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 | 38 | 41 | 54 | 39 | 55 | 49 | 46 | 50 |
| Stack | 58 | 49 | 62 | 51 | 67 | 76 | 67 | 76 |
| Top Tube (effective) | 65 | 52 | 66 | 68 | 52 | 53 | 68 | 75 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 35 | 44 | 45 | 46 | 40 | 45 | 53 | 45 |
| Seat Tube (effective) | 84 | 81 | ||||||
| Head Angle | 63 | 66 | 54 | 59 | 67 | 60 | 76 | 68 |
| Seat Angle | 65 | 75 | 80 | 62 | 91 | 71 | 70 | 81 |
| Head Tube | 11 | 10 | 8 | 10 | 12 | 11 | 17 | 16 |
| Chainstay | 51 | 36 | 40 | 49 | 36 | 49 | 37 | 38 |
| Wheelbase | 114 | 111 | 124 | 140 | 144 | 122 | 130 | 120 |
| Standover | 83 | 76 | 71 | 69 | 79 | 93 | 71 | 86 |
| BB Drop | 1 | 1 | 2 | 2 | 2 | 1 | 2 | 1 |
| BB Height | 37 | 36 | 31 | 29 | 28 | 35 | 35 | 32 |
| 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 | 4 | 4 | 4 | 4 | 4 | 3 |
| Rear Travel | 12 | 13 | 14 | 14 | 12 | 10 | 12 | 15 |
| 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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