2020 Gunnar Cycles USA Rock Hound Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Very aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive 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 | Very aggressive 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 | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Very upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
13.5 | 16.0 | 17.5 (27.5") | 17.5 (29") | 17.5 (26") | 19.0 (27.5") | 19.0 (29") | 20.5 | 22.0 | 23.5 | |
Stack | 561mm | 555mm | 582mm | 612mm | 559mm | 607mm | 612mm | 611mm | 642mm | 668mm |
Reach | 375mm | 415mm | 419mm | 417mm | 435mm | 428mm | 429mm | 441mm | 441mm | 444mm |
Stack to Reach Ratio | 1.5:1 | 1.34:1 | 1.39:1 | 1.47:1 | 1.29:1 | 1.42:1 | 1.43:1 | 1.39:1 | 1.46:1 | 1.5:1 |
Seat Tube Length, C-T | 343mm | 407mm | 408mm | 415mm | 445mm | 455mm | 455mm | 490mm | 530mm | 570mm |
Top Tube Length, Effective/Horizontal Center | 546mm | 580mm | 600mm | 600mm | 600mm | 615mm | 615mm | 630mm | 640mm | 650mm |
Top Tube Length, Actual C-C | 536.6mm | 558.2mm | 577.8mm | 581.5mm | 577mm | 590mm | 590.2mm | 602.9mm | 612.9mm | 623.5mm |
Top Tube Slope | 28deg | 18.7deg | 21.8deg | 23.3deg | 14.5deg | 18.4deg | 18.8deg | 14.9deg | 13.9deg | 12.5deg |
Head Tube Angle | 71.5deg | 71.5deg | 70deg | 71.5deg | 71.5deg | 70deg | 71.5deg | 71.5deg | 71.5deg | 71.5deg |
Seat Tube Angle | 74deg | 74deg | 73.5deg | 74deg | 74deg | 73.5deg | 73.5deg | 73deg | 73deg | 73deg |
Head Tube Length | 107mm | 101mm | 105mm | 106mm | 105mm | 124mm | 106mm | 105mm | 138mm | 165mm |
Bottom Bracket Drop | 40mm | 40mm | 55mm | 70mm | 40mm | 63mm | 70mm | 70mm | 70mm | 70mm |
Bottom Bracket Height | 295.4mm | 295.4mm | 292.9mm | 296.9mm | 295.4mm | 284.9mm | 296.9mm | 296.9mm | 296.9mm | 296.9mm |
Chainstay Length | 415mm | 415mm | 450mm | 450mm | 415mm | 450mm | 450mm | 450mm | 450mm | 450mm |
Chainstay Length Horizontal | 413.1mm | 413.1mm | 446.6mm | 444.5mm | 413.1mm | 445.6mm | 444.5mm | 444.5mm | 444.5mm | 444.5mm |
Front-Center | 591mm | 629mm | 667mm | 647mm | 651mm | 683mm | 659mm | 670mm | 681mm | 692mm |
Front-Center Horizontal | 589.9mm | 627.9mm | 665.4mm | 643.5mm | 648.9mm | 679.4mm | 655.5mm | 666.5mm | 677.5mm | 688.5mm |
Wheelbase | 1003mm | 1041mm | 1112mm | 1088mm | 1062mm | 1125mm | 1100mm | 1111mm | 1122mm | 1133mm |
Fork Offset/Rake | 39mm | 39mm | 51mm | 43mm | 39mm | 51mm | 43mm | 43mm | 43mm | 43mm |
Fork Length (Axle-To-Crown) | 466mm | 466mm | 466mm | 466mm | 466mm | 466mm | 466mm | 466mm | 466mm | 466mm |
Trail | 71.1mm high | 71.1mm high | 72.3mm high | 77.4mm high | 71.1mm high | 72.3mm high | 77.4mm high | 77.4mm high | 77.4mm high | 77.4mm high |
Mechanical Trail | 67.4mm | 67.4mm | 68mm | 73.4mm | 67.4mm | 68mm | 73.4mm | 73.4mm | 73.4mm | 73.4mm |
Wheel Flop | 21.4mm | 21.4mm | 23.3mm | 23.3mm | 21.4mm | 23.3mm | 23.3mm | 23.3mm | 23.3mm | 23.3mm |
Standover Height | 721mm | 748mm | 759mm | 793mm | 774mm | 790mm | 812mm | 827mm | 861mm | 890mm |
Tire to Pedal Spindle | 85.6mm 170 mm cranks | 123.6mm 170 mm cranks | 149.1mm 170 mm cranks | 110.1mm 170 mm cranks | 145.6mm 170 mm cranks | 165.1mm 170 mm cranks | 122.1mm 170 mm cranks | 133.1mm 170 mm cranks | 144.1mm 170 mm cranks | 155.1mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 125.4mm 170 mm cranks | 125.4mm 170 mm cranks | 122.9mm 170 mm cranks | 126.9mm 170 mm cranks | 125.4mm 170 mm cranks | 114.9mm 170 mm cranks | 126.9mm 170 mm cranks | 126.9mm 170 mm cranks | 126.9mm 170 mm cranks | 126.9mm 170 mm cranks |
Base Build
13.5 | 16.0 | 17.5 (27.5") | 17.5 (29") | 17.5 (26") | 19.0 (27.5") | 19.0 (29") | 20.5 | 22.0 | 23.5 | |
Wheel Size | 26 in 559 mm BSD | 26 in 559 mm BSD | 650B/27.5 in 584 mm BSD | 700C/29 in 622 mm BSD | 26 in 559 mm BSD | 650B/27.5 in 584 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 | 2.2in | 2.2in | 2.2in | 2.2in | 2.2in | 2.2in | 2.2in | 2.2in | 2.2in | 2.2in |
Tire Outer Diameter | 670.8mm | 670.8mm | 695.8mm | 733.8mm | 670.8mm | 695.8mm | 733.8mm | 733.8mm | 733.8mm | 733.8mm |
Bike Length with Tires | 1673.8mm | 1711.8mm | 1807.8mm | 1821.8mm | 1732.8mm | 1820.8mm | 1833.8mm | 1844.8mm | 1855.8mm | 1866.8mm |
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:http://gunnarbikes.com/site/bikes/rock-hound/