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Niner WFO e9

$2,799

$6,999 new

-60%Sale -$200

Price before Upway discount: $2,999

Sold

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Why we love it

The Niner WFO e9 is an electric mountain bike built for adventure and performance. With its robust frame and powerful electric motor, it's ready to conquer challenging trails and steep ascents with ease. This bike is the perfect choice for riders seeking an exhilarating off-road experience with the added boost of electric assistance, allowing you to explore rugged terrain and enjoy the thrill of mountain biking like never before. Elevate your outdoor adventures with the Niner WFO e9.

Top features

1

High-performance, reliable, top of the line engine for powerful assistance on all types of terrain

2

Wide tires for excellent stability

3

Never-owned-before electric bike, with little or no use

Specifications

General

Brand: Niner

Model: WFO e9

Usage: Mountain bike

Mountain bike category: Full-suspension

Color: Grey

Year: 2023

Mileage: < 3 mi

Weight: 57 lb

Frame type: Closed

Sizing

Manufacturer's size: L (ideal for people between 5ft 9in and 6ft 5in)

Seat tube length: 48 cm

Stand-over height: 84 cm

Electrical

Battery

Condition: From origin

Battery capacity: 625 Wh

Number of cycles of battery charge: 1

Battery location: Frame

Battery removable: Yes

UL certified: Yes. Available for purchase anywhere in the US.

Motor

Brand: Bosch

Model: Performance Line CX

Engine location: Mid-drive

Engine torque: 85 Nm

Engine power: 250 W

Assistance type: Pedal

Max speed: 20 mph

e-Bike class: Class 1

Mechanical

Frame & Suspensions

Frame material: Aluminum

Fork model: RockShox ZEB R

Fork travel: 180 mm

Rear shock model: Marzocchi Bomber CR

Rear shock stroke: 65 mm

Drivetrain & Braking

Shifting: Derailleur

Transmission: Chain

Derailleur model: SRAM SX

Number of speeds: 12

Brakes: Disk | Hydraulic

Wheels & Tires

Wheels size: 29" (front), 27.5" (rear)

Tires: Schwalbe Eddy Current (60-622 - 28 x 2.35)

Dropper post: Yes

History and Inspection Report

Inspection

Every e-Bike we sell undergoes our 50-point inspection process. Anything that doesn’t meet our standards is repaired or replaced by our mechanics.

Niner WFO e9 (2023)

Frame, drivetrain, braking system, wheels, tires and suspensions inspected and tested

Battery, motor and display diagnosed and in healthy condition

Software up-to-date

Test ride, deep cleaning and final quality control check

This bike has been inspected and tested in Brooklyn in March 2025.

Documents

Ownership history

This Niner WFO e9 was sold to us directly from a bike shop in March 2025.

Mechanic's note

This bike is brand-new. There are no scratches and the components are all in perfect condition. Modern mountain bike geometry has evolved beyond traditional S/M/L sizing, with minimal differences in stack height and seat tube length. A larger frame provides a planted, stable ride feel, while a smaller frame leads to a more reactive, playful experience. Riders can now choose size based on preferred ride style rather than just height. Our recommendations reflect this modern, more flexible approach to sizing.

Additional notes

Note that dropper posts usually have a slight side-to-side play.