2021 Chromag Bikes Rootdown Base S
Build
700C/29 in × 2.5 in
Insights
Somewhat upright stack and reach vs trend of hardtail all-mountain/enduro mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 630mm |
| Reach | 421mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, C-T | 368mm |
| Top Tube Length, Effective/Horizontal HT Top | 578mm |
| Top Tube Slope | 28.2deg |
| Head Tube Angle | 64deg |
| Seat Tube Angle | 76deg |
| Head Tube Length | 95mm |
| Bottom Bracket Drop | 50.8mm |
| Bottom Bracket Height | 323.7mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 416.9mm |
| Front-Center | 761.8mm |
| Front-Center Horizontal | 760.1mm |
| Wheelbase | 1177mm |
| Fork Offset/Rake | 50.9mm |
| Trail | 126.1mm very high |
| Mechanical Trail | 113.3mm |
| Wheel Flop | 49.7mm |
| Standover Height | 677mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 217.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 153.7mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 749mm |
| Bike Length with Tires | 1926mm |
| Crank Length | 170mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 160mm |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 1 in to 5 ft 5 in |
Source:https://us.chromagbikes.com/products/rootdown-21