2020 Specialized Bicycles Rockhopper Base S
Build
700C/29 in × 2.35 in
Insights
Average stack and reach vs trend of hardtail cross-country mtb bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 607mm |
| Reach | 405mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, C-T | 360mm |
| Top Tube Length, Effective/Horizontal Center | 586mm |
| Top Tube Slope | 27.3deg |
| Head Tube Angle | 68.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 95mm |
| Bottom Bracket Drop | 62mm |
| Bottom Bracket Height | 308.7mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 435.6mm |
| Front-Center | 672mm |
| Front-Center Horizontal | 669.4mm |
| Wheelbase | 1105mm |
| Fork Offset/Rake | 46mm |
| Fork Length, Unknown | 505mm |
| Trail | 96.6mm very high |
| Mechanical Trail | 89.9mm |
| Wheel Flop | 32.9mm |
| Standover Height | 732mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 131.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 138.7mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.35in |
| Tire Outer Diameter | 741.4mm |
| Bike Length with Tires | 1846.4mm |
| Crank Length | 170mm |
| Handlebar Width | 720mm |
| Stem Length | 45mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | N/A |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/rockhopper-sport/p/184114?color=291562-184114&searchText=91520-6602