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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."
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"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."
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Which generation is right for you?
Saddle up with E-Caliber Gen 1 for just enough power on long, fast miles or E-Caliber Gen 2 for a lighter and more powerful ride.
Learn moreService manual
Time to bust out the repair stand for some maintenance? Find a detailed breakdown of your bike with part numbers, torque values, and platform-specific tech instructions below.
Get it hereAscending new heights
Going where no bike has gone before with Payson McElveen and E-Caliber.
Read moreWondering 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 videoFast 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.
Compliant with leading safety regulations
The e-systems on Trek and Electra e-bikes are third-party tested to meet the latest e-bike safety regulations, including the stringent UL 2849 certification — so all you have to worry about is where your e-bike will take you next.
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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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.
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Carbon Care Wheel Loyalty Program
Every set of Bontrager carbon wheels is backed by the Carbon Care Wheel Loyalty Program. In the unlikely event that you damage your Bontrager carbon wheels within the first two years of ownership, we’ll repair or replace them for free.
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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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Rapid Drive 108 rear hub
With 108 points of engagement, Rapid Drive gives you nearly instant acceleration instead of a clunky lag when you step on the pedals. You get smooth, immediate power to blast out of corners and hammer through the rough stuff. And that extra pedal ratchet adds control that can make all the difference when tackling a tricky climb.
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.
| Frame | OCLV Mountain Carbon main frame & stays, IsoStrut, tapered head tube, Knock Block, Control Freak internal routing, Boost148, 60mm travel |
|---|---|
| Fork | RockShox SID Select+, DebonAir spring, Charger 2 RL 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 Pro 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle |
|---|---|
| Wheel rear | Bontrager Kovee Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, Shimano MicoSpline, 6-bolt, Boost148, 12mm thru axle |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Rim | Bontrager Kovee Pro 30, OCLV Mountain Carbon, Tubeless Ready |
| 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 |
| E-bike system | Fazua Ride Trail 50 motor |
|---|---|
| Battery | Fazua Evation battery, 250Wh |
| Charger | Fazua Evation charger, 90-120V |
| Controller | Fazua Remote bX |
| Shifter | Shimano XT M8100, 12 speed |
|---|---|
| Rear derailleur | Shimano XT M8100, long cage |
| Crank | E*thirteen E*spec Race Carbon, 32T, 175mm length |
| Crank arm | E*thirteen E*spec Race Carbon, 32T, 170mm length |
| Cassette | Shimano XT M8100, 10-51, 12 speed |
| Chain | Shimano Ultegra/XT M8100, 12 speed |
| Max chainring size | 1x: 32T |
| Saddle | Bontrager Verse Elite, austenite rails, 145mm width |
|---|---|
| *Seatpost |
Size:
S Bontrager Line Elite Dropper, 100mm travel, MaxFlow, internal routing, 31.6mm, 340mm length |
|
Size:
M , L , XL Bontrager Line Elite Dropper, 150mm travel, MaxFlow, internal routing, 31.6mm, 440mm length |
|
| Handlebar | Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width |
| Grips | ESI Chunky |
| *Stem |
Size:
S , M Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 60mm length |
|
Size:
L , XL Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 70mm length |
|
| Headset | Knock Block Integrated, 62-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano XT M8120 4-piston hydraulic disc |
| *Brake rotor |
Size:
S , M , L , XL Shimano RT86, 6-bolt, 180mm |
|
Size:
S , M , L , XL Shimano RT86, 6-bolt, 203mm |
| Tool | Bontrager Switch thru axle, removable lever |
|---|
| Weight | M - 16.94 kg / 37.34 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). |