2011 Centurion Backfire 29 61 cm
Build
700C/29 in × 2.25 in
Insights
Very upright stack and reach vs trend of hardtail cross-country mtb bikes
Design deviates from other sizes of Centurion Backfire
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 707.5mm |
| Reach | 415.2mm |
| Stack to Reach Ratio | 1.7:1 |
| Seat Tube Length, C-T | 610mm |
| Seat Tube Length, C-C | 553mm |
| Top Tube Length, Effective/Horizontal HT Top | 655mm |
| Head Tube Angle | 71.5deg |
| Effective Seat Tube Angle, ETT HT Top | 72deg |
| Head Tube Length | 170mm |
| Bottom Bracket Drop | 65mm |
| Bottom Bracket Height | 303.2mm |
| Chainstay Length | 455mm |
| Chainstay Length Horizontal | 450.3mm |
| Front-Center | 681.8mm |
| Front-Center Horizontal | 678.7mm |
| Wheelbase | 1129mm |
| Fork Offset/Rake | 46mm |
| Fork Length (Axle-To-Crown) | 505mm |
| Trail | 74.7mm high |
| Mechanical Trail | 70.8mm |
| Wheel Flop | 22.5mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 138.6mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 128.2mm |
29 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.25in |
| Tire Outer Diameter | 736.3mm |
| Bike Length with Tires | 1865.3mm |
| Crank Length | 175mm |
| Handlebar Width | 680mm |
| Stem Angle | 6deg |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://issuu.com/mcg_gmbh/docs/katalog_centurion_bikes_2011