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 | 36 | 38 | 36 | 49 | 44 | 43 | 56 | 53 |
| Stack | 63 | 48 | 53 | 54 | 69 | 57 | 64 | 77 |
| Top Tube (effective) | 47 | 58 | 63 | 61 | 75 | 55 | 72 | 59 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 40 | 43 | 48 | 41 | 45 | 51 | 43 | 52 |
| Seat Tube (effective) | 77 | 86 | ||||||
| Head Angle | 71 | 75 | 71 | 61 | 57 | 76 | 70 | 55 |
| Seat Angle | 68 | 83 | 86 | 74 | 73 | 79 | 86 | 68 |
| Head Tube | 11 | 10 | 11 | 11 | 9 | 13 | 17 | 11 |
| Chainstay | 38 | 44 | 38 | 49 | 45 | 40 | 48 | 47 |
| Wheelbase | 102 | 118 | 146 | 138 | 150 | 108 | 134 | 130 |
| Standover | 70 | 75 | 76 | 70 | 69 | 88 | 71 | 85 |
| BB Drop | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 1 |
| BB Height | 34 | 39 | 30 | 34 | 33 | 31 | 37 | 27 |
| 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 | 5 | 3 | 3 | 4 | 4 | 4 | 3 |
| Rear Travel | 12 | 9 | 11 | 11 | 13 | 14 | 12 | 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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