2012 Specialized Bicycles Rockhopper 29 Base 15.5
Build
700C/29 in × 2 in
Insights
Somewhat 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 | 613mm |
| Reach | 388mm |
| Stack to Reach Ratio | 1.58:1 |
| Seat Tube Length, C-T | 394mm |
| Top Tube Length, Effective/Horizontal Center | 576mm |
| Top Tube Length, Actual C-C | 550mm |
| Head Tube Angle | 71deg |
| Effective Seat Tube Angle, Unknown | 73deg |
| Seat Tube Exit Angle | 73deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 63.5mm |
| Bottom Bracket Height | 298.3mm |
| Chainstay Length | 442mm |
| Chainstay Length Horizontal | 437.4mm |
| Front-Center | 629.8mm |
| Front-Center Horizontal | 626.6mm |
| Wheelbase | 1064mm |
| Fork Offset/Rake | 46.7mm |
| Trail | 75.2mm high |
| Mechanical Trail | 71.1mm |
| Wheel Flop | 23.2mm |
| Standover Height | 754mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 98mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 128.3mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2in |
| Tire Outer Diameter | 723.6mm |
| Bike Length with Tires | 1787.6mm |
| Crank Length | 170mm |
| Handlebar Width | 680mm |
| Stem Length | 75mm |
| Stem Angle | 7deg |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 80mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://www.specialized.com/us/en/rockhopper-29/p/37152