2017 Rocky Mountain Trailhead Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 100mm fork travel
- 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 | 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 |
Geometry
XS | S | M | L | XL | |
Stack | 597mm | 615mm | 614mm | 628mm | 642mm |
Reach | 376mm | 380mm | 404mm | 423mm | 440mm |
Stack to Reach Ratio | 1.59:1 | 1.62:1 | 1.52:1 | 1.48:1 | 1.46:1 |
Seat Tube Length, C-T | 355mm | 394mm | 432mm | 470mm | 508mm |
Top Tube Length, Effective/Horizontal HT Top | 550mm | 570mm | 592mm | 615mm | 638mm |
Top Tube Slope | 28.4deg | 25.7deg | 20.8deg | 17.7deg | 14.9deg |
Head Tube Angle | 69.5deg | 70.25deg | 70.25deg | 70.25deg | 70.25deg |
Seat Tube Angle | 74deg | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 100mm | 100mm | 100mm | 115mm | 130mm |
Bottom Bracket Drop | 56mm | 56mm | 56mm | 56mm | 56mm |
Bottom Bracket Height | 308.3mm | 308.3mm | 308.3mm | 308.3mm | 308.3mm |
Chainstay Length Horizontal | 447mm | 447mm | 447mm | 447mm | 447mm |
Front-Center | 633.5mm | 626.5mm | 648.4mm | 672.3mm | 695.3mm |
Front-Center Horizontal | 631mm | 624mm | 646mm | 670mm | 693mm |
Wheelbase | 1078mm | 1071mm | 1093mm | 1117mm | 1140mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm | 51mm |
Fork Length (Axle-To-Crown) | 509mm | 509mm | 509mm | 509mm | 509mm |
Trail | 81.8mm very high | 76.6mm high | 76.6mm high | 76.6mm high | 76.6mm high |
Mechanical Trail | 76.6mm | 72.1mm | 72.1mm | 72.1mm | 72.1mm |
Wheel Flop | 26.8mm | 24.4mm | 24.4mm | 24.4mm | 24.4mm |
Standover Height | 719mm | 738mm | 752mm | 776mm | 808mm |
Tire to Pedal Spindle | 99.1mm 170 mm cranks | 92.2mm 170 mm cranks | 114.1mm 170 mm cranks | 138mm 170 mm cranks | 160.9mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 138.3mm 170 mm cranks | 138.3mm 170 mm cranks | 138.3mm 170 mm cranks | 138.3mm 170 mm cranks | 138.3mm 170 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 | 1806.7mm | 1799.7mm | 1821.7mm | 1845.7mm | 1868.7mm |
Handlebar Width | 720mm | 720mm | 720mm | 720mm | 720mm |
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.bikes.com/en/bikes/trailhead/2017