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 | 47 | 41 | 36 | 41 | 48 | 53 | 54 | 58 |
| Stack | 48 | 52 | 57 | 73 | 51 | 58 | 76 | 62 |
| Top Tube (effective) | 56 | 45 | 51 | 65 | 55 | 74 | 71 | 57 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 42 | 41 | 35 | 48 | 50 | 34 | 53 | 48 |
| Seat Tube (effective) | 69 | 82 | ||||||
| Head Angle | 54 | 55 | 67 | 65 | 54 | 70 | 55 | 59 |
| Seat Angle | 85 | 86 | 86 | 87 | 74 | 78 | 85 | 75 |
| Head Tube | 11 | 9 | 8 | 10 | 11 | 14 | 14 | 14 |
| Chainstay | 37 | 38 | 44 | 48 | 41 | 48 | 42 | 45 |
| Wheelbase | 108 | 152 | 105 | 104 | 106 | 126 | 130 | 141 |
| Standover | 67 | 84 | 87 | 64 | 91 | 65 | 65 | 89 |
| BB Drop | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| BB Height | 37 | 31 | 34 | 38 | 36 | 39 | 38 | 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 | 4 | 4 | 4 | 4 | 4 | 5 | 4 | 4 |
| Rear Travel | 13 | 13 | 13 | 15 | 12 | 12 | 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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