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 | 50 | 36 | 45 | 52 | 46 | 40 | 43 | 56 |
| Stack | 55 | 58 | 72 | 67 | 73 | 75 | 75 | 64 |
| Top Tube (effective) | 67 | 47 | 63 | 60 | 76 | 68 | 62 | 61 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 33 | 38 | 48 | 35 | 40 | 46 | 43 | 42 |
| Seat Tube (effective) | 67 | 81 | ||||||
| Head Angle | 58 | 60 | 69 | 75 | 67 | 72 | 52 | 60 |
| Seat Angle | 92 | 88 | 71 | 91 | 64 | 76 | 84 | 76 |
| Head Tube | 8 | 10 | 11 | 9 | 14 | 11 | 13 | 12 |
| Chainstay | 50 | 53 | 44 | 45 | 49 | 46 | 49 | 41 |
| Wheelbase | 112 | 129 | 113 | 99 | 144 | 119 | 141 | 137 |
| Standover | 82 | 88 | 69 | 75 | 76 | 66 | 73 | 66 |
| BB Drop | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 1 |
| BB Height | 38 | 39 | 39 | 29 | 34 | 32 | 29 | 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 | 4 | 3 | 4 | 4 | 3 | 4 | 4 | 4 |
| Rear Travel | 11 | 14 | 12 | 13 | 13 | 14 | 15 | 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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