E-Caliber 9.9 XX1 AXS | Trek Bikes

Overview

You wanna ride your heart out on a lightweight e-MTB that rips singletrack just like a regular XC bike, but can give you an unobtrusive boost when you want one. You also want an amazing parts spec, filled with carbon and cutting edge tech like a fully wireless electronic drivetrain and our IsoStrut shock.

A lightweight, full OCLV Mountain Carbon frame with 60mm of travel, a 120mm RockShox SID Ultimate fork with Charger Race Day damper, remote lockout, and Trek's exclusive lightweight IsoStrut FOX Factory shock. A Fazua Evation motor and 250Wh battery that can assist up to 20 mph when it's on, and gives zero drag when it's off, plus a handlebar-mounted Fazua Remote FX controller. A SRAM XX1 Eagle AXS wireless electronic drivetrain, a Bontrager XXX carbon seatpost, and Kovee XXX 30 carbon wheels.

Our top-shelf E-Caliber is light, fast, and built to rip. It rides like an XC race bike—like a Supercaliber, in fact—until you decide you want a little boost to scramble up a climb or put in a few extra laps.

The SRAM XX1 Eagle AXS drivetrain is smart, smooth, and completely wireless
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

"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."

"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."

Customize

E-Caliber 9.9 XX1 AXS

E-Caliber 9.9 XX1 AXS

$13,699.99

Customize

E-Caliber 9.9 XTR

E-Caliber 9.9 XTR

$12,549.99

Customize

E-Caliber 9.8 GX AXS

E-Caliber 9.8 GX AXS

$10,199.99

Customize

E-Caliber 9.8 GX

E-Caliber 9.8 GX

$9,199.99

Customize

E-Caliber 9.8 XT

E-Caliber 9.8 XT

$9,049.99

E-Caliber 9.6

$6,649.99

E-Caliber 9.9 XTR

E-Caliber 9.9 XTR

$12,549.99

E-Caliber 9.8 GX AXS

E-Caliber 9.8 GX AXS

$10,049.99

E-Caliber 9.8 GX

E-Caliber 9.8 GX

$9,049.99

E-Caliber 9.8 XT

E-Caliber 9.8 XT

$9,049.99

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Going where no bike has gone before with Payson McElveen and E-Caliber.

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 video

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Features

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.

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.

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

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.

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

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.

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.

Specs

*Please note - spec applies to all sizes unless listed separately

Frame	OCLV Mountain Carbon main frame & stays, IsoStrut, tapered head tube, Knock Block, Control Freak internal routing, Boost148, 60mm travel
Fork	RockShox SID Ultimate, DebonAir spring, Charger Race Day damper, remote lockout, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 120mm travel
*Shock	Size: S Trek IsoStrut, Fox Factory shock, air spring, DPS 2-position remote damper, Kashima Coat, 235x32.5mm
*Shock	Size: M , L , XL Trek IsoStrut, Fox Factory shock, air spring, DPS 2-position remote damper, Kashima Coat, 235mm x 32.5mm
Max compatible fork travel	120mm (531mm axle-to-crown)

Wheel front	Bontrager Kovee XXX, OCLV Mountain Carbon, Tubeless Ready, centerlock, Boost110, 15mm thru axle
Wheel rear	Bontrager Kovee XXX, OCLV Mountain Carbon, Tubeless Ready, DT Swiss 54T engagement, centerlock, SRAM XD driver, Boost148, 12mm thru axle
Tire	Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''
Tire part	Bontrager TLR sealant, 6oz
Max tire size	Frame: 29x2.40" Fork: See manufacturer

Shifter	SRAM Eagle AXS, wireless, 12-speed
Rear derailleur	SRAM XX1 Eagle AXS
*Crank arm	Size: S , M , L Ethirteen Espec Race Carbon, 32T, 170mm length
*Crank arm	Size: XL Ethirteen Espec Race Carbon, 32T, 175mm length
Cassette	SRAM Eagle XG-1299, 10-52, 12 speed
Chain	SRAM XX1 Eagle, 12 speed
Max chainring size	32T with 52mm chainline, 36T with 55mm chainline

Saddle	Bontrager P3 Verse Pro, carbon rails, 145mm width
*Seatpost	Size: S Bontrager XXX, OCLV Carbon, 31.6mm, 0mm offset, 330mm length
*Seatpost	Size: M , L , XL Bontrager XXX, OCLV Carbon, 31.6mm, 0mm offset, 400mm 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
*Stem	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 XTR M9120 4-piston hydraulic disc
*Brake rotor	Size: S , M , L , XL Shimano MT900, 203mm, centerlock
*Brake rotor	Size: S , M , L , XL Shimano EM910, 180mm, centerlock

Battery	Fazua Evation battery, 250Wh
Charger	Fazua Evation charger, 90-120V
Controller	Fazua Remote bX
Motor	Fazua Evation Drive Pack, 20mph max assist

Weight	M - 16.35 kg / 36.06 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).

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. Prices shown are manufacturer's suggested retail prices.

Bike and frame weights are based off pre-production painted frames at time of publication. Weights may vary in final production.

Sizing

Geometry

All measurements provided in cm unless otherwise noted.

Sizing table
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

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