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It's right for you if...
You’re looking for an e-MTB that’s just as ready to shred as non-electric trail bikes. You want a powerful Bosch drive system that’ll propel you up climbs so you can hit lap after lap.
The tech you get
A burly alloy frame with 150mm of rear travel that fully encases a 500Wh battery, an e-MTB optimized 160mm RockShox 35 Gold RL fork, a powerful new Bosch Performance Line CX 250W motor that assists up to 20 mph, and a Purion controller. Plus, a 1x12 drivetrain with a wide gear range so you can always find the ideal cadence for the motor, a dropper post, powerful 4-piston brakes for more downhill confidence, and 29er Bontrager wheels with nimble yet grippy 2.6" tires.
The final word
Rail 5 is our best-value long-travel e-MTB. It's equally as capable as our regular long-travel trail bikes, it just gets you back to the top in a flash. The powerful Bosch drive systems and durable part spec make for long-lasting fun.
See it in action
favorite_borderWhy you'll love it
- Rail shreds just as hard as its non-electric brethren, plus it powers you right back up the mountain—no shuttle or lift necessary
- The Purion controller has Walk Assist and an intelligent eMTB mode that automatically delivers the right amount of power based on your terrain
- Made with the same exclusive frame tech as Remedy and Slash, like Mino Link adjustable geometry, a Straight Shot down tube for extra stiffness, and Active Braking Pivot (ABP)
- The dropper post lets you lower your saddle on the fly so it's out of the way on descents
- Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy remove the battery without tools and lets you mount a water bottle cage
Best in Class winner!
It was a close competition, but not much could match the Rail on every type of terrain. The Bosch system will get you up any trail and the geometry is as close to perfect as we have found for all-around riding.
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"Our e-bike of the Year"
"Rail dominates the descents and flattens the climbs…it’s every bit as potent as the Slash, but with its own built-in uplift."
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"Sets the bar"
"Whether flowing or technical, it literally glides by the competition like it's on rails while also offering plenty of comfort for long days in the saddle."
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Minimum days, maximum fun
With just one week to road trip through British Columbia, two Trek big mountain riders decided to think outside the box.
Watch the videoYou might also like
Features
Bosch Performance Line CX motor
Bosch Performance Line CX sets the standard for eMTB performance with up to 85Nm of torque and an intelligent eMTB mode with Extended Boost that automatically adjusts the amount of assist based on the terrain.
Custom eMTB Lite mode
Trek eMTBs feature a custom eMTB Lite mode in place of Tour mode. It gives you more natural-feeling power delivery and longer battery life.
RIB is a one-piece battery and cover with a built-in handle that can easily be removed and re-installed in the frame with no tools and no hassle. It’s the most convenient way to remove your battery for transport, security, or just easier charging.
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.
To see how far you can ride your electric mountain bike on a single charge, check out Bosch’s range calculator. We’ve auto-filled the variables for this bike model and the average rider, but you can make adjustments to get your most accurate estimate.
Suspension Calculator
This suspension calculator will help you optimize your suspension settings for your riding weight. Simply follow the steps to find your best set up.
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Bosch Purion Display
Bosch's Purion display features a fully-functional speedometer with a backlit display, service interval indicator, and battery range indicator. Its thoughtful design allows riders to scroll through functions or choose the right level of support while maintaining contact with handlebars.
Mino Link adjustable geometry
Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.
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Integrated speed sensor
You've got one less detail to sweat with the integrated speed sensor. The chainstay-mounted sensor stays protected while the custom hub-mounted magnet stays secure—no more error codes from mis-aligned sensors.
Knock Block
Knock Block has your frame's back when things go wrong. It prevents your handlebars from spinning all the way around in a crash, so your hoses won't get yanked, and your controls won't hit the top tube.
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Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Platinum Aluminum, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, magnesium rocker link, Motor Armor, Mino Link, ABP, Boost148, 12mm thru axle, 150mm travel |
|---|---|
| Fork | RockShox 35 Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 44mm offset, oversized crown for eMTB, Boost110, 15mm Maxle Stealth, 160mm travel |
| Shock | RockShox Deluxe Select+, 230mm x 57.5mm |
| Max compatible fork travel | 170mm (580mm axle-to-crown) |
| Hub front | Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle |
|---|---|
| Hub rear | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Rim | Alex MD35, tubeless compatible, 32-hole, 35mm width, presta valve |
| Tire | Bontrager XR4 Comp, wire bead, 30 tpi, 29x2.60'' |
| Max tire size | Frame: 29x2.60" Fork: See manufacturer |
| Shifter | Shimano Deore M6100, 12 speed |
|---|---|
| Rear derailleur | Shimano Deore M6100, long cage |
| Crank | E*thirteen E*spec Plus, 34T, 165mm length |
| Cassette | Shimano Deore M6100, 10-51, 12 speed |
| Chain | Shimano Deore M6100, 12 speed |
| Pedal | VP-536 nylon platform |
| Max chainring size | 34T |
| Saddle | Bontrager Arvada, steel rails, 138mm width |
|---|---|
| *Seatpost |
Size:
S TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length |
|
Size:
M, L, XL TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length |
|
| Handlebar | Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| Stem | Bontrager Rhythm Comp, 31.8mm, Knock Block, 0 degree, 50mm length |
| Headset | Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano 4-piston hydraulic disc, MT4100 lever, MT420 caliper |
| Brake rotor | Shimano RT76, 6-bolt, 203mm |
| Charger | Bosch compact 2A, 100-240V, smart system |
|---|---|
| Controller | Bosch Purion |
| Motor | Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 20mph or 32km/h max assist |
| Weight | M - 23.88 kg / 52.65 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Sizing & Tech
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer.
Rider Height
Inseam
S
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
M
161.0 - 175.0 cm
5'3.4" - 5'8.9"
76.0 - 82.0 cm
29.9" - 32.3"
L
174.0 - 188.0 cm
5'8.5" - 6'2.0"
82.0 - 88.0 cm
32.3" - 34.6"
XL
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise noted.
| Frame size number | Frame size letter | Geometry position | Wheel size | A — Seat tube | B — Seat tube angle | Effective seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.5 | S | Low | 29" | 41.0 | 67.6° | 75.0° | 10.5 | 64.5° | 58.8 | 33.9 | 3.5 | 44.8 | 4.3 | 13.1 | 119.6 | 74.3 | 42.0 | 62.6 |
| 15.5 | S | High | 29" | 41.0 | 68.0° | 75.4° | 10.5 | 64.9° | 58.7 | 34.4 | 2.9 | 44.7 | 4.3 | 12.7 | 119.5 | 74.8 | 42.5 | 62.3 |
| 17.5 | M | Low | 29" | 42.0 | 67.6° | 75.0° | 10.5 | 64.5° | 61.3 | 33.9 | 3.5 | 44.8 | 4.3 | 13.1 | 122.1 | 77.3 | 44.5 | 62.6 |
| 17.5 | M | High | 29" | 42.0 | 68.0° | 75.4° | 10.5 | 64.9° | 61.1 | 34.4 | 2.9 | 44.7 | 4.3 | 12.7 | 122.0 | 77.8 | 45.0 | 62.2 |
| 19.5 | L | Low | 29" | 45.0 | 67.6° | 75.0° | 11.0 | 64.5° | 63.4 | 33.9 | 3.5 | 44.8 | 4.3 | 13.1 | 124.3 | 76.2 | 46.5 | 63.0 |
| 19.5 | L | High | 29" | 45.0 | 68.0° | 75.4° | 11.0 | 64.9° | 63.3 | 34.4 | 2.9 | 44.7 | 4.3 | 12.7 | 124.3 | 76.7 | 47.0 | 62.7 |
| 21.5 | XL | Low | 29" | 50.0 | 67.6° | 75.0° | 12.0 | 64.5° | 66.6 | 33.9 | 3.5 | 44.8 | 4.3 | 13.1 | 127.8 | 77.5 | 49.5 | 63.9 |
| 21.5 | XL | High | 29" | 50.0 | 68.0° | 75.4° | 12.0 | 64.9° | 66.5 | 34.4 | 2.9 | 44.7 | 4.3 | 12.7 | 127.7 | 78.0 | 49.9 | 63.6 |