The Cube Acid 240 Hybrid Rookie Pro 400X in Actionteam brings real full-support e-MTB performance to young mountain bikers (sized for riders ~124–141 cm tall) looking to tackle longer trail loops alongside adult riders. Dressed in Cube’s iconic factory "Actionteam" blue, red, and orange racing livery, the frame is constructed from double-butted Aluminium Superlite with Agile Ride Geometry, Boost 148 rear spacing, and a Universal Derailleur Hanger (UDH) dropout. Cable routing is handled cleanly through the headset, and the downtube seamlessly integrates the lightweight power unit to keep the center of gravity low and handling predictable.
At the heart of the build is Bosch’s lightweight Performance Line SX drive unit, outputting 55Nm of torque powered by an integrated 400Wh CompactTube battery and controlled via the top-tube/handlebar-mounted Bosch Purion 200 color display. Trail bump absorption is handled by an 80mm SR Suntour XCT DS suspension fork, while shifting and stopping duties rely on a wide-range 9-speed Shimano CUES 11-46T drivetrain and Shimano MT200 hydraulic disc brakes. Rolling on grippy 24x2.1" Schwalbe Rocket Ron Kevlar tires and featuring child-proportioned 19mm handlebar grips, this 17.6 kg e-hardtail provides genuine off-road capability.
Specifications Breakdown
E-Drive System
Motor: Bosch Performance Line SX (BDU31), Smart System, max 55Nm torque.
Battery: Bosch CompactTube 400Wh (Integrated downtube battery, compatible with optional 250Wh PowerMore range extender).
Display & Control: Bosch Purion 200 with integrated color display and thumb controls.
Charger: Bosch 2A Charger.
Frameset & Suspension
Frame: Aluminium Superlite, Agile Ride Geometry, Boost 148, UDH™, Integrated Fixed Battery, Advanced Internal Cable Routing (ICR), Dropper Post Ready, Kickstand/Fender/Carrier Mounting Points.
Fork: SR Suntour XCT DS, Straight, 80mm travel.
Headset: ACROS AZF-1034, ICR.
Seatpost: CUBE Performance Post, 31.6mm.
Saddle: CUBE Kid.
Drivetrain & Brakes
Rear Derailleur: Shimano CUES RD-U4000-GS, 9-Speed.
Shifter: Shimano CUES SL-U4010-R, Rapidfire Plus.
Brakes: Shimano BR-MT200 Hydraulic Disc.
Rotors: Shimano Centerlock, 160mm Front / 180mm Rear.
Cassette: Shimano CUES CS-LG300, 11-46T, 9-Speed.
Crankset: ACID MTB Hybrid Pro with 38T Chainring.
Chain: KMC eGlide.
Wheels & Cockpit
Rims: ACID ZX20, 32H, Tubeless Ready.
Hubs: Shimano HB-QC300 QR (Front) / ACID Engineered by Newmen 12mm Boost (Rear).
Tires: Schwalbe Rocket Ron Kevlar, 24x2.1".
Handlebar: CUBE KIDS 590mm, Ø 19mm Grip Diameter.
Grips: Natural Fit Kids 19.0.
Pedals: CUBE PP MTB Medium.
Approx. Weight: 17.6 kg / 38.8 lbs (Max System Weight: 80 kg).
Key Highlights
Lightweight Bosch Performance SX Motor: Delivering 55Nm of torque, the SX drive unit provides natural, high-cadence pedaling assistance so young riders can scale steep hills without feeling overwhelmed by bike weight.
Integrated 400Wh CompactTube Battery: Fully enclosed in the downtube to preserve frame strength and lower the center of gravity, with support for an optional 250Wh PowerMore range extender.
Youth-Proportioned Ergonomics: Built with a slim 19mm grip and handlebar diameter paired with short-reach Shimano hydraulic disc brake levers for effortless, confident stopping power.
Wide-Range Shimano CUES 11-46T Gearing: A robust 9-speed setup with an expansive 46T low gear allows kids to spin efficiently up technical off-road climbs.
Cube Actionteam Factory Livery: Styled in signature Actionteam colors, combining pro-racer aesthetics with modern UDH frame compatibility and clean internal cable routing.