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 | 38 | 39 | 52 | 42 | 52 | 40 | 44 | 58 |
| Stack | 62 | 69 | 50 | 50 | 63 | 64 | 68 | 66 |
| Top Tube (effective) | 63 | 57 | 55 | 51 | 70 | 72 | 75 | 72 |
| Seat Tube C-T | S | S | M | M | L | L | XL | XL |
| Seat Tube C-C | 37 | 41 | 40 | 42 | 40 | 47 | 51 | 39 |
| Seat Tube (effective) | 63 | 88 | ||||||
| Head Angle | 55 | 59 | 63 | 52 | 55 | 63 | 55 | 64 |
| Seat Angle | 84 | 80 | 86 | 86 | 70 | 87 | 74 | 76 |
| Head Tube | 8 | 9 | 11 | 8 | 12 | 10 | 11 | 13 |
| Chainstay | 43 | 36 | 36 | 48 | 48 | 45 | 39 | 39 |
| Wheelbase | 109 | 150 | 122 | 100 | 150 | 150 | 156 | 105 |
| Standover | 83 | 83 | 64 | 68 | 76 | 69 | 67 | 66 |
| BB Drop | 1 | 1 | 2 | 2 | 2 | 1 | 2 | 1 |
| BB Height | 37 | 33 | 34 | 28 | 38 | 28 | 36 | 31 |
| 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 | 3 | 4 | 3 | 4 | 4 | 4 | 4 |
| Rear Travel | 11 | 10 | 12 | 13 | 14 | 11 | 13 | 14 |
| 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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