2018 Trek Bikes X-Caliber 8 XXL
Build
700C/29 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
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Geometry
| Stack | 628mm |
| Reach | 478mm |
| Stack to Reach Ratio | 1.31:1 |
| Seat Tube Length, Unknown | 559mm |
| Top Tube Length, Effective/Horizontal Unknown | 669mm |
| Top Tube Slope | 8.4deg |
| Head Tube Angle | 69.3deg |
| Seat Tube Angle | 72deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 50.9mm |
| Bottom Bracket Height | 316mm |
| Chainstay Length | 438mm |
| Chainstay Length Horizontal | 435mm |
| Front-Center | 749.7mm |
| Front-Center Horizontal | 748mm |
| Wheelbase | 1183mm |
| Fork Offset/Rake | 51mm |
| Trail | 84.1mm very high |
| Mechanical Trail | 78.7mm |
| Wheel Flop | 27.8mm |
| Standover Height | 773mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 212.8mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 146mm |
8 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.2in |
| Tire Outer Diameter | 733.8mm |
| Bike Length with Tires | 1916.8mm |
| Handlebar Width | 720mm |
| Stem Angle | 7deg |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Steel |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 6 ft 5 in to 6 ft 8 in |
Source:https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/cross-country-mountain-bikes/x-caliber/x-caliber-8/p/21577/