The Niner WFO E9 has a reliable and durable Bosch motor, providing riders with three levels of pedal-assist.
The bike has a high-quality aluminum frame.
The aluminum frame has a lifetime warranty on the WFO E9.
Niner utilizes aluminum in the frame of the WFO E9 because it manages the heat produced by the motor and battery better than carbon e-bike frames.
The bike has a 29-inch wheel and tire in the front paired with a 27.5-inch setup in the rear. This setup allows the rider to roll over obstacles with ease.
The Maxxis Minion DHF in the front and Maxxis Aggressor tire in the rear provide riders with fantastic traction over rough off-road terrain.
Niner utilizes SRAM RE brakes with 200mm rotors to provide riders with excellent stopping power.
The Horst Link suspension provides riders with 180mm of travel. The coil shock is quick to respond to big hits.
The WFO E9 has a 12-speed SRAM drivetrain that is made specifically for e-bikes.
The long wheelbase and slack geometry of the bike provide riders with stability on descents.
Weighing in at 54.75 lbs., the weight of the WFO E9 does not prevent riders from overcoming technical obstacles in their path.
The bike is a Class 1 e-bike, with pedal assist up to 20mph. Experts found that they could easily exceed this speed on the bike.
Experts state that the bike is an affordable, quality e-bike in its category.

2 reasons not to buy

The bike comes with a 125 mm dropper. Experts suggest upgrading to a longer dropper post.
One expert found the WFO E9 hard to maneuver through tight turns.

Bottom line

The Niner WFO E9 is a self-shuttling downhill mountain bike. The bike has 180mm of travel with its Horst Link suspension set up. The bike has a durable and reliable 4th Generation Bosch Line CX motor. The aluminum frame on the bike has a lifetime warranty and manages the heat from the motor and battery better than carbon. The bike has three levels of pedal-assist and an e-bike specific 12-speed SRAM drivetrain. The bike is long, making it hard to maneuver through tight corners. Experts found the bike affordable.

Expert Reviews

80/100 based on 1 rated expert review

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Velo

Level 5 expert

Niner WFO E9 Review

Level 5 expert

This bike isn’t for everyone, but it gives riders who want to push their downhill limits one more reason to “pedal dammit,” Niner’s tagline, and get to new zones, or lap old ones, at a fraction of the physical output previously required.

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The Loam Wolf

Level 5 expert