2026 Jan Janssen Sector Base
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
S | M | L | XL | XXL | |
Stack | 552mm | 586mm | 611mm | 635mm | 655mm |
Reach | 362mm | 370mm | 384mm | 397mm | 420mm |
Stack to Reach Ratio | 1.52:1 | 1.58:1 | 1.59:1 | 1.6:1 | 1.56:1 |
Seat Tube Length, C-T | 500mm | 530mm | 560mm | 580mm | 630mm |
Top Tube Length, Effective/Horizontal HT Top | 536mm | 552mm | 568mm | 588mm | — |
Top Tube Length, Actual C-C | — | — | — | — | 580mm |
Top Tube Slope | 8.1deg | 8.5deg | 7.8deg | 8deg | 5deg |
Head Tube Angle | 69.5deg | 71deg | 72.5deg | 72.5deg | 71deg |
Seat Tube Angle | 74deg | 73.5deg | 73.5deg | 73.5deg | 73deg |
Head Tube Length | 120mm | 150mm | 170mm | 195mm | 235mm |
Bottom Bracket Drop | 70mm | 70mm | 65mm | 65mm | — |
Bottom Bracket Height | 286mm | 286mm | 291mm | 291mm | — |
Chainstay Length | 430mm | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 424.3mm | 424.3mm | 425.1mm | 425.1mm | — |
Front-Center | 595.9mm | 599.8mm | 606.4mm | 624.3mm | — |
Front-Center Horizontal | 591.7mm | 595.7mm | 602.9mm | 620.9mm | — |
Wheelbase | 1016mm | 1020mm | 1028mm | 1046mm | 1089mm |
Fork Offset/Rake | 45mm | 45mm | 45mm | 45mm | — |
Trail | 85.1mm very high | 75mm high | 65.1mm high | 65.1mm high | — — |
Mechanical Trail | 79.7mm | 70.9mm | 62.1mm | 62.1mm | — |
Wheel Flop | 27.9mm | 23.1mm | 18.7mm | 18.7mm | — |
Tire to Pedal Spindle | 69.9mm 170 mm cranks | 73.8mm 170 mm cranks | 80.4mm 170 mm cranks | 98.3mm 170 mm cranks | — 170 mm cranks |
Pedal Spindle to Ground Clearance | 116mm 170 mm cranks | 116mm 170 mm cranks | 121mm 170 mm cranks | 121mm 170 mm cranks | — 170 mm cranks |
Base Build
S | M | L | XL | XXL | |
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 | 45mm | 45mm | 45mm | 45mm | 45mm |
Tire Width Max | 47mm | 47mm | 47mm | 47mm | 47mm |
Tire Outer Diameter | 712mm | 712mm | 712mm | 712mm | 712mm |
Bike Length with Tires | 1728mm | 1732mm | 1740mm | 1758mm | 1801mm |
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:www.janjanssen.nl, www.janjanssen.nl