2009 Specialized Rockhopper base 21
Build
26 in × 2 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
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Geometry
| Stack | 631.1mm |
| Reach | 445.2mm |
| Stack to Reach Ratio | 1.42:1 |
| Seat Tube Length, C-T | 533mm |
| Top Tube Length, Effective/Horizontal Center | 640mm |
| Top Tube Length, Actual C-C | 615mm |
| Top Tube Slope | 11.4deg |
| Head Tube Angle | 70deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 26.3mm |
| Bottom Bracket Height | 304mm |
| Chainstay Length | 426mm |
| Chainstay Length Horizontal | 425.2mm |
| Front-Center | 702.3mm |
| Front-Center Horizontal | 701.8mm |
| Wheelbase | 1127mm |
| Trail | — — |
| Standover Height | 820mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 197mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 129mm |
base Build
| Wheel Size | 26 inch (559mm BSD) |
| Tire Width | 2in |
| Tire Outer Diameter | 660.6mm |
| Bike Length with Tires | 1787.6mm |
| Crank Length | 175mm |
| Handlebar Width | 640mm |
| Stem Length | 90mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://www.specialized.com/us/en/rockhopper/p/22349?color=30780-22349&searchText=8192-5017