2017 Rocky Mountain Trailhead Base XL
Build
700C/29 in × 2.1 in
Insights
Somewhat upright stack and reach vs trend of hardtail cross-country mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 642mm |
| Reach | 440mm |
| Stack to Reach Ratio | 1.46:1 |
| Seat Tube Length, C-T | 508mm |
| Top Tube Length, Effective/Horizontal HT Top | 638mm |
| Top Tube Slope | 14.9deg |
| Head Tube Angle | 70.25deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 56mm |
| Bottom Bracket Height | 308.3mm |
| Chainstay Length Horizontal | 447mm |
| Front-Center | 695.3mm |
| Front-Center Horizontal | 693mm |
| Wheelbase | 1140mm |
| Fork Offset/Rake | 51mm |
| Fork Length (Axle-To-Crown) | 509mm |
| Trail | 76.6mm high |
| Mechanical Trail | 72.1mm |
| Wheel Flop | 24.4mm |
| Standover Height | 808mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 160.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 138.3mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.1in |
| Tire Outer Diameter | 728.7mm |
| Bike Length with Tires | 1868.7mm |
| Handlebar Width | 720mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.bikes.com/en/bikes/trailhead/2017