2017 Chumba Cycles URSA 29plus Backcountry Base SM
Build
700C/29 in × 3 in
Insights
Average stack and reach vs trend of hardtail cross-country mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 595mm |
| Reach | 404mm |
| Stack to Reach Ratio | 1.47:1 |
| Seat Tube Length, C-T | 381mm |
| Top Tube Length, Effective/Horizontal Center | 585mm |
| Top Tube Slope | 24.1deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 90mm |
| Bottom Bracket Drop | 56mm |
| Bottom Bracket Height | 331.2mm |
| Chainstay Length | 460mm |
| Chainstay Length Max | 460mm |
| Chainstay Length Horizontal | 456.6mm |
| Chainstay Length Horizontal Max | 456.6mm |
| Front-Center | 652.8mm |
| Front-Center Horizontal | 650.4mm |
| Wheelbase | 1107mm |
| Wheelbase Max | 1107mm |
| Fork Offset/Rake | 36.9mm |
| Fork Length (Axle-To-Crown) | 490mm |
| Trail | 109.1mm very high |
| Mechanical Trail | 101.9mm |
| Wheel Flop | 36.5mm |
| Standover Height | 736.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 95.6mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 161.2mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 3in |
| Tire Outer Diameter | 774.4mm |
| Bike Length with Tires | 1881.4mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:Bike Counterculture Geometry Database