2021 Trek Bikes Rail 9.9 XTR XL low
Build
700C/29 in × 2.5 in
Insights
Somewhat upright stack and reach vs trend of full-suspension all-mountain/enduro mtb bikes
Design deviates from other sizes of Trek Bikes Rail
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 660mm |
| Reach | 517mm |
| Stack to Reach Ratio | 1.28:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal HT Top | 673mm |
| Head Tube Angle | 64.2deg |
| Seat Tube Exit Angle | 70.8deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 33mm |
| Bottom Bracket Height | 341.5mm |
| Chainstay Length | 44.8mm |
| Chainstay Length Horizontal | 30.3mm |
| Front-Center | 1284.1mm |
| Front-Center Horizontal | 1283.7mm |
| Wheelbase | 1314mm |
| Fork Offset/Rake | 43mm |
| Trail | 133.3mm very high |
| Mechanical Trail | 120mm |
| Wheel Flop | 52.2mm |
| Standover Height | 763mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 744.6mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 176.5mm |
9.9 XTR Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 749mm |
| Bike Length with Tires | 2063mm |
| Crank Length | 165mm |
| Handlebar Width | 780mm |
| Stem Length | 45mm |
| Stem Angle | 0deg |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 160mm |
| Rear Travel | 150mm |
| Suspension Sag | Unknown |
| Frame Material | Carbon/Composite |
| Fork Material | Steel |
| Brake Type | Disc |
| Features | E-bike |
Source:https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/electric-mountain-bikes/rail/rail-9-8-xt/p/35672/?colorCode=reddark_red