2017 Gunnar Cycles USA Rock Tour 29er Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Features
- Disc brake
Somewhat upright 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 | 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
19" | 20.5" | 22" | 23.5" | |
Stack | 612mm | 614mm | 636mm | 665mm |
Reach | 398mm | 405mm | 414mm | 420mm |
Stack to Reach Ratio | 1.54:1 | 1.52:1 | 1.54:1 | 1.58:1 |
Seat Tube Length, C-T | 483mm | 522mm | 559mm | 597mm |
Top Tube Length, Effective/Horizontal HT Top | 580mm | 595mm | 610mm | 625mm |
Top Tube Slope | 15.5deg | 11.6deg | 10deg | 9deg |
Head Tube Angle | 71deg | 71.5deg | 71.5deg | 71.5deg |
Seat Tube Angle | 74deg | 73deg | 73deg | 73deg |
Head Tube Length | 107mm | 107mm | 130mm | 160mm |
Bottom Bracket Drop | 70mm | 70mm | 70mm | 70mm |
Bottom Bracket Height | 299.4mm | 299.4mm | 299.4mm | 299.4mm |
Chainstay Length | 450mm | 450mm | 450mm | 450mm |
Chainstay Length Max | 450mm | 450mm | 450mm | 450mm |
Chainstay Length Horizontal | 444.5mm | 444.5mm | 444.5mm | 444.5mm |
Chainstay Length Horizontal Max | 444.5mm | 444.5mm | 444.5mm | 444.5mm |
Front-Center | 629.4mm | 631.4mm | 647.3mm | 663.2mm |
Front-Center Horizontal | 625.5mm | 627.5mm | 643.5mm | 659.5mm |
Wheelbase | 1070mm | 1072mm | 1088mm | 1104mm |
Wheelbase Max | 1070mm | 1072mm | 1088mm | 1104mm |
Fork Offset/Rake | 39mm | 39mm | 39mm | 39mm |
Fork Length (Axle-To-Crown) | 466mm | 466mm | 466mm | 466mm |
Trail | 86mm very high | 82.5mm very high | 82.5mm very high | 82.5mm very high |
Mechanical Trail | 81.3mm | 78.2mm | 78.2mm | 78.2mm |
Wheel Flop | 26.5mm | 24.8mm | 24.8mm | 24.8mm |
Standover Height | 822mm | 840mm | 864mm | 896mm |
Tire to Pedal Spindle | 90mm 170 mm cranks | 92mm 170 mm cranks | 107.9mm 170 mm cranks | 123.8mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 129.4mm 170 mm cranks | 129.4mm 170 mm cranks | 129.4mm 170 mm cranks | 129.4mm 170 mm cranks |
Base Build
19" | 20.5" | 22" | 23.5" | |
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 |
Tire Width | 2.3in | 2.3in | 2.3in | 2.3in |
Tire Width Max | 2.3in | 2.3in | 2.3in | 2.3in |
Tire Outer Diameter | 738.8mm | 738.8mm | 738.8mm | 738.8mm |
Bike Length with Tires | 1808.8mm | 1810.8mm | 1826.8mm | 1842.8mm |
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:Bike Counterculture Geometry Database