2020 Trek Bikes X-Caliber 8 XS
Build
650B/27.5 in × 2.2 in
Insights
Somewhat aggressive stack and reach vs trend of hardtail cross-country mtb bikes
Design deviates from other sizes of Trek Bikes X-Caliber
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 565mm |
| Reach | 376mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, C-T | 343mm |
| Top Tube Length, Effective/Horizontal Center | 543mm |
| Top Tube Slope | 26.5deg |
| Head Tube Angle | 69.3deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 90mm |
| Bottom Bracket Drop | 58mm |
| Bottom Bracket Height | 289.9mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 421mm |
| Front-Center | 617.7mm |
| Front-Center Horizontal | 615mm |
| Wheelbase | 1036mm |
| Fork Offset/Rake | 42mm |
| Trail | 86.6mm very high |
| Mechanical Trail | 81mm |
| Wheel Flop | 28.6mm |
| Standover Height | 698mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 99.8mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 119.9mm |
8 Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.2in |
| Tire Outer Diameter | 695.8mm |
| Bike Length with Tires | 1731.8mm |
| Handlebar Width | 690mm |
| Stem Length | 60mm |
| Stem Angle | 7deg |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | N/A |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 137 cm to 155 cm |
| PBH | 64 cm to 73 cm |
Source:https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/cross-country-mountain-bikes/x-caliber/x-caliber-8/p/28064/?colorCode=black