2019

Powerfly FS 7 Plus

Model 23259

Powerfly FS 7 is a full suspension mid-fat electric mountain bike with a fully integrated battery and a performance suspension package for incredible capability on more rugged trails. A Bosch Performance CX motor for speeds up to 20 mph, 27.5+ mid-fat tires for extra stability and traction, RockShox suspension, and the latest in e-MTB frame design will bring your off-road adventures to entirely new places.

You want to push boundaries and go to otherwise unreachable places on your mountain bike. You want all the benefits of an advanced pedal-assist system along with the handling, suspension performance, and capability of a true 27.5+ mid-fat trail bike.

A durable Alpha Platinum Aluminum frame that fully encases a long-range 500Wh battery for great aesthetics and ride quality on the trail, a Bosch Performance CX motor and an ergonomic Purion controller. Plus, 130mm front and rear travel with a RockShox Revelation RL fork, grippy 27.5+ mid-fat tires, Tubeless Ready Bontrager Line Comp wheels with a 54-tooth Rapid Drive hub, a dropper post, and an 11-speed Shimano SLX/XT drivetrain.

Powerfly FS 7 is more than the sum of its parts. It has a high-performance Bosch motor and high-performance trail bike parts, but together these elements make a go-anywhere e-MTB that changes where and how you can ride. The pedal-assist system, dropper post, and 27.5+ mid-fat tires make it a great bike for exploring steeper, rougher terrain.

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 to remove the battery without tools, and lets you mount a water bottle cage—even on full suspension e-MTBs
For e-MTB, full suspension is a game-changer: it soaks up rugged terrain so you can ride the Bosch pedal-assist system to its full potential
It rides like a mountain bike because it is one: it has the same frame and suspension tech we've refined in our decades-long trail heritage
When you power down the assist, you have a fully capable trail bike that's ready to take on rugged terrain
Even when the trail gets rough, the wide 27.5+ tires deliver more confidence, traction, and stability

"It's nice to have a dropper post, fully-adjustable suspension, and a frame that is well-balanced. The drive system is positioned well and performs incredibly. Trek really dialed in their rear suspension and ABP reduces skipping so the rear wheel track the ground. The removable battery pack with a handle makes this an easy bike to lift, transport, service on the trail, and park securely."

"On terrain that an elite-level XC racer would struggle to conquer, the Powerfly winched up huge mountains with seamless power delivery, especially in eMTB mode that automatically matches your effort. Planted and sure-footed on the descents, it gives you the confidence to release your grip on the powerful brakes and push the tires to the limit."

"The eMTB mode is a fantastic alternative to the manually adjusted power settings found on most other e-bikes. The beauty is that eMTB mode works so well, you can forget about it entirely and focus on the ride instead. Having e-bike specific forks and four piston brakes for example is something that seems obvious, but surprisingly few companies actually make happen."

2019

Powerfly FS 5

$4,799.99

SALE 2018

Powerfly FS 5

$3,799.99 | $4,699.99

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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RIB is a one-piece battery and cover with a built-in handle that can easily be removed and re-installed in the frame with no tools and no hassle. It’s the most convenient way to remove your battery for transport, security, or just easier charging.

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.

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Trek’s all-new Straight Shot frame design featuring Knock Block frame defense optimizes stiffness-to-weight ratio for a more responsive ride.

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Bosch’s Performance CX line is made for rugged off-road use with a maximum torque of up to 75 newton meters, sustained power into the high cadence range for sporty acceleration, and a sleek mid-mount motor for ideal weight balance and obstacle clearance.

Bosch's Purion display features a fully-functional speedometer with a backlit display, service interval indicator, and battery range indicator. Its thoughtful design allows riders to scroll through functions or choose the right level of support while maintaining contact with handlebars.

This unique protection-shield made of lightweight but robust aluminum protects the motor against stones.

Our premium lightweight aluminum is continuously cold extruded and butted at multiple points, and hydroformed into sophisticated tube shapes for maximum strength and minimum weight.

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.

Frameset

Frame

Alpha Platinum Aluminum, ABP, Removable Integrated Battery (RIB), EVO link, tapered head tube, Knock Block, internal derailleur & dropper post routing, G2 Geometry, Boost148, 130mm travel

Front suspension

RockShox Revelation RL, DebonAir, Motion Control RC damper, tapered steerer, Boost110, G2 Geometry w/51mm offset, 130mm travel

Rear suspension

RockShox Deluxe RL, 205x50mm
Wheels

Wheels

Bontrager Line Comp 40, Tubeless Ready, 54T Rapid Drive, Boost110 front, Boost148 rear, tubeless strips included, valves sold separately

Tires

Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 27.5x2.80˝
Drivetrain

Shifters

Shimano SLX M7000, 11 speed

Rear derailleur

Shimano Deore XT M8000, Shadow Plus

Crank

Race Aeffect, 15T w/chainguard

Cassette

Shimano SLX M7000, 11-46, 11 speed

Chain

Shimano HG600, 11 speed

Pedals

VP-536 nylon platform
Components

Saddle

Bontrager Arvada

Seatpost

Dropper post, 31.6mm, internal routing

Handlebar

Bontrager alloy, 31.8mm, 15mm rise, 750mm width

Grips

Bontrager XR Trail Comp, nylon lock-on

Stem

Bontrager Rhythm Comp, Knock Block, 31.8mm clamp, 0 degree

Headset

Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom

Brakeset

Shimano Deore M6000 hydraulic disc
Accessories

Battery

Bosch PowerTube 500Wh

Controller

Bosch Purion

Motor

Bosch Performance CX
Weight

Weight

17.5˝ - 23.13 kg / 51 lbs (with 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, and materials.

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

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 Trek retailer.

Rider Height

Inseam

15.5

153.0 - 162.0 cm

5'0.2" - 5'3.8"

72.0 - 76.0 cm

28.3" - 29.9"

17.5

161.0 - 172.0 cm

5'3.4" - 5'7.7"

76.0 - 81.0 cm

29.9" - 31.9"

18.5

170.0 - 179.0 cm

5'6.9" - 5'10.5"

80.0 - 84.0 cm

31.5" - 33.1"

19.5

177.0 - 188.0 cm

5'9.7" - 6'2.0"

83.0 - 88.0 cm

32.7" - 34.6"

21.5

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 number	Geometry position	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
15.5 in	High	27.5"	36.8	72.9°	10	67.4°	57	33.8	1.8	47.4	5.1	9.3	117.6	77.5	39.9	58.9
15.5 in	Low	27.5"	36.8	72.4°	10	66.9°	57	33.2	2.4	47.4	5.1	9.6	117.7	77	40.5	59.4
17.5 in	High	27.5"	41.9	72.9°	10	67.4°	60	33.8	1.8	47.4	5.1	9.3	120.7	76.5	43.5	58.8
17.5 in	Low	27.5"	41.9	72.4°	10	66.9°	60	33.2	2.4	47.4	5.1	9.6	120.7	76	43.5	59.3
18.5 in	High	27.5"	44.5	72.9°	10.5	67.4°	62	33.8	1.8	47.4	5.1	9.3	122.7	75.3	46.1	59.2
18.5 in	Low	27.5"	44.5	72.4°	10.5	66.9°	62	33.2	2.4	47.4	5.1	9.6	122.8	74.8	45.3	59.8
19.5 in	High	27.5"	47	72.9°	11	67.4°	63.4	33.8	1.8	47.4	5.1	9.3	124.2	75.1	47.3	59.2
19.5 in	Low	27.5"	47	72.4°	11	66.9°	63.4	33.2	2.4	47.4	5.1	9.6	124.3	74.6	46.6	60.2
21.5 in	High	27.5"	52.1	72.9°	12.5	67.4°	66.2	33.8	1.8	47.4	5.1	9.3	127.2	76.3	49.7	60.9
21.5 in	Low	27.5"	52.1	72.4°	12.5	66.9°	66.2	33.2	2.4	47.4	5.1	9.6	127.3	75.8	49	61.6