Trek Powerfly 4 2021
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The 2021 Powerfly 4 is our most affordable electric mountain bike. It's built with parts that hold up, like a dependable Shimano drivetrain, an SR Suntour fork and a powerful GEN 4 Bosch motor. Plus, it features the 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.
It's right for you if...
You're sold on the e-bike revolution and want the capability and versatility of a mountain bike at a price that doesn't resemble the car you're trying to use less. You want bigger, better trail adventures and know that an e-MTB with the latest user-friendly tech is the best way to get them.
The tech you get
- A lightweight and durable Alpha Platinum Aluminium frame that fully encases a long-range 500Wh battery for sleek looks and protection on the trail.
- Bosch performance CX (250W, 75Nm) motor that assists up to 32 km/h, an ergonomic Bosch Purion controller
- Shimano drivetrain, a 120mm SR Suntour XCR fork with lockout, and hydraulic disc brakes.
- Plus, Smart Wheel Sizing means you'll get the fastest wheel that fits – 29˝ wheels on larger frames, 27.5˝ wheels on smaller frames.
The final word
Our most affordable electric mountain bike is equipped with performance parts, a high-end Bosch GEN 4 motor, powerful battery and intuitive controller for confidence and a fun boost on trails and roads.