2020 Gunnar Cycles USA Rock Hound Base

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 Scale
Source:http://gunnarbikes.com/site/bikes/rock-hound/