Aggressive Scale
Category Trend
Endurance Road
Source:https://www.orbea.com/be-en/ebikes/road/gain/cat/gain-m20