2011 Centurion Backfire 29
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 100mm fork travel
- Features
- Disc brake
Very upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Very upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Very upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Very upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Very upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
41 cm | 46 cm | 51 cm | 56 cm | 61 cm | |
Stack | 632.1mm | 646.2mm | 662.6mm | 676.8mm | 707.5mm |
Reach | 376.1mm | 392mm | 400.2mm | 416.4mm | 415.2mm |
Stack to Reach Ratio | 1.68:1 | 1.65:1 | 1.66:1 | 1.63:1 | 1.7:1 |
Seat Tube Length, C-T | 410mm | 460mm | 510mm | 560mm | 610mm |
Seat Tube Length, C-C | 355mm | 407mm | 454mm | 503mm | 553mm |
Top Tube Length, Effective/Horizontal HT Top | 580mm | 600mm | 620mm | 640mm | 655mm |
Head Tube Angle | 70.5deg | 70.5deg | 71deg | 71deg | 71.5deg |
Effective Seat Tube Angle, ETT HT Top | 73deg | 73deg | 72.5deg | 72.5deg | 72deg |
Head Tube Length | 95mm | 110mm | 125mm | 140mm | 170mm |
Bottom Bracket Drop | 65mm | 65mm | 65mm | 65mm | 65mm |
Bottom Bracket Height | 303.2mm | 303.2mm | 303.2mm | 303.2mm | 303.2mm |
Chainstay Length | 455mm | 455mm | 455mm | 455mm | 455mm |
Chainstay Length Horizontal | 450.3mm | 450.3mm | 450.3mm | 450.3mm | 450.3mm |
Front-Center | 629mm | 649.9mm | 657.9mm | 678.8mm | 681.8mm |
Front-Center Horizontal | 625.7mm | 646.7mm | 654.7mm | 675.7mm | 678.7mm |
Wheelbase | 1076mm | 1097mm | 1105mm | 1126mm | 1129mm |
Fork Offset/Rake | 46mm | 46mm | 46mm | 46mm | 46mm |
Fork Length (Axle-To-Crown) | 505mm | 505mm | 505mm | 505mm | 505mm |
Trail | 81.6mm very high | 81.6mm very high | 78.1mm high | 78.1mm high | 74.7mm high |
Mechanical Trail | 76.9mm | 76.9mm | 73.9mm | 73.9mm | 70.8mm |
Wheel Flop | 25.7mm | 25.7mm | 24.1mm | 24.1mm | 22.5mm |
Tire to Pedal Spindle | 85.9mm 175 mm cranks | 106.8mm 175 mm cranks | 114.7mm 175 mm cranks | 135.6mm 175 mm cranks | 138.6mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 128.2mm 175 mm cranks | 128.2mm 175 mm cranks | 128.2mm 175 mm cranks | 128.2mm 175 mm cranks | 128.2mm 175 mm cranks |
29 Build
41 cm | 46 cm | 51 cm | 56 cm | 61 cm | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.25in | 2.25in | 2.25in | 2.25in | 2.25in |
Tire Outer Diameter | 736.3mm | 736.3mm | 736.3mm | 736.3mm | 736.3mm |
Bike Length with Tires | 1812.3mm | 1833.3mm | 1841.3mm | 1862.3mm | 1865.3mm |
Crank Length | 175mm | 175mm | 175mm | 175mm | 175mm |
Handlebar Width | 680mm | 680mm | 680mm | 680mm | 680mm |
Stem Angle | 6deg | 6deg | 6deg | 6deg | 6deg |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Hardtail Cross-country MTBSource:https://issuu.com/mcg_gmbh/docs/katalog_centurion_bikes_2011