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Trek Powerfly LT 9 2019 Electric Mountain Bike
You ride rugged trails, and you're ready to go further and faster than ever. You want the best trail bike capability, the latest in mountain bike and e-MTB tech and enough suspension to soak up the big hits and obstacles that you'll encounter.
A durable Alpha Platinum Aluminium frame that fully encases a long-range 500 Wh battery for great aesthetics and ride quality on the trail, a Bosch Performance CX motor and a Purion controller. Plus, an e-bike optimised FOX 36 fork with thicker, stiffer legs, RockShox rear shock with RE:aktiv damper, grippy 27.5+ mid-fat tyres, e-bike specific Powerline Comp 40 wheels with a 54-tooth Rapid Drive hub, a Bontrager Line dropper post and a 1x12 SRAM GX Eagle drivetrain.
This e-MTB checks all the boxes for rugged trail bike capability. It has high-end trail spec, long-travel suspension with advanced damper tech, upgraded Bontrager wheels and a powerful Bosch pedal-assist system. All together, this makes for a ridiculously capable performance ride that's the perfect companion for serious trail outings.
As demand for e-bikes continues to surge, Powerfly answers the call with a complete lineup of pedal-assist mountain bikes including Trek’s exclusive new Removable Integrated Battery. It fully integrates the Bosch 500Wh PowerTube battery into the down tube, but it’s still super easy to remove or install the battery thanks to the one-piece cover and built-in handle.
Powerfly is still offered in three families: Hardtail, Full Suspension (130mm), and Long Travel (150mm), but now we’re offering carbon models in the Long Travel lineup. We’re also offering a Powerfly Sport hardtail model that comes fully accessorised with fenders, rack, kickstand, and lights. For female riders looking for a better fit or different aesthetic, we have several Women’s models with lower standover on smaller sizes, narrower handlebars, and women’s-specific saddles.
There are major spec upgrades throughout the line, including more robust forks, more powerful 4-piston brakes, and tougher tyres. With Trek’s proven mountain bike frame technology, these pedal-assist bikes ride like true performance mountain bikes for more confident handling on the trails.
What’s new with the 2019 Trek Powerfly line-up?
As e-bikes continue to evolve, so does Powerfly. While the 4-level models carry forward last year’s semiintegrated frame, all other models feature Trek’s exclusive new Removable Integrated Battery, or RIB. The Bosch PowerTube 500 battery is fully integrated into the side of the downtube. It looks great and makes the frame compatible with a water bottle cage, but the biggest benefit is the convenience. Unlike other fully integrated batteries, RIB is simple to remove and re-install with a one-piece battery and frame cover – no tools or complicated parts.
Powerfly is still offered as three distinct families: Hardtail, Full Suspension (130mm) and Long Travel (150mm), but now we’re offering two carbon models in the Long Travel line-up. OCLV Mountain Carbon offers cleaner aesthetics, a quieter ride and easier handling thanks to lower weight. We’re also offering a Powerfly Sport hardtail model that comesfully accessorised with fenders, rack, kickstand and lights for those customers who want to use their Powerfly as a go-anywhere SUV.
Major spec upgrades include:
Most brands have integrated batteries now. Why is Trek’s Removable Integrated Battery (RIB) system better?
Trek took great pains to create the most user-friendly electric mountain bike. In most systems, the battery drops out of the bottom of the downtube. The problem with that is they’re prone to falling in the dirt and the underside of the downtube is where all the dirt and mud collects. Digging through miles of grime to get to your battery is not fun.
The RIB system accesses the battery on the drive-side of the downtube. It’s cleaner. Most people set their bike down or lean it on a wall on the non-drive side to remove the battery. Accessing the battery on the drive-side of the downtube is easier than reaching under the bike to pull out your battery.
On some integrated electric bikes, the in-tube battery and the frame cover are two pieces. The RIB system is a one-piece battery and frame cover. Simply turn the key and the one-piece battery pops out. Grab it by the integrated handle and carry it away. Then it’s just as easy to pop it back in.
The Trek RIB system is ingenious in its simplicity. You spend less time fussing with your bike and more time riding.
What’s the difference between 2019 Trek Powerfly FS and Powerfly LT? What's the best 2019 Trek Powerfly for you?
The 130mm Powerfly FS balances comfortable, efficient climbing with confident handling on descents and corners for the best overall trail bike feel. The 150mm Powerfly LT offers added downhill capability with more travel, more stable handling and more robust parts.
If you want a pedal-assist bike with full-suspension comfort and control for exploring on longer trail rides, then the 130mm Powerfly FS.
If you want a pedal-assist bike to help you get to their favourite descents with less effort, then the 150mm Powerfly LT. It’s more capable on steep, challenging terrain.
What’s the difference between Powerfly and Powerfly Women’s?
2019 Trek Powerfly Women’s models have the same high-performance frame technology and geometry as the mainline Powerfly hardtail. The three smallest sizes feature curved top tubes for lower standover height that makes mounting and dismounting easier for shorter riders. The Women’s models also come with women’s specific saddles, narrower handlebars and an alternate colour.
What isthe maximum tyre size for each frame platform?
The 130mm full suspension (FS) bikes and 150mm long travel (LT) bikes can accept up to 27.5x2.8” tyres. The 17.5” and larger size hardtail models can accept up to 29x2.4” or 27.5x2.8” tyres. The 15.5” and smaller hardtails will not fit 29” tyres, but can accommodate 27.5x2.8” tyres.
What if I need to replace the battery or battery cover?
Powerfly’s use a stock Bosch Powertube battery. The frame cover and battery are one-piece, but can be separated with an Allen key. Trek will sell frame covers through Trek retailers for replacement or for those that want to have a second battery that can be swapped quickly.
Are spare keys available?
Yes. Spare keys are available through the lock manufacturer, ABUS. They’ll need the key code printed on a card that’s included with the bike.
How fast can it go?
It will go as fast as your legs turn the pedals. However, the pedal assist cuts out at 25kph or 20mph.
Is there a way to bypass the speed governor to modify the top assisted speed?
No. It’s part of the programming. Modifying the regulated assisted speed will void the warranty and puts the rider at risk of violating laws governing pedal assist bikes.
Can I ride the bike in the rain or wet conditions? Can I wash it?
Yes. The Bosch system, including the battery, is weatherproof and will function fine in wet conditions. The motor isfurther protected from mud and stones by Trek’s exclusive Motor Armor that also acts as a skid plate over large obstacles. However, none of the Bosch components should ever be submerged in water or cleaned with a high-pressure hose or power washer.
How long doesthe battery last?
The 500Wh battery has an approximate range of 130km in Eco mode, and 60km in Turbo mode. Actual range will depend on variousfactors such as rider weight, terrain type, incline grade and individual riding style.
How long does it take to fully charge the battery?
For almost all of our bikes with the 4A charger, from empty to fully charged will take about 4.5 hours. From empty to 50% charged will take only 2 hours. The Powerfly 4 has a 2A charger. The 2A compact charger takes about 7.5 hoursfor a full charge.
Does the battery require any special care?
The battery should never be opened, as doing so not only voids all warranties, but also poses the risk of uncontrolled thermal reactions. Use only the provided Bosch eBike charger, which is specifically matched to the Bosch battery and has the right software for optimal charging and maintenance of the battery. Using any other charger will void the warranty and also risk malfunctions or reduced lifespan. Lithium-ion batteries have neither memory nor self-discharge effects, so the battery can be partially recharged at any time without affecting the service life.
Alpha Platinum Aluminium, ABP, Removable Integrated Battery (RIB), EVO link, tapered head tube, Knock Block, internal derailleur and dropper post routing, G2 Geometry, Boost148, 150 mm travel
Fox Performance 36 Float, GRIP adjustable damper, tapered steerer, Boost110, G2 Geometry w/51 mm offset, e-bike optimised, 160 mm travel
RockShox Deluxe RT3, RE:aktiv 3-position damper, tuned by Trek Suspension Lab, 205x57.5 mm
Bontrager Powerline Comp 40, 54T Rapid Drive, Tubeless Ready, Boost110 front, Boost148 rear, tubeless strips included, valves sold separately
Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120 tpi, aramid bead, 27.5x2.80˝
SRAM GX Eagle single-click, 12 speed
SRAM GX Eagle, Roller Bearing Clutch
SRAM X1, 15T w/chain guard
SRAM XG-1230 Eagle, 11-50, 12-speed
SRAM NX Eagle
Bolt-On Chainguide Tab, for MY19 Powerfly
Bontrager Arvada, hollow chromoly rails
Bontrager Line, 35 mm, 27.5 mm rise, 780 width
Bontrager Line, internal routing, 31.6 mm, 15.5: 100 mm, 17.5 & 18.5: 125 mm, 19.5 & 21.5: 150 mm
Bontrager Line, Knock Block, 35 mm clamp, 0-degree
Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom
Shimano Deore XT M8020 4-piston hydraulic disc
Bontrager XR Trail Elite, alloy lock-on
Bosch PowerTube 500 Wh
Bosch Purion Performance
Bosch Performance CX, 250 watt, 75 Nm
Matte Olive Grey
Key Bosch features on the Trek Powerfly Powerfly LT 9 2019 Electric Mountain Bike:
Bosch Performance CX
Bosch's Performance CX line is made for rugged off-road use with a maximum torque of up to 75 newton meters, sustained into the high cadence range for sporty acceleration and a sleek mid-mount motor for ideal weight balance and obstacle clearance
With a maximum torque of 75 Nm, the Performance Line CX is the ideal drive for ambitious and demanding eBikers. In eMTB mode, you always receive the required power – from Tour to Turbo. Up to 300% of perfectly delivered support, incredible dynamism and unique grip provide the best possible support on all terrains, as well as improved start-up behaviour. The progressive motor support automatically adapts to the individual's riding style, so there is no need to change support modes in eMTB mode.
Perfect support as soon as you step onto the pedals means that starting on steep slopes is significantly easier.
Thanks to the new eMTB mode, there is no need to change support modes, so the rider can concentrate fully on the trail.
Enables effortless riding and optimal traction thanks to improved control, even on challenging uphill sections or when encountering difficult obstacles.
A torque of up to 75 Nm ensures sporty acceleration even in alpine terrain, without changing gear.
More walk-assistance power
Stronger support up to speeds of 6 km/h makes pushing your bike much easier. Available from autumn 2017 and backwards compatible for all Performance Line CX systems.
For a powerful start uphill and in rough terrain. Improved moving-off behaviour guarantees optimal support in all terrains and on any trail. Noticeably easier, sporty starting as soon as you step onto the pedals.
Bosch Power Tube 500
With the PowerTube 500, Bosch offers a battery that fits perfectly inside the frame and that can be installed horizontally or vertically. Minimalist design opens up new possibilities for integration into the frame for bike manufacturers. The battery is concealed and perfectly protected by the frame. A convenient function means that the battery pops approx. 2 cm out of the frame when unlocked, making it easier to take hold of. In addition, a safety mechanism prevents the battery from falling out. The battery is also optimally protected by the frame. Recesses in the top surface are suitable for attaching bottle holders or design trims.
Bosch Purion Display
Bosch's Purion display features a fully-functional speedometer with a backlit display, service interval indicator and battery range indicator. It's thoughtful design allows riders to scroll through functions or choose the right level of support while maintaining contact with the handlebars
Charging status, speed, riding mode, range, trip distance, total distance
The display without play lighted from behind enables recognising all riding data.
The optional service interval display reminds you about fixing the next service appointment for your eBike with the specialist dealer.
The specialist dealer can monitor the status of your Bosch eBike System via the micro USB interface.
Focus on the essentials-
Five support steps, safe operation with thumbs, neat handle bar.
No support, Purion continues to provide all important information.
Effective, but gentle support, designed for maximum efficiency for long ranges.
Uniform support for long stretches, with clear focus on long ranges.
Immediate, powerful support for sports riding on natural terrain and even in city traffic.
Direct and maximum powerful support up to the highest pedalling rates for sports riding.
*The eMTB mode, specially designed for the Performance Line CX, dynamically varies between the Tour and Turbo riding modes, progressive motor support for maximum performance on the trail.
Key features on the Trek Powerfly Powerfly LT 9 2019 Electric Mountain Bike over other brands on the market:
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 – even on full suspension e-MTBs
Longer travel suspension and 27.5+ mid-fat tyres are the perfect combination for traction, stability and capability on rough trails
An advanced spec including e-MTB-specific parts and Trek's RE:aktiv damper take this model to the next level
It rides like a mountain bike because it is one: it has the same frame and suspension tech that we've refined in our decades-long trail heritage
Wider dropouts (110mm front, 148mm rear) gives you the stiffness of a 27.5" wheel with all the benefits of a 29" wheel, and Boost 148 at the back lets you run wider tyres and a larger chain ring without affecting Q-Factor and pedaling efficiency
Straight Shot with Knock Block
Trek's all new Straight Shot frame design featuring Knock Block frame defence optimises stiffness-to-weight ratio for a more responsive ride
ABP (Active Braking Pivot)
Our patented Active Braking Pivot allows your suspension to work freely whether you're on the brakes or off. It's smooth, controlled suspension that's at its best all the time
Advance frame geometry and a custom offset fork give our 29ers (and plus) precise handling at low speed without compromising high-speed stability. We call it G2 Geometry and it's why our 29ers (and plus) handle better than anyone else's
RE:aktiv brings Formula 1 technology to mountain bike suspension. A Trek Exclusive.
Better flow, better ride:
Any mountain biker understands the bliss that comes with zeroing in on the trail and nothing else. No outside distractions—including inconsistent suspension performance. That’s what it’s all about. More flow is RE:aktiv’s greatest gift.
You’ll accelerate as aggressively as you can without losing efficiency to pedal bob. You’ll confidently take gnarly, technical lines knowing that your rear shock will provide an instant, supple response. You’ll feel the difference of a shock that immediately transitions from soft to firm as you fly out of corners. You’ll experience the beauty of simply being in the moment.
RE:aktiv does exactly what you need it to do, exactly when you need it to. No more adjustments on the trail, no more choice between efficiency or control—pure confidence and enjoyment no matter what the trail brings you.
Set and forget:
RE:aktiv was designed to complement existing suspension settings, such as climb and trail modes. RE:aktiv can function effectively in all three settings, allowing you to simply pick the proper setting and let her rip. Wouldn’t it be nice to no longer interrupt your flow to flip between suspension settings during a ride? It simply makes the shock better all the time.