2019 Specialized Bicycles Rockhopper Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Features
- Disc brake
Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
XS | S | M | L | XL | |
Stack | 586mm | 595mm | 605mm | 619mm | 633mm |
Reach | 380mm | 395mm | 418mm | 441mm | 462mm |
Stack to Reach Ratio | 1.54:1 | 1.51:1 | 1.45:1 | 1.4:1 | 1.37:1 |
Seat Tube Length, C-T | 370mm | 400mm | 430mm | 470mm | 520mm |
Top Tube Length, Effective/Horizontal Center | 549mm | 568mm | 595mm | 623mm | 649mm |
Top Tube Slope | 25.5deg | 22.6deg | 19.7deg | 16.3deg | 12.4deg |
Head Tube Angle | 69.8deg | 69.8deg | 69.8deg | 69.8deg | 69.8deg |
Seat Tube Angle | 73.6deg | 73.7deg | 73.8deg | 73.9deg | 74deg |
Head Tube Length | 110mm | 125mm | 95mm | 95mm | 95mm |
Bottom Bracket Drop | 57.5mm | 57.5mm | 57.5mm | 57.5mm | 57.5mm |
Bottom Bracket Height | 306.8mm | 306.8mm | 306.8mm | 306.8mm | 306.8mm |
Chainstay Length | 435mm | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 431.2mm | 431.2mm | 431.2mm | 431.2mm | 431.2mm |
Front-Center | 631.4mm | 649.4mm | 675.3mm | 704.2mm | 730.1mm |
Front-Center Horizontal | 628.8mm | 646.8mm | 672.8mm | 701.8mm | 727.8mm |
Wheelbase | 1060mm | 1078mm | 1104mm | 1133mm | 1159mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm | 51mm |
Fork Length (On-Axis) | 486mm | 496mm | 506mm | 506mm | 506mm |
Trail | 79.7mm high | 79.7mm high | 79.7mm high | 79.7mm high | 79.7mm high |
Mechanical Trail | 74.8mm | 74.8mm | 74.8mm | 74.8mm | 74.8mm |
Wheel Flop | 25.8mm | 25.8mm | 25.8mm | 25.8mm | 25.8mm |
Standover Height | 715mm | 750mm | 775mm | 814mm | 845mm |
Tire to Pedal Spindle | 102.1mm 165 mm cranks | 115mm 170 mm cranks | 135.9mm 175 mm cranks | 164.8mm 175 mm cranks | 190.7mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 141.8mm 165 mm cranks | 136.8mm 170 mm cranks | 131.8mm 175 mm cranks | 131.8mm 175 mm cranks | 131.8mm 175 mm cranks |
Base Build
XS | S | M | L | XL | |
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 | 2.1in | 2.1in | 2.1in | 2.1in | 2.1in |
Tire Outer Diameter | 728.7mm | 728.7mm | 728.7mm | 728.7mm | 728.7mm |
Bike Length with Tires | 1788.7mm | 1806.7mm | 1832.7mm | 1861.7mm | 1887.7mm |
Crank Length | 165mm | 170mm | 175mm | 175mm | 175mm |
Handlebar Width | 720mm | 720mm | 720mm | 720mm | 720mm |
Stem Length | 60mm | 70mm | 90mm | 100mm | 110mm |
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://www.specialized.com/us/en/mens-rockhopper/p/134064?color=240216-134064