2019 Bulls Sentinel Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 120mm fork travel, 20% sag
- Features
- Disc brake, E-bike
Geometry
41cm | 46cm | 51cm | 56cm | |
Stack | 605mm | 605mm | 619mm | 654mm |
Reach | 411mm | 425mm | 441mm | 444mm |
Stack to Reach Ratio | 1.47:1 | 1.42:1 | 1.4:1 | 1.47:1 |
Seat Tube Length, C-T | 410mm | 460mm | 510mm | 560mm |
Top Tube Length, Effective/Horizontal HT Top | 590mm | 610mm | 630mm | 650mm |
Top Tube Slope | 21.9deg | 16.4deg | 12.5deg | 11.1deg |
Head Tube Angle | 69.5deg | 69.5deg | 69.5deg | 70deg |
Seat Tube Angle | 73.5deg | 73.5deg | 73.5deg | 72.5deg |
Head Tube Length | 110mm | 110mm | 125mm | 160mm |
Bottom Bracket Drop | 40mm | 40mm | 40mm | 40mm |
Bottom Bracket Height | 314mm | 314mm | 314mm | 314mm |
Chainstay Length | 455mm | 455mm | 455mm | 455mm |
Chainstay Length Horizontal | 453.2mm | 453.2mm | 453.2mm | 453.2mm |
Trail | — — | — — | — — | — — |
Mechanical Trail | — | — | — | — |
Wheel Flop | — | — | — | — |
Standover Height | 780mm | 810mm | 845mm | 885mm |
Pedal Spindle to Ground Clearance | 144mm 170 mm cranks | 159mm 155 mm cranks | 144mm 170 mm cranks | 144mm 170 mm cranks |
Base Build
41cm | 46cm | 51cm | 56cm | |
Wheel Size | 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 |
Tire Width | 62mm | 62mm | 62mm | 62mm |
Tire Outer Diameter | 708mm | 708mm | 708mm | 708mm |
Crank Length | — | 155mm | — | — |
Published Sizing Recommendations
Height | 5 ft 5 in to 5 ft 8 in | 5 ft 8 in to 5 ft 11 in | 5 ft 10 in to 6 ft 2 in | 6 ft 2 in to 6 ft 7 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
Hardtail Cross-country MTBSource:https://www.bullsbikesusa.com/sentinel.html#bull_geomatric