More options
It's right for you if...
This bike is perfect for XC riders who want to push a little farther or a little steeper. It's also great for anyone who needs a little boost to motivate them to ride more, to get up climbs, or to keep pace with faster groups.
The tech you get
An OCLV Mountain Carbon frame with 60mm of travel, a 120mm RockShox Gold RL fork, and Trek's IsoStrut FOX Performance shock. A Fazua Ride Trail 50 drive system that can assist up to 20 mph when it's on, and gives zero drag when it's off, plus a Shimano Deore 12-speed drivetrain, dropper post for getting low on descents, and Bontrager Kovee Comp 23 wheels.
The final word
E-Caliber is a fast and smooth XC bike that just happens to have a compact drive system that'll give you a little boost when you want it.
The Walkthrough
favorite_borderWhy you'll love it
- You get a helping hand from the motor on climbs and long rides, but it's a more natural-feeling assist that gives you an overall experience that's closer to riding an analog bike than a typical e-MTB
- The drive system, including the motor, is easily removable. Just take it out, pop on the included cover, and you’ll have a standard mountain bike that weighs 2.9kg less than before
- IsoStrut gives you just enough rear suspension for cross country traction and comfort with less weight and more efficiency
- Pivotless seat stays save on weight and actively bend to help soak up trail chatter
Outside Magazine’s 2021 Best eMTB
"As expected, the E-Caliber made us feel like the World Cup racers we wish we were, but the real benefit was that we were more willing to ride, rather than drive, to our favorite trails. Logging more miles in the same amount of time is a win in our book."
Read more
E-Caliber is a winner in Bicycling Magazine's 2021 E-Bike Awards!
Trek's E-Caliber makes for a unique riding experience that should appeal to folks looking to get in more trail miles instead of shuttle runs" - Bicycling Magazine Editors
Read more
"The heart of a cross country racer"
"The combination of short travel, light weight, and aggressive geometry will make for a bike that opens up the joys of long trail adventures and ripping fast singletrack to a segment of riders that may not otherwise get to experience that thrill."
Read more
Wondering what's over the next ridge?
E-Caliber's got an appetite for distance, a love of XC speed, and the right amount of suspension and power to turn up your endurance on epic singletrack sessions.
Watch the videoYou might also like
Features
Fast and efficient
Fazua's lightweight drive system adds a punch of power when you need it, but rides and feels like a traditional bike when you don't. You won't feel much drag or resistance when you turn it off or pass the max level of assist. The system is also compatible with a smartphone app to let you check battery status and customize your ride.
Smart software for the trail
E-Caliber is equipped with intelligent Fazua software called BLACK PEPPER, which allows the motor to respond immediately as you start to pedal, delivers more power over a wider cadence range, and lets you customize your user settings.
Removable drivepack
Remove the motor and drivepack to save 6.4 lbs./2.9 kg on days when you don't need the boost. The included cover also turns the down tube into extra storage.
E-Caliber has the same innovative IsoStrut rear suspension as World Cup-winning Supercaliber. You get 60mm of integrated rear travel—just the right amount of comfort and traction, without the weight or flex of traditional full suspension.
Trek's mountain-specific carbon fiber is tougher carbon, with unique materials and layup procedures, Trek's advanced engineering, and a higher standard of testing.
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.
Learn more
Complete Tubeless System
Tubeless Ready rims and tires make it easy to ditch the tubes so you get better traction, fewer flats, and less weight. You're ready to roll right out of the box with the included TLR rim strips, valves, and sealant.
Learn more
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.
Learn more
Boost148/110
Wider dropouts (110mm front, 148mm rear) give you the stiffness of a 27.5" wheel with all the benefits of a 29" wheel, and Boost148 in the rear lets you run wider tires and a larger chainring without affecting q-factor and pedaling efficiency.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | OCLV Mountain Carbon main frame & stays, IsoStrut, tapered head tube, Knock Block, Control Freak internal routing, Boost148, 60mm travel |
|---|---|
| Fork | RockShox 35 Gold RL, DebonAir spring, Motion Control damper, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 120mm travel |
| *Shock |
Size:
S Trek IsoStrut, Fox Performance shock, air spring, DPS 2-position remote damper, 235x32.5mm |
|
Size:
M , L , XL Trek IsoStrut, Fox Performance shock, air spring, DPS 2-position remote damper, 235mm x 32.5mm |
|
| Max compatible fork travel | 120mm (531mm axle-to-crown) |
| Wheel front | Bontrager Kovee Comp 23, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle |
|---|---|
| Wheel rear | Bontrager Kovee Comp 23, Tubeless Ready, Shimano Microspline freehub, Rapid Drive 108, Boost148 |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| *Rim |
Size:
S , M , L , XL Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, presta valve |
|
Size:
S , M , L , XL Bontrager Kovee Comp 23, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle |
|
| Tire | Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40'' |
| Tire part | Bontrager TLR sealant, 6oz |
| Rim strip | Bontrager TLR |
| Max tire size | Frame: 29x2.40" Fork: See manufacturer |
| Shifter | Shimano Deore M6100, 12 speed |
|---|---|
| Rear derailleur | Shimano XT M8100, long cage |
| *Crank arm |
Size:
S , M , L E*thirteen E*spec Race alloy, 34T, 170mm length |
|
Size:
XL E*thirteen E*spec Race alloy, 34T, 175mm length |
|
| Cassette | Shimano Deore M6100, 10-51, 12 speed |
| Chain | Shimano Deore M6100, 12 speed |
| Max chainring size | 32T with 52mm chainline |
| Saddle | Bontrager Arvada, hollow chromoly 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 |
Size:
S Bontrager Comp, alloy, 31.8mm, 5mm rise, 720mm width |
|
Size:
M , L , XL Bontrager Rhythm Comp, alloy, 31.8mm, 15mm rise, 750mm width |
|
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| *Stem |
Size:
S , M Bontrager Rhythm Comp, 31.8mm, Knock Block, 0 degree, 60mm length |
|
Size:
L , XL Bontrager Rhythm Comp, 31.8mm, Knock Block, 0 degree, 70mm length |
|
| Headset | Knock Block Integrated, 62-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano 4-piston hydraulic disc, MT4100 lever, MT420 caliper |
| *Brake rotor |
Size:
S , M , L , XL Shimano RT66, 6-bolt, 180mm |
|
Size:
S , M , L , XL Shimano RT66, 6-bolt, 203mm |
| E-bike system | Fazua Ride Trail 50 motor |
|---|---|
| Battery | Fazua Evation battery, 250Wh |
| Charger | Fazua Evation charger, 90-120V |
| Weight | M - 18.48 kg / 40.75 lbs (with TLR sealant, no tubes) |
|---|---|
| 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 letter | Actual frame size | Wheel size | A — Seat tube | B — 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 15.5 | 29" | 39.4 | 72.3° | 9.0 | 67.5° | 58.0 | 32.3 | 5.0 | 44.7 | 4.2 | 10.9 | 112.6 | 76.8 | 40.5 | 60.9 |
| M | 17.5 | 29" | 41.9 | 72.6° | 10.0 | 67.5° | 61.7 | 32.3 | 5.0 | 44.7 | 4.2 | 10.9 | 116.5 | 76.8 | 44.0 | 61.8 |
| L | 19.5 | 29" | 47.0 | 72.8° | 10.5 | 67.5° | 64.8 | 32.3 | 5.0 | 44.7 | 4.2 | 10.9 | 119.7 | 76.8 | 47.0 | 62.2 |
| XL | 21.5 | 29" | 50.8 | 72.8° | 11.0 | 67.5° | 67.0 | 32.3 | 5.0 | 44.7 | 4.2 | 10.9 | 121.9 | 76.8 | 49.0 | 62.7 |