2019 Bulls Sentinel Base 51cm
Build
650B/27.5 in × 62 mm
Insights
Average stack and reach vs trend of hardtail cross-country mtb bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 619mm |
| Reach | 441mm |
| Stack to Reach Ratio | 1.4:1 |
| Seat Tube Length, C-T | 510mm |
| Top Tube Length, Effective/Horizontal HT Top | 630mm |
| Top Tube Slope | 12.5deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 40mm |
| Bottom Bracket Height | 314mm |
| Chainstay Length | 455mm |
| Chainstay Length Horizontal | 453.2mm |
| Trail | — — |
| Standover Height | 845mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | — |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 144mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 62mm |
| Tire Outer Diameter | 708mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Suspension Sag | 20% |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
| Features | E-bike |
Published Sizing Recommendations
| Height | 5 ft 10 in to 6 ft 2 in |
Source:https://www.bullsbikesusa.com/sentinel.html#bull_geomatric