2025 Rivendell Bicycle Works Atlantis Base
- Category
- Off-road Touring
- Design
- Swept Back Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Rim brake
Geometry
59 | 55 | 55 | 59 | |
Stack | — | 61.8mm | 618mm | 669mm |
Reach | — | 40.8mm | 40.8mm | 42.1mm |
Stack to Reach Ratio | — | 1.51:1 | 15.15:1 | 15.89:1 |
Seat Tube Length, C-T | — | 550mm | 55mm | 59mm |
Top Tube Length, Effective/Horizontal Center | — | 610mm | 61mm | 64mm |
Top Tube Length, Actual C-C | — | 593.1mm | 59.3mm | 62mm |
Top Tube Slope | — | 6deg | 6deg | 7deg |
Head Tube Angle | — | 70deg | 70deg | 70deg |
Seat Tube Angle | — | 72deg | 72deg | 72deg |
Bottom Bracket Drop | — | 80mm | 80mm | 80mm |
Bottom Bracket Height | — | 286mm | 286mm | 286mm |
Chainstay Length | — | 535mm | 535mm | 545mm |
Chainstay Length Horizontal | — | 529mm | 529mm | 539.1mm |
Trail | — — | — — | — — | — — |
Mechanical Trail | — | — | — | — |
Wheel Flop | — | — | — | — |
Pedal Spindle to Ground Clearance | — 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks |
Base Build
59 | 55 | 55 | 59 | |
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 |
Tire Width | 2.25in | 55mm | 55mm | 55mm |
Tire Width Max | — | 55mm | 55mm | 55mm |
Tire Outer Diameter | 736.3mm | 732mm | 732mm | 732mm |
Published Sizing Recommendations
PBH | — | 85.5 in to 89.5 in | 85.5 cm to 89.5 cm | 89.5 cm to 93.5 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 ScaleCategory Trend
Off-road TouringSource:https://cdn.shopify.com/s/files/1/1403/7343/files/RBW_Bicycle_Geometries_-_March_2025.pdf?v=1742249878, https://cdn.shopify.com/s/files/1/1403/7343/files/RBW_Bicycle_Geometries_August_2025.pdf?v=1755816394