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 | 41 | 47 | 47 | 44 | 45 | 46 | 59 | 49 |
| Stack | 53 | 55 | 69 | 73 | 69 | 68 | 58 | 64 |
| Top Tube (effective) | 65 | 61 | 47 | 52 | 63 | 66 | 68 | 73 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 43 | 40 | 38 | 47 | 35 | 44 | 39 | 40 |
| Seat Tube (effective) | 65 | 70 | ||||||
| Head Angle | 56 | 74 | 60 | 63 | 68 | 70 | 62 | 70 |
| Seat Angle | 81 | 80 | 72 | 74 | 86 | 76 | 83 | 85 |
| Head Tube | 10 | 8 | 11 | 8 | 9 | 13 | 11 | 17 |
| Chainstay | 37 | 43 | 43 | 46 | 36 | 47 | 40 | 52 |
| Wheelbase | 113 | 129 | 111 | 116 | 140 | 126 | 113 | 144 |
| Standover | 80 | 71 | 91 | 92 | 66 | 67 | 65 | 93 |
| BB Drop | 1 | 1 | 1 | 2 | 2 | 1 | 2 | 1 |
| BB Height | 31 | 29 | 39 | 35 | 39 | 38 | 37 | 29 |
| 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 | 4 | 4 | 4 | 3 | 4 | 4 | 4 |
| Rear Travel | 13 | 11 | 13 | 12 | 13 | 11 | 14 | 10 |
| 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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