2024 Curtis Slack Jack Base M
Build
700C/29 in × 40 mm
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 571mm |
| Reach | 395mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, Unknown | 490mm |
| Top Tube Slope | 10.7deg |
| Head Tube Angle | 68deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 76mm |
| Bottom Bracket Height | 275mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 428.3mm |
| Trail | — — |
| Tire to Pedal Spindle Distance With 170 mm cranks | — |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 105mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Drop Bar |
| Fork Travel | 40mm |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.curtisbikes.co.uk/slack-jack/