Woom UP 5 Limited kids electric bike Cirrus Cloud

Description

Woom UP 5 Limited kids’ e-bike Cirrus Cloud is a children’s electric mountain bike (e-MTB) with Fazua motor assistance, built on 24" wheels for riders roughly aged 7–11 (height 128–145 cm). It’s a performance-oriented model for off-road riding and longer outings, where a child needs smooth support on climbs and stable handling on the trail. From the factory, assist speed is limited to 20 km/h, which fits the kids’ segment and controlled use away from traffic.

Frame and geometry

The Woom Off frame is made from ALU 6061 aluminum alloy and uses a 12×135 mm rear thru-axle, which is a clear benefit on a kids’ e-MTB for lateral rear-end stiffness and more precise tracking. Up front, there’s a Woom Air Fork 24 air suspension fork with 80 mm travel, lockout (LO), and a 15×100 mm thru-axle, so the front end is ready for repeated hits off-road without unwanted flex. The headset is an integrated 1 1/8", supporting clean cable routing and straightforward serviceability. The manufacturer doesn’t list specific reach/stack numbers, but the concept is clearly aimed at a sporty kids’ geometry with an emphasis on stability off pavement.

Components

The drivetrain is based on Sram NX, with Sram NX Trigger 1×11 shifter and a Sram NX rear derailleur; range comes from a Sram NX PG-1130 11–42T cassette and Sram PC1110 chain. The Woom ALU cranks are 130 mm long with a 28T chainring, a sensible choice for kids’ cadence combined with an 11–42T cassette and motor assistance. Braking is handled by Promax Hydraulic with 160/140 mm rotors, i.e., a larger front rotor for higher loads when braking on descents. The Woom Off Disco Tech 24 wheelset uses thru-axles (15×100 / 12×135 mm) and 20 spokes; tires are Rocket Ron Addix Speed 24×2,35", targeting faster rolling while keeping traction on dirt and roots. The cockpit uses Woom ALU 31,8 mm handlebars with a width of 600 mm and a Woom Flip-flop ALU 50 mm stem with ±15° angle for easy position adjustment; the saddle is Woom and the seatpost is Woom ALU 27,2 mm (250 mm).

Ride characteristics

The combination of thru-axles and 24" wheels with 2,35" tires increases steering precision and reduces twitchiness in rough terrain, which is crucial for kids’ MTB when learning cornering and braking points. The 80 mm travel air fork lets you set pressure to match the child’s weight, and thanks to the lockout it also makes sense on paved transfers, where the goal is to limit bobbing. The Fazua 250 W motor with 55 Nm torque adds support mainly on climbs; the option to remove both the motor and the battery from the frame is practical, allowing you to reduce weight and ride without assistance. Hydraulic disc brakes with 160/140 mm rotors deliver consistent braking performance on longer descents, where mechanical systems often lose modulation.

Who it’s for

Woom UP 5 Limited is intended for kids with a sporty riding style who ride off-road, forest roads, and lighter trails and need to keep up with adults on shared rides. It makes sense for families dealing with elevation gain and route length: thanks to the 1×11 drivetrain and Fazua assist, the child doesn’t have to “spin at the limit” on every hill, while the logic of classic MTB controls is preserved. The system weight limit is 80 kg, leaving room for longer use within the given size category.

Key specifications

• Frame: Woom Off, ALU 6061, 12×135 mm thru-axle
• Fork: Woom Air Fork 24, 80 mm, LO, 15×100 mm thru-axle
• Motor and battery: Fazua 250 W, 55 Nm, assist up to 20 km/h; 250 Wh battery
• Shifting: Sram NX 1×11 (NX Trigger + NX rear derailleur), PG-1130 11–42T cassette
• Brakes: Promax Hydraulic, 160/140 mm rotors
• Wheels and tires: 24" Woom Off Disco Tech 24, 20 spokes; Rocket Ron Addix Speed 24×2,35"
• Weight: 15,8 kg
• Cockpit: 600 mm handlebars (31,8 mm), 50 mm stem (±15°), 27,2 mm seatpost

EAN: 9120136981385