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 | 49 | 45 | 47 | 54 | 51 | 44 | 60 |
| Stack | 66 | 58 | 73 | 53 | 59 | 59 | 63 | 61 |
| Top Tube (effective) | 53 | 45 | 53 | 49 | 66 | 76 | 61 | 61 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 42 | 37 | 33 | 44 | 40 | 48 | 41 | 39 |
| Seat Tube (effective) | 76 | 67 | ||||||
| Head Angle | 55 | 61 | 64 | 61 | 66 | 70 | 63 | 68 |
| Seat Angle | 63 | 81 | 67 | 65 | 78 | 68 | 78 | 86 |
| Head Tube | 8 | 10 | 10 | 9 | 12 | 12 | 16 | 13 |
| Chainstay | 50 | 45 | 49 | 43 | 47 | 37 | 45 | 37 |
| Wheelbase | 134 | 130 | 123 | 104 | 116 | 144 | 120 | 150 |
| Standover | 84 | 70 | 85 | 70 | 71 | 82 | 89 | 69 |
| BB Drop | 1 | 1 | 1 | 2 | 2 | 1 | 2 | 1 |
| BB Height | 35 | 34 | 28 | 39 | 33 | 31 | 33 | 39 |
| 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 | 3 | 4 | 4 | 4 | 4 | 3 |
| Rear Travel | 10 | 10 | 11 | 10 | 15 | 11 | 13 | 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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