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 | 37 | 48 | 37 | 48 | 41 | 57 | 58 | 51 |
| Stack | 55 | 66 | 61 | 68 | 68 | 61 | 58 | 55 |
| Top Tube (effective) | 62 | 48 | 57 | 61 | 52 | 69 | 78 | 67 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 44 | 44 | 33 | 35 | 35 | 52 | 39 | 50 |
| Seat Tube (effective) | 63 | 74 | ||||||
| Head Angle | 74 | 67 | 72 | 58 | 69 | 68 | 60 | 66 |
| Seat Angle | 80 | 67 | 76 | 78 | 88 | 65 | 88 | 90 |
| Head Tube | 11 | 10 | 8 | 11 | 10 | 13 | 16 | 13 |
| Chainstay | 43 | 43 | 51 | 38 | 42 | 39 | 40 | 40 |
| Wheelbase | 104 | 150 | 125 | 120 | 119 | 144 | 122 | 117 |
| Standover | 82 | 88 | 80 | 79 | 64 | 77 | 75 | 75 |
| BB Drop | 1 | 2 | 1 | 2 | 2 | 1 | 2 | 1 |
| BB Height | 32 | 30 | 32 | 30 | 35 | 35 | 29 | 38 |
| 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 | 5 | 4 | 4 | 4 | 4 |
| Rear Travel | 14 | 12 | 10 | 10 | 11 | 10 | 13 | 13 |
| 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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