2011 Centurion Backfire 100 61 cm
Build
26 in × 1.95 in
Insights
Very upright 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
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Geometry
| Stack | 667.1mm |
| Reach | 400mm |
| Stack to Reach Ratio | 1.67:1 |
| Seat Tube Length, C-T | 610mm |
| Seat Tube Length, C-C | 525mm |
| Top Tube Length, Effective/Horizontal HT Top | 630mm |
| Head Tube Angle | 70.5deg |
| Seat Tube Angle | 71deg |
| Head Tube Length | 200mm |
| Bottom Bracket Drop | 30mm |
| Bottom Bracket Height | 299mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 423.9mm |
| Front-Center | 668.7mm |
| Front-Center Horizontal | 668.1mm |
| Wheelbase | 1092mm |
| Fork Offset/Rake | 40mm |
| Fork Length (On-Axis) | 470mm |
| Trail | 74.1mm high |
| Mechanical Trail | 69.8mm |
| Wheel Flop | 23.3mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 169.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 129mm |
100 Build
| Wheel Size | 26 inch (559mm BSD) |
| Tire Width | 1.95in |
| Tire Outer Diameter | 658.1mm |
| Bike Length with Tires | 1750.1mm |
| Stem Angle | 17deg |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Rim |
Source:http://web.archive.org/web/20110602114548/http://centurion.de/en_int/bikes/2011/27/MTB+Hardtails/Backfire+100#Geos