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 | 51 | 39 | 42 | 39 | 58 | 58 | 48 | 45 |
| Stack | 56 | 64 | 62 | 59 | 61 | 59 | 55 | 74 |
| Top Tube (effective) | 65 | 53 | 53 | 57 | 63 | 53 | 65 | 55 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 32 | 42 | 39 | 40 | 49 | 51 | 44 | 47 |
| Seat Tube (effective) | 65 | 74 | ||||||
| Head Angle | 59 | 56 | 61 | 75 | 71 | 74 | 72 | 63 |
| Seat Angle | 85 | 91 | 87 | 78 | 87 | 73 | 89 | 76 |
| Head Tube | 8 | 11 | 8 | 11 | 11 | 13 | 15 | 16 |
| Chainstay | 49 | 44 | 47 | 38 | 39 | 39 | 50 | 36 |
| Wheelbase | 123 | 131 | 145 | 113 | 107 | 151 | 105 | 109 |
| Standover | 63 | 72 | 64 | 85 | 86 | 70 | 66 | 70 |
| BB Drop | 1 | 2 | 1 | 2 | 2 | 1 | 2 | 1 |
| BB Height | 29 | 30 | 27 | 34 | 28 | 31 | 37 | 30 |
| 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 | 3 | 5 | 4 |
| Rear Travel | 11 | 11 | 13 | 13 | 15 | 14 | 14 | 11 |
| 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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