2020 OPEN Cycle U.P.P.E.R. Base M

Build

650B/27.5 in × 2.1 in

Insights

Average stack and reach vs trend of all-road/gravel bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
551mm
Reach
376mm
Stack to Reach Ratio
1.47:1
Seat Tube Length, C-T
540mm
Top Tube Length, Effective/Horizontal HT Top
549mm
Top Tube Slope
3.8deg
Head Tube Angle
71deg
Seat Tube Angle
72.5deg
Head Tube Length
130mm
Bottom Bracket Drop
70mm
Bottom Bracket Height
275.3mm
Chainstay Length
420mm
Chainstay Length Horizontal
414.1mm
Front-Center
598mm
Front-Center Horizontal
593.9mm
Wheelbase
1008mm
Fork Offset/Rake
50mm
Trail
66mm
high
Mechanical Trail
62.4mm
Wheel Flop
20.3mm
Standover Height
767mm
Tire to Pedal Spindle Distance
With 170 mm cranks
82.7mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
105.3mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.1in
Tire Outer Diameter
690.7mm
Bike Length with Tires
1698.7mm
Suspension Type
Rigid, non-suspension corrected
Bar Type
Drop Bar
Frame Material
Carbon/Composite
Fork Material
Carbon/Composite
Brake Type
Disc

Published Sizing Recommendations

Height
5 ft 7 in
to
5 ft 11 in
Source:https://opencycle.com/UP