Acid 240 Hybrid Rookie SLX 400X / reedgreen'n'matrix

The Acid 240 Hybrid Rookie SLX 400X in Reedgreen ’n’ Matrix brings adult-tier e-MTB technology down to junior dimensions without making a single compromise. Dressed in an earthy, outdoor-ready "Reedgreen" finish with crisp "Matrix" graphics, this 24-inch hardtail is designed to help young trail shredders keep up on big family mountain epics.

At the heart of the bike is the lightweight Bosch Performance Line SX motor paired with an integrated 400Wh CompactTube battery. Delivering up to 55Nm of torque with support capped at a safe 20 km/h, it gives young legs natural, energetic assist on steep fire-road climbs. Every contact point is engineered specifically for smaller bodies—featuring slim 19mm-diameter handlebars, short-reach adjustable Magura MT Thirty hydraulic brakes, an easily tunable SR Suntour Raidon34 air suspension fork, and even a factory-installed dropper seatpost for confidence on technical descents.

Specifications Breakdown

E-Drive System

• Motor: Bosch Performance Line SX, Smart System, 55Nm Torque (assisted speed capped at 20 km/h).

• Battery: Bosch CompactTube 400Wh (Fixed integrated).

• Display/Controller: Bosch Purion 200 with integrated display & remote.

• Range Extension: Fully compatible with optional Bosch PowerMore 250Wh range extender.

Frameset & Suspension

• Frame: Aluminium Superlite, Agile Ride Geometry, Boost 148, UDH, Advanced Internal Cable Routing, Kickstand/Fender Mounts.

• Fork: SR Suntour Raidon34 2CR Air, Tapered, 15x110mm Boost, 80mm travel.

• Seatpost: CUBE Dropper Post, Handlebar Lever, Internal Cable Routing, 31.6mm.

• Headset: Acros Integrated Cable Routing (ICR).

Drivetrain & Brakes

• Rear Derailleur: Shimano CUES RD-U6000-GS, 11-Speed.

• Shifters: Shimano CUES SL-U6000, Rapidfire-Plus.

• Brakes: Magura MT Thirty Hydraulic Disc (4-piston front / 2-piston rear, short-reach adjustable levers).

• Rotors: 180mm Front / 160mm Rear.

• Cassette: Shimano CUES CS-LG400, 11-50T (LinkGlide).

• Crankset: ACID MTB Hybrid Pro, 38T.

Wheels & Cockpit

• Wheelset: ACID SLX 20, 32H, Tubeless Ready (15x110mm Front / 12x148mm Rear).

• Tires: Schwalbe Hans Dampf Addix Performance, Kevlar, 24x2.35".

• Handlebar: CUBE KIDS 590mm, specialized 19mm grip diameter.

• Grips: Natural Fit Kids 19.0.

• Approx. Weight: 18.2 kg / 40.1 lbs.

Key Highlights

• Bosch SX Lightweight Assist: Unlike heavy full-power adult e-bike motors that can overpower a light rider, the compact Bosch SX unit delivers smooth, cadence-sensitive power. It feels like natural pedal power, giving kids a boost on climbs without compromising agile handling.

• True Youth Ergonomics: Standard 22.2mm handlebars can cause hand fatigue for small fingers. Cube spec'd a custom 19mm handlebar and grip system, combined with Magura brake levers that pull in close to the bar so kids maintain full control at all times.

• Raidon34 Air Suspension: Air forks are essential for youth mountain bikes because coil springs are usually too stiff for lightweight riders. The 80mm Raidon34 air fork can be pumped precisely to match the child's exact weight for plush, active dampening.

• Integrated Dropper Post: Lowering the saddle at the push of a thumb lever lets young riders drop their center of gravity instantly when rolling into steep or tricky off-road descents.

• Heavy-Duty Trail Rubber: High-volume 2.35" Schwalbe Hans Dampf tires provide real aggressive-trail traction, soaking up chatter and offering massive grip across loose dirt, wet roots, and rocks.