2019 Specialized Bicycles Rockhopper Base XS
Build
700C/29 in × 2.1 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 | 586mm |
| Reach | 380mm |
| Stack to Reach Ratio | 1.54:1 |
| Seat Tube Length, C-T | 370mm |
| Top Tube Length, Effective/Horizontal Center | 549mm |
| Top Tube Slope | 25.5deg |
| Head Tube Angle | 69.8deg |
| Seat Tube Angle | 73.6deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 57.5mm |
| Bottom Bracket Height | 306.8mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 431.2mm |
| Front-Center | 631.4mm |
| Front-Center Horizontal | 628.8mm |
| Wheelbase | 1060mm |
| Fork Offset/Rake | 51mm |
| Fork Length (On-Axis) | 486mm |
| Trail | 79.7mm high |
| Mechanical Trail | 74.8mm |
| Wheel Flop | 25.8mm |
| Standover Height | 715mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 102.1mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 141.8mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.1in |
| Tire Outer Diameter | 728.7mm |
| Bike Length with Tires | 1788.7mm |
| Crank Length | 165mm |
| Handlebar Width | 720mm |
| Stem Length | 60mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/mens-rockhopper/p/134064?color=240216-134064