2025 Author Guru Base
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
470 | 510 | 540 | 570 | |
Stack | 567mm | 586mm | 603mm | 624mm |
Reach | 381mm | 394mm | 406mm | 417mm |
Stack to Reach Ratio | 1.49:1 | 1.49:1 | 1.49:1 | 1.5:1 |
Seat Tube Length, C-T | 480mm | 510mm | 540mm | 570mm |
Top Tube Length, Effective/Horizontal HT Top | 549mm | 567mm | 585mm | 602mm |
Top Tube Slope | 11.7deg | 10.2deg | 8.7deg | 7.6deg |
Head Tube Angle | 70.5deg | 71deg | 71deg | 71deg |
Seat Tube Angle | 73.5deg | 73.5deg | 73.5deg | 73.5deg |
Head Tube Length | 130mm | 150mm | 170mm | 190mm |
Bottom Bracket Drop | 74mm | 74mm | 74mm | 74mm |
Bottom Bracket Height | 275mm | 275mm | 275mm | 275mm |
Chainstay Length | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 428.7mm | 428.7mm | 428.7mm | 428.7mm |
Front-Center | 610.8mm | 624.7mm | 644.6mm | 661.5mm |
Front-Center Horizontal | 606.3mm | 620.3mm | 640.3mm | 657.3mm |
Wheelbase | 1035mm | 1049mm | 1069mm | 1086mm |
Fork Offset/Rake | 47.9mm | 47.9mm | 47.9mm | 47.9mm |
Fork Length (Axle-To-Crown) | 408mm | 408mm | 408mm | 408mm |
Trail | 72.8mm high | 69.5mm high | 69.5mm high | 69.5mm high |
Mechanical Trail | 68.6mm | 65.7mm | 65.7mm | 65.7mm |
Wheel Flop | 22.9mm | 21.4mm | 21.4mm | 21.4mm |
Tire to Pedal Spindle | 91.8mm 170 mm cranks | 105.7mm 170 mm cranks | 125.6mm 170 mm cranks | 142.5mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 105mm 170 mm cranks | 105mm 170 mm cranks | 105mm 170 mm cranks | 105mm 170 mm cranks |
Base Build
470 | 510 | 540 | 570 | |
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 | 38mm | 38mm | 38mm | 38mm |
Tire Outer Diameter | 698mm | 698mm | 698mm | 698mm |
Bike Length with Tires | 1733mm | 1747mm | 1767mm | 1784mm |
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
All-road/GravelSource:http