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650B/27.5 in × 48 mm

Insights

Very aggressive stack and reach vs trend of off-road touring bikes
Design deviates from other sizes of Rivendell Bicycle Works Atlantis
Bar type unusual for category
This: Swept Back Bar
Category: Drop Bar
vs off-road touring bikes

Geometry

Stack
536mm
Reach
384mm
Stack to Reach Ratio
1.4:1
Seat Tube Length, C-T
470mm
Top Tube Length, Effective/Horizontal Unknown
560mm
Top Tube Slope
6deg
Head Tube Angle
70deg
Seat Tube Angle
72deg
Bottom Bracket Drop
68mm
Bottom Bracket Height
272mm
Chainstay Length
515mm
Chainstay Length Horizontal
510.5mm
Standover Height
750mm
Pedal Spindle to Ground Clearance
102mm
170 mm cranks

Build

Wheel Size
650B/27.5 in
584 mm BSD
Tire Width
48mm
Tire Outer Diameter
680mm
Suspension Type
Rigid, non-suspension corrected
Bar Type
Swept Back Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Rim

Meta

Actions
Source
https://cdn.shopify.com/s/files/1/1403/7343/files/RBW_Bicycle_Geometry_-_July_25.jpg?v=1770846580, https://cdn.shopify.com/s/files/1/1403/7343/files/RBW_Bicycle_Geometries_August_2025.pdf
Brand
Bike
Size
Category