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 | 40 | 49 | 38 | 44 | 45 | 57 | 55 | 49 |
| Stack | 63 | 52 | 72 | 63 | 64 | 69 | 61 | 63 |
| Top Tube (effective) | 53 | 55 | 66 | 59 | 74 | 59 | 73 | 79 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 40 | 39 | 46 | 38 | 35 | 40 | 55 | 54 |
| Seat Tube (effective) | 71 | 86 | ||||||
| Head Angle | 75 | 54 | 69 | 69 | 67 | 63 | 62 | 73 |
| Seat Angle | 70 | 91 | 64 | 76 | 64 | 76 | 78 | 74 |
| Head Tube | 9 | 11 | 10 | 8 | 10 | 11 | 14 | 15 |
| Chainstay | 40 | 49 | 50 | 45 | 53 | 45 | 37 | 41 |
| Wheelbase | 117 | 137 | 100 | 127 | 114 | 146 | 136 | 129 |
| Standover | 72 | 86 | 79 | 88 | 90 | 87 | 83 | 75 |
| BB Drop | 1 | 2 | 1 | 2 | 2 | 1 | 2 | 1 |
| BB Height | 33 | 29 | 36 | 37 | 28 | 38 | 36 | 35 |
| 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 | 3 | 4 | 3 | 3 | 4 | 4 | 3 | 3 |
| Rear Travel | 11 | 10 | 14 | 14 | 14 | 14 | 11 | 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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