Cube Acid 240 Hybrid Rookie SL400 Junior Electric Mountain Bike 2021 - Blue

Cube Acid 240 Hybrid Rookie SL400 Junior Electric Mountain Bike 2021 - Blue 4054571324412 - Start Fitness

Cube Acid 240 Hybrid Rookie SL400 Junior Electric Mountain Bike 2021 - Blue

  • UK Delivery: 5-7 working days*

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    Kids aren't daft, and there comes a time when they'll want a bike as good as mum and dad's.

    With the Acid 240 Hybrid Rookie SL, now they can. It features the same Bosch drive unit and battery as many of our adult hybrids, so your young rider has the power boost they need to ride further, faster and longer - good news for family outings.

    The Suntour air fork is easily adjustable to suit smaller, lighter riders - we even used a thinner handlebar and grips for better comfort and control with small hands.

    Shimano's 10-speed gears are super reliable and offer a great range, and powerful hydraulic disc brakes safely rein in any excess enthusiasm. It's good to go.


    • HPA, High Performance Aluminium Frame
    • SR Suntour XCR LO Air JR, 80mm
    • Bosch Drive Unit Active GEN3 (40Nm)
    • PowerPack 400 Battery
    • Magura MT Thirty Hydraulic Brakes
    • Shimano Deore, 11-42T, 1x10


    Product Code 43006024
    Brand Cube
    Gender Junior
    Model Year 2021
    Frame Aluminium Superlite, Gravity Casting, Agile Ride Geometry, Double Butted, Disc Only, Internal Cable Routing
    Fork SR Suntour XCR LO Air JR, 80mm
    Shifters Shimano Deore SL-M4100R, Rapidfire-Plus
    Derailleur (Rear) Shimano Deore RD-M4120-SGS, 10-Speed
    Brakes Magura MT Thirty, Front 2-Piston/Rear 2-Piston, Hydr. Disc Brake (180/160)
    Crankset ACID E-Crank, 38T, 160mm
    Cassette Shimano Deore CS-M4100, 11-42T
    Chain KMC X10
    Hub Front Shimano HB-M525, QR, 6-Bolt
    Hub Rear Shimano FH-M525, QR, 6-Bolt
    Rims CUBE ZX20, 32H, Disc, Tubeless Ready
    Tyres Schwalbe Smart Sam, Kevlar, 2.35
    Handlebar AR CUBE Aluminium, 580mm, 25.4
    Stem AR CUBE Aluminium Lite
    Headset CUBE FPH863, Semi-Integrated
    Saddle CUBE Kid
    Seatpost CUBE Performance Post, 30.9mm
    Pedal CUBE PP MTB
    Wheel Size 24 inch
    Number of Gears 10
    Motor Bosch Drive Unit Active Generation 3 (40Nm) Cruise (250Watt) Youth Edition (20km/h) w/ Bosch Purion
    Battery Bosch PowerPack 400

    Ready to ride

    Every bike from Start Fitness is fully checked & assembled before despatch and will arrive, almost, ready to ride. Each bike is assembled by one of our CyTech accredited mechanics and then packed into one of our custom boxes.
    This process has a lead time of 5-7 working days. Unfortunately during peak times this may be slightly delayed. We will however, aim to despatch your bike as quickly as possible. Minimal assembly, with basic tools, is required before you can ride. Assembly tools are not usually included. Please note: Some bikes are not supplied with pedals. Manufacturers don’t know if you want flat or clipless pedals - rather than send the bike with the wrong type, they leave the choice for you to make.

    Making sure you are home

    Once fully checked and boxed, we will contact you to book a delivery date. Our bikes are despatched on a next working day service (excludes weekends & bank holidays) for UK mainland orders, or a two day service to Northern Ireland and outlying Scottish areas. European bike deliveries usually take approximately one week.  

    Taking Delivery

    Any mechanical or cosmetic issues need to be reported to us within one week of the delivery date. If you do not plan on using the bike straight away, we advise that you remove it from the box and check it over ASAP as we cannot be responsible for any reported issues (other than standard warranty issues) later than one week from the date that the bicycle was delivered.  

    First Service

    After a few weeks of riding (we recommend around 6-8 weeks, regardless of how much the bike has been used), a new bike will need a service to make final adjustments and to re-check all nuts and bolts. This is necessary as the bike goes through a ‘bedding in’ phase, after which, final adjustment may be necessary. We recommend that this is carried out by a CyTech qualified mechanic.

    It is important to have these checks carried out to prevent any avoidable problems which may not be covered by warranty and to ensure the smooth running of your bicycle. If you’re local to us, we’re able to offer this first service free of charge* at our Newcastle store (NE1 6JE). You’ll just need to call our workshop on 0191 917 3825 to book your service in, and don’t forget to bring your proof of purchase when you drop the bike off with us.

    If you’ve had the bike delivered, it will be your responsibility to ensure a first service is carried out at a trusted bike shop local to you, preferably by a Cytech certified mechanic. Start Fitness are unfortunately not able to cover any costs associated with this service if carried out by another store.

    *Please note that this complimentary check-over does not include any labour to replace worn parts or to fit new accessories. All bikes should be delivered to us in a clean and serviceable condition, or a £15 cleaning charge will be payable.  

    Bike Servicing

    Bicycles need to be serviced regularly, as a guideline we would advise on at least one full service per year and/or a standard service twice a year. If the bike is used regularly in adverse conditions, more regular servicing may be required.

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