Trek Powerfly 4 Azure/Nautical Navy
It's built with parts that hold up, like a smooth-shifting Shimano drive train, and a powerful Bosch motor. Plus, it features user-friendly Removable Integrated Battery (RIB) system that's fully encased in the frame yet doesn't require tools for removal. This bike expands your boundaries and lets you travel to destinations that you never thought you'd reach on a mountain bike.
Model Year 2022
A tough yet refined aluminium frame that fully encases a long-range 500 Wh battery for sleek looks, a Bosch Performance CX (250 W, 85 Nm) motor that assists up to 25 km/h, a Bosch Purion controller, a 1x10 Shimano drivetrain and a suspension fork with lockout. Plus, Smart Wheel Sizing means riders of every size get a great fit – 29˝ wheels on larger frames, 27.5˝ wheels on smaller frames.
Our most affordable electric mountain bike comes with the same powerful Bosch motor and intuitive controller as our most expensive e-bikes, with a smaller battery and parts chosen to give you great value.
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
This bike expands boundaries: the top-notch Bosch system is equally suited to commuting, recreation and a ridiculously fun time on the trails
The Purion controller has Walk Assist and an intelligent eMTB mode that automatically delivers the right amount of power based on your terrain
It's equipped with an external charging port for easy charging on or off the bike
You can boost your Powerfly’s utility by adding a rack and mudguards, plus built-in wiring lets you easily install lights powered by the motor
Frame: Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148
Size XS: SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 80 mm travel
Size S , M , L , XL: SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel
Hub front: Formula DC-511, 6-bolt, Boost110, 15 mm thru axle
Hub rear: Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle
Skewer rear: Bontrager Switch thru-axle, removable lever
Rim: Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve
Spokes: 14 g stainless steel
Size XS , S: Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35"
Size M , L , XL: Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30"
Max tyre size: Frame: 29x2.60" or 27.5x2.8" (XS & S: 27.5x2.60") Fork: See manufacturer
Shifter: Shimano Deore M4100, 10 speed
Rear derailleur: Shimano Deore M5120, long cage
Crank: FSA Bosch CK-220, 36T ring, 165 mm length
Cassette: Shimano Deore M4100, 11-46, 10-speed
Chain: KMC X10, 10-speed
Pedal: VP-536 nylon platform
Saddle: Bontrager Commuter Comp
Size XS , S: Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
Size M: Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length
Size L , XL: Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
Size XS , S: Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width
Size M , L , XL: Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Grips: Bontrager XR Endurance Comp
Size XS: Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 50 mm length
Size S , M: Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length
Size: L , XL: Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length
Head set: FSA IS-2, 1-1/8" top, 1.5" bottom
Brake: Tektro HD-M275 hydraulic disc
Brake rotor: Tektro, 6-bolt, 203 mm
Battery: Bosch PowerTube, vertical, 500 wh
Charger: Bosch compact 2A (100-240 V) charger
Controller: Bosch Purion
Motor: Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 25 km/h (15.5 mph) max assist, 32 km/h for New Zealand
Weight: M - 23.67 kg / 52.18 lb (with tubes)
Weight limit: This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
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