TREK Rail+ 8 Gen 5 2025
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Geometry
| 15.5" | 15.5" | M - 17.5" (High - Geometry position) | 17.5" | 19.5" | 19.5" | XL - 21.5" (High - Geometry position) | 21.5" | |
|---|---|---|---|---|---|---|---|---|
| Add to Compare | ||||||||
| Reach | 39 | 35 | 45 | 52 | 51 | 56 | 61 | 50 |
| Stack | 65 | 59 | 67 | 50 | 51 | 77 | 64 | 70 |
| Top Tube (effective) | 59 | 47 | 52 | 67 | 74 | 75 | 66 | 66 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 40 | 39 | 36 | 43 | 45 | 35 | 42 | 44 |
| Seat Tube (effective) | 65 | 86 | ||||||
| Head Angle | 71 | 73 | 64 | 61 | 59 | 64 | 67 | 54 |
| Seat Angle | 65 | 91 | 72 | 84 | 91 | 82 | 66 | 77 |
| Head Tube | 8 | 10 | 9 | 10 | 9 | 12 | 16 | 16 |
| Chainstay | 53 | 48 | 50 | 36 | 46 | 48 | 41 | 48 |
| Wheelbase | 116 | 130 | 99 | 114 | 148 | 135 | 105 | 127 |
| Standover | 61 | 67 | 71 | 71 | 79 | 71 | 74 | 82 |
| BB Drop | 1 | 2 | 1 | 2 | 2 | 2 | 2 | 1 |
| BB Height | 27 | 37 | 41 | 33 | 40 | 34 | 38 | 37 |
| Wheel Size | 27.5" | 27.5" | 29"/27.5" | 29"/27.5" | 29"/27.5" | 29"/27.5" | 29"/27.5" | 29"/27.5" |
| Seatpost Offset | 4 | 3 | 4 | 3 | 4 | 4 | 4 | 3 |
| Rear Travel | 10 | 10 | 12 | 12 | 12 | 12 | 14 | 12 |
| Data Source | None | None | Manufacturer | None | None | None | Manufacturer | None |
Standard measurements are in millimeters and degrees. The site attempts to recognize and convert other units back to standard - results may vary.
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