More options
It's right for you if...
This bike is perfect for XC riders who want to push a little further 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 60 mm of travel, a 120 mm RockShox Gold RL fork and Trek's IsoStrut FOX Performance shock. A Fazua Evation drive system that can assist up to 20 mph (25 km/h in Europe) when it's on, and gives zero drag when it's off, plus a Shimano Deore 12-speed drive train, dropper post for getting low on descents and Bontrager Kovee Comp 23 wheels.
The final word
The 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 analogue 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 2.9 kg 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 favourite 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 those 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 moreFeatures
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 customise your ride.
Smart software for the trail
The 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 customise your user settings.
Removable drivepack
Remove the motor and drivepack to save 2.9 kg/6.4 lb on days when you don't need the boost. The included cover also turns the down tube into extra storage.
The E-Caliber has the same innovative IsoStrut rear suspension as the World Cup-winning Supercaliber. You get 60 mm 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 fibre is tougher carbon, with unique materials and lay-up procedures, Trek's advanced engineering, and a higher standard of testing.
Suspension Calculator
This suspension calculator will help you optimise 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 tyres make it easy to ditch the tubes so you get better traction, fewer flats and less weight. You're ready to roll straight 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 at the back lets you run wider tyres and a larger chain ring without affecting q-factor and pedalling efficiency.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | OCLV Mountain Carbon main frame and stays, IsoStrut, tapered head tube, Knock Block, Control Freak internal routing, Boost148, 60 mm travel |
|---|---|
| Fork | RockShox 35 Gold RL, DebonAir spring, Motion Control damper, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel |
| *Shock |
Size:
S Trek IsoStrut, Fox Performance shock, air spring, DPS 2-position remote damper, 235x32.5 mm |
|
Size:
M , L , XL Trek IsoStrut, Fox Performance shock, air spring, DPS 2-position remote damper, 235 mm x 32.5 mm |
|
| Max compatible fork travel | 120mm (531mm axle-to-crown) |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Rim | Bontrager Kovee Comp, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve |
| Tyre | Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40" |
| Tyre part | Bontrager TLR sealant, 180 ml/6 oz |
| Max tyre size | Frame: 29x2.40" Fork: See manufacturer |
| Shifter | Shimano Deore M6100, 12-speed |
|---|---|
| Rear derailleur | Shimano XT M8100, long cage |
| Cassette | Shimano Deore M6100, 10-51, 12-speed |
| Chain | Shimano Deore M6100 |
| Max. chainring size | 32T with 52mm chainline, 36T with 55mm chainline |
| Saddle | Bontrager Arvada, hollow chromoly rails, 138 mm width |
|---|---|
| *Seatpost |
Size:
S TranzX JD-YSP18, 100 mm travel, internal routing, 31.6 mm, 361 mm length |
|
Size:
M , L , XL TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length |
|
| *Handlebar |
Size:
S Bontrager Comp, alloy, 31.8 mm, 5 mm rise, 720 mm width |
|
Size:
M , L , XL Bontrager Rhythm Comp, alloy, 31.8 mm, 15 mm rise, 750 mm width |
|
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| *Stem |
Size:
S , M Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length |
|
Size:
L , XL Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 70 mm length |
|
| Brake | Shimano 4-piston hydraulic disc, MT4100 lever, MT420 calliper |
| Brake rotor | Shimano RT66, 6-bolt, 180mm |
| Battery | Fazua Evation battery, 250 Wh |
|---|---|
| Charger | Fazua Evation charger, 220-240V |
| Controller | Fazua Remote bX |
| Motor | Fazua Evation Drive Pack, 25 km/h (15.5 mph) max assist, 32 km/h for New Zealand |
| 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 136 kg (300 lb). |
Sizing & Tech
Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.
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 stated.
| Frame size letter | 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 | 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 | 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 | 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 | 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 |