Descending
69
A solid all-round descender (64.5° head angle, 150mm) — capable in the rough and steep without being an all-out bruiser.
Trek
Rail 2021
Discontinued✎Full Power · TrailLegacy · 1/10iFreshness 1/10
How current the bike is — newer chassis, motor and battery score higher. 10 = brand-new, 0 = legacy.
How current the bike is — newer chassis, motor and battery score higher. 10 = brand-new, 0 = legacy.
Confident long-travel enduro with removable battery and adjustable geometry
Motor
Bosch Performance Line CX Gen 4 · 85Nm · 600W↗
Battery
Bosch PowerTube 625 · 625Wh
Travel F/R
160/150mm
Wheels
29F / 29R✎
Frame
Alpha Platinum Aluminium (Rail 5, 7) or OCLV Mountain Carbon main frame with alloy chainstay (Rail 9.7, 9.8, 9.9). All frames: tool-free Removable Integrated Battery (RIB), magnesium rocker link, Motor Armour down-tube guard, Mino Link geometry adjust, Boost148, 12 mm thru axle.✎
Geometry read
What the numbers mean on the trail
Computed from this bike's geometry, spec and build kit — reach, wheelbase, chainstay, head and seat angles, travel, motor, weight and the fork/tyre/brake spec — and worked out per size, because a fixed chainstay can make an S and an XL feel very different.
Size
Setting
Playfulness
47
A fair bit of pop, but happiest on flowing trail rather than trials moves.
Size balance
98
Rear-long with a planted front in L (FC:RC 1.77) — easy to weight the front and quick to turn, though it can feel light at the back at real speed.
Technical climbing
71
Climbs well — a 75° seat keeps the front planted. 600W of peak power and 85Nm of torque — a strong full-power motor.
No single standout trait — a balanced, versatile bike.
The numbers are well balanced for its category.
How it stacks up vs other Full Power · Trail bikes (from 271 bikes in the database)
Battery625 Wh79 Wh below average
Motor torque85 Nm13 Nm below average
⚙️ Adjustable geometry: this frame has a high/low setting — low drops the BB and slackens the head angle for more descending stability; high lifts the BB and steepens slightly for clearance and a perkier, more playful feel.
Computed from geometry + spec, not a paid review. Scores are guidance, not gospel.
💬 Forum discussion
Trek rail rear shock upgrade ideas please
714 replies · 285.6k views · last reply 2 months ago
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“I wanted to fit a Super Deluxe, so I made this yoke to lenghten 205 trunnion to 230. Works good.”
— zdenny55 · ♥ 12 · most-liked post
OWNERS’ REPORT
Geometry · hover a row to highlight the measurement on the bike
Flip-chip positiongeometry changes with the chip
| S | M | L | XL | |
|---|---|---|---|---|
| Reach | 425 mm | 450 mm | 470 mm | 499 mm |
| Stack | 623 mm | 622 mm | 627 mm | 636 mm |
| Seattube | 410 mm | 420 mm | 450 mm | 500 mm |
| Chainstay | 447 mm | 447 mm | 447 mm | 447 mm |
| Headtube Angle | 64.9° | 64.9° | 64.9° | 64.9° |
| Seattube Angle (eff) | 75.4° | 75.4° | 75.4° | 75.4° |
| Wheelbase | 1195 mm | 1220 mm | 1243 mm | 1277 mm |
| Headtube | 105 mm | 105 mm | 110 mm | 120 mm |
| BB Height | 344 mm | 344 mm | 344 mm | 344 mm |
| Standover | 748 mm | 778 mm | 767 mm | 780 mm |
| Front Centre | 748 mm* | 773 mm* | 796 mm* | 830 mm* |
| FC:RC | 1.67 | 1.73 | 1.78 | 1.86 |
Rides similarly
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