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 | 59 | 59 | 59 | 50 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 59 | 59 | 59 | 59 | 47 | 50 | 50 | 53 | 55 | 59 | 62 | |
Stack | — | — | — | — | 566mm | 61.8mm | 618mm | 618mm | 618mm | 618mm | 618mm | 618mm | 618mm | 669mm | 669mm | 669mm | 669mm | 536mm | 566mm | 566mm | 596mm | 618mm | 669mm | 700mm |
Reach | — | — | — | — | 38.9mm | 40.8mm | 40.8mm | 40.8mm | 40.8mm | 40.8mm | 40.8mm | 40.8mm | 40.8mm | 42.1mm | 42.1mm | 42.1mm | 42.1mm | 384mm | 389mm | 389mm | 399mm | 408mm | 421mm | 426mm |
Stack to Reach Ratio | — | — | — | — | 14.55:1 | 1.51:1 | 15.15:1 | 15.15:1 | 15.15:1 | 15.15:1 | 15.15:1 | 15.15:1 | 15.15:1 | 15.89:1 | 15.89:1 | 15.89:1 | 15.89:1 | 1.4:1 | 1.46:1 | 1.46:1 | 1.49:1 | 1.51:1 | 1.59:1 | 1.64:1 |
Seat Tube Length, C-T | — | — | — | — | — | 550mm | 550mm | 550mm | 550mm | 550mm | 550mm | 550mm | 55mm | 590mm | 59mm | 590mm | 590mm | 470mm | 500mm | 500mm | 530mm | 550mm | 590mm | 620mm |
Top Tube Length, Effective/Horizontal Center | — | — | — | — | 57.5mm | 610mm | 61mm | 61mm | 61mm | 61mm | 61mm | 61mm | 61mm | 64mm | 64mm | 64mm | 64mm | — | 575mm | — | — | — | — | — |
Top Tube Length, Effective/Horizontal Unknown | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 560mm | — | 575mm | 595mm | 610mm | 640mm | 655mm |
Top Tube Length, Actual C-C | — | — | — | — | 55.9mm | 593.1mm | 59.3mm | 59.3mm | 59.3mm | 59.3mm | 59.3mm | 59.3mm | 59.3mm | 62mm | 62mm | 62mm | 62mm | — | 559.1mm | — | — | — | — | — |
Top Tube Slope | — | — | — | — | 6deg | 6deg | 6deg | 6deg | 6deg | 6deg | 6deg | 6deg | 6deg | 7deg | 7deg | 7deg | 7deg | 6deg | 6deg | 6deg | 6deg | 6deg | 7deg | 7deg |
Head Tube Angle | — | — | — | — | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg | 70deg |
Seat Tube Angle | — | — | — | — | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg | 72deg |
Bottom Bracket Drop | — | — | — | — | 68mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 68mm | 68mm | 58mm | 58mm | 80mm | 80mm | 80mm |
Bottom Bracket Height | — | — | — | — | 272mm | 286mm | 286mm | 286mm | 286mm | 286mm | 286mm | 286mm | 286mm | 286mm | 286mm | 286mm | 286mm | 272mm | 272mm | 282mm | 282mm | 281mm | 281mm | 281mm |
Chainstay Length | — | — | — | — | 520mm | 535mm | 535mm | 535mm | 535mm | 535mm | 535mm | 535mm | 535mm | 545mm | 545mm | 545mm | 545mm | 515mm | 520mm | 520mm | 525mm | 535mm | 545mm | 555mm |
Chainstay Length Horizontal | — | — | — | — | 515.5mm | 529mm | 529mm | 529mm | 529mm | 529mm | 529mm | 529mm | 529mm | 539.1mm | 539.1mm | 539.1mm | 539.1mm | 510.5mm | 515.5mm | 516.8mm | 521.8mm | 529mm | 539.1mm | 549.2mm |
Front-Center | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 638.1mm | — | — | — | — | — |
Front-Center Horizontal | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 634.5mm | — | — | — | — | — |
Wheelbase | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1150mm | — | — | — | — | — |
Fork Offset/Rake | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 60.3mm | — | — | — | — | — |
Trail | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | — — | 59.5mm mid/​neutral | — — | — — | — — | — — | — — |
Mechanical Trail | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 56mm | — | — | — | — | — |
Wheel Flop | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 19.1mm | — | — | — | — | — |
Standover Height | — | — | — | — | 780mm | — | — | — | — | — | — | — | — | — | — | — | — | 750mm | 780mm | 780mm | 810mm | 835mm | 880mm | 910mm |
Tire to Pedal Spindle | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | 128.1mm 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks |
Pedal Spindle to Ground Clearance | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | — 170 mm cranks | 102mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 102mm 170 mm cranks | 102mm 170 mm cranks | 112mm 170 mm cranks | 112mm 170 mm cranks | 111mm 170 mm cranks | 111mm 170 mm cranks | 111mm 170 mm cranks |
Base Build
59 | 59 | 59 | 59 | 50 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 59 | 59 | 59 | 59 | 47 | 50 | 50 | 53 | 55 | 59 | 62 | |
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 | 650B/27.5 in 584 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 | 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 | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.25in | 2.25in | 2.25in | 2.25in | 48mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 48mm | 48mm | 48mm | 48mm | 50mm | 50mm | 50mm |
Tire Width Max | — | — | — | — | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm |
Tire Outer Diameter | 736.3mm | 736.3mm | 736.3mm | 736.3mm | 680mm | 732mm | 732mm | 732mm | 732mm | 732mm | 732mm | 732mm | 732mm | 732mm | 732mm | 732mm | 732mm | 680mm | 680mm | 680mm | 680mm | 722mm | 722mm | 722mm |
Bike Length with Tires | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1830mm | — | — | — | — | — |
Published Sizing Recommendations
PBH | — | — | — | — | — | 85.5 in to 89.5 in | 85.5 cm to 89.5 cm | 85.5 cm to 89.5 cm | 85.5 cm to 89.5 cm | 85.5 cm to 89.5 cm | 85.5 cm to 89.5 cm | 85.5 cm to 89.5 cm | 85.5 cm to 89.5 cm | 89.5 cm to 93.5 cm | 89.5 cm to 93.5 cm | 89.5 cm to 93.5 cm | 89.5 cm to 93.5 cm | 76.5 cm to 79.5 cm | — | 79.5 cm to 83.5 cm | 83.5 cm to 85.5 cm | 85.5 cm to 89.5 cm | 89.5 cm to 93.5 cm | 93.5 cm to |
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, 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