W
WoomWoom UP (E-Bike)
e-mtb
01
Origin
Launched in 2020, the Woom UP emerged from a clear gap: kids outpacing their parents on the ascent, or simply running out of stamina before the fun starts. Woom chose Fazua — the lightest performance e-drive system available — to keep the UP within striking distance of their non-e bikes by weight.
02
Specifications
- Frame
- 6061-T6 aluminum, butted and hydroformed tubes; integrated motor/battery cavity; designed around Fazua powerpack integration
- Weight
- kg
- Drivetrain
- 11-speed SRAM NX trigger shifter + rear derailleur; 28T narrow-wide direct-mount chainring; assisted by Fazua Ride 50 Trail motor
- Brakes
- Promax hydraulic disc brakes; 160/160 mm rotors front and rear; child-ergonomic lever reach
- Wheels
- 24" (UP 5) or 26" (UP 6); tubeless-ready
03
The verdict
+Strengths
- Fazua Ride 50 Trail delivers smooth, natural pedal assist that enhances rather than overwhelms the riding experience
- Class-leading weight for a kids e-MTB — stays manageable when the battery runs out
- Full adult-quality spec (11-speed SRAM, Promax hydraulic discs, Schwalbe Rocket Ron) on a kid-sized frame
−Weaknesses
- Premium price — the most expensive bikes in the woom lineup by a wide margin
- 250 Wh battery is small vs adult e-MTBs; range depends heavily on assist level and terrain
- Fazua system requires specialist service tools not available at all bike shops
04
Versions & builds
Every official build side by side — differences highlighted.
| Spec | Woom UP 5 (24") | Woom UP 6 (26") |
|---|---|---|
| Drivetrain | 11-speed SRAM NX trigger shifter + derailleur, 28T narrow-wide chainring, direct-mount | 11-speed SRAM NX trigger shifter + derailleur, 28T narrow-wide chainring |
| Brakes | Promax hydraulic disc, 160/160 mm rotors | Promax hydraulic disc, 160/160 mm rotors |
05
Tags
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