2024 Circa Cycles Standard Geometry Base
- Category
- Endurance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
S | XS | M | L | XL | |
Stack | 556mm | 556mm | 577mm | 604mm | 624mm |
Reach | 371mm | 372mm | 379mm | 382mm | 396mm |
Stack to Reach Ratio | 1.5:1 | 1.49:1 | 1.52:1 | 1.58:1 | 1.58:1 |
Top Tube Length, Effective/Horizontal Unknown | 531mm | 510mm | 551mm | 566mm | 586mm |
Top Tube Slope | 7deg | 17deg | 7deg | 7deg | 7deg |
Head Tube Angle | 72deg | 72deg | 72deg | 72deg | 72deg |
Seat Tube Angle | 74deg | 74deg | 73.5deg | 73deg | 73deg |
Head Tube Length | 145mm | 145mm | 171mm | 195mm | 217mm |
Bottom Bracket Drop | 75mm | 75mm | 75mm | 75mm | 75mm |
Bottom Bracket Height | 264mm | 264mm | 264mm | 264mm | 264mm |
Chainstay Length Horizontal | 445mm | 445mm | 445mm | 445mm | 445mm |
Front-Center | 571mm | 571mm | 586.8mm | 596.7mm | 620.6mm |
Front-Center Horizontal | 566mm | 566mm | 582mm | 592mm | 616mm |
Wheelbase | 1011mm | 1011mm | 1027mm | 1037mm | 1061mm |
Fork Offset/Rake | 36.8mm | 35.9mm | 37.9mm | 36.3mm | 39.6mm |
Trail | 71.4mm high | 72.4mm high | 70.3mm high | 72mm high | 68.5mm high |
Mechanical Trail | 67.9mm | 68.9mm | 66.8mm | 68.5mm | 65.2mm |
Wheel Flop | 21mm | 21.3mm | 20.7mm | 21.2mm | 20.1mm |
Standover Height | 761mm | 708mm | 783mm | 806mm | 824mm |
Tire to Pedal Spindle | 62mm 170 mm cranks | 62mm 170 mm cranks | 77.8mm 170 mm cranks | 87.7mm 170 mm cranks | 111.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks |
Base Build
S | XS | 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 | 28mm | 28mm | 28mm | 28mm | 28mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1689mm | 1689mm | 1705mm | 1715mm | 1739mm |
Published Sizing Recommendations
Height | 5 ft 4 in to 5 ft 7 in | 5 ft 1 in to 5 ft 4 in | 5 ft 7 in to 5 ft 9 in | 5 ft 10 in to 6 ft 0 in | 6 ft 0 in to 6 ft 3 in |
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
Endurance RoadSource:https://ridecirca.com/mabel-frameset/