+ 0% Finance Available + Over 20,000 Happy Riders + Next Day Delivery Available + Over 15 Years Experience + Worldwide Delivery + Over 700 E-Bikes In Stock + Best Support & Advice + Access To Spares

The new 2026 Cube electric bike range has just been launched! Check it out here 👉 Cube 2026

 

Cube Electric Bikes

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids

£1,999.00

Save up to £959.52 with Cycle To Work

Frame Size:

Out of stock - Unavailable to order.
×
Spread the cost with V12 Finance

Click 'Find out more' above to calculate costs. Then simply add the bike and any products you wish to the cart and proceed through the checkout, where you can apply online and the process is automated.

Learn more about ebike finance

Save with a Cycle To Work Scheme

We deal with all major cycle to work scheme providers. You can save up to 48.25% on the purchase of your new electric bike. We don't add on any hidden charges or fees (even on sale items).

Learn more about cycle to work

Fast Electric Bike Delivery

Fast electric bike delivery subsidised to just £4.99 (for mainland UK). We also deliver to Highlands & Islands as well as the rest of the world. Simply add to cart, the shipping cost is calculated at checkout.

Learn more about ebike shipping

Free 30 Day Insurance Cover

Every electric bike purchased from us benefits from free 30-day insurance cover from our partners at Bikmo. This covers both theft and damage. Simply opt for your free e-bike insurance cover at the cart.

Learn more about ebike insurance

Our E-Bike Price Match Promise

Seen a bike advertised for less elsewhere, but want to purchase with all the benefits of buying from the electric bike experts? We'll do our best to match the price on a like-for-like service and product.

Learn more and apply for price match

Arrange a Viewing in Store

Want to view your dream bike, or maybe you just need a little more information or support? Why not visit our HQ where we have over 150+ electric bikes on display and one of our e-bike experts can assist.

Book in to visit us and learn more

Description

Ignite your young rider’s sense of adventure with the 2026 Cube Acid 240 Hybrid Rookie Pro 400X – a kids’ e-MTB built for fun, confidence, and safe learning on trails. Its lightweight aluminium frame and kid-friendly geometry make handling easy, helping young riders gain control and ride with confidence.

Powered by the Bosch Performance SX 55Nm motor and a 400Wh battery, the Acid 240 Hybrid delivers smooth, reliable pedal assistance, giving children an extra boost on climbs and longer rides while teaching them the thrill of e-biking safely.

With suspension forks to absorb bumps, durable components, and reliable brakes, this bike keeps young riders safe and comfortable on a variety of terrain. The playful design, easy-to-use controls, and adjustable features ensure it grows with your child’s skills and confidence.

The Acid 240 Hybrid Rookie Pro 400X isn’t just a bike – it’s a fun, empowering way for kids to explore, learn, and love riding from the very first pedal.

Full product details
  • Our 5 point review...

  • 1

    Specially designed for kids, robust alloy frame

  • 2

    Up to 100 miles of range from the Bosch 400Wh CompactTube battery

  • 3

    9 Speed Shimano Cues Gearing

  • 4

    Punchy Bosch Performance SX 55Nm motor

  • 5

    Simple, easy to use Bosch Purion 200 control and display system

  • E-Bike Key Specs
  • Battery

    Bosch 400Wh

  • Display

    Bosch Purion 200

  • Motor

    Bosch SX

  • Range

    30-120 miles

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Why choose E-Bikeshop?

Features

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Bosch Performance SX Motor
Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Bosch Purion 200 Display

For your little rippers...

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X is specifically designed for young riders, combining safety, comfort, and fun. Its lightweight frame ensures easy handling and manoeuvrability, while child-friendly geometry provides a natural, upright riding position.

Sized appropriately for growing cyclists, it features easy-to-use controls, reliable brakes, and kid-focused components for confidence and safety. Durable tyres and a robust drivetrain withstand rough play, making it ideal for learning, exploring, and building cycling skills with minimal maintenance.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Suntour XCT DS 80mm Forks
Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Shimano MT200 Disc Brakes

Big kid toys, little bike..

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X delivers impressive performance without compromise, even for young riders. Its lightweight frame, responsive geometry, and carefully selected components ensure efficient pedalling, smooth handling, and reliable braking.

Despite being a kids’ e-bike, it features a robust drivetrain and high-quality tyres for traction and durability on varied terrain. Thoughtful engineering ensures that young cyclists experience the thrill, control, and confidence of a full-performance ride, making learning and exploring fun and safe.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Shimano Cues U4000 Rear Mech

Brakes & Gears

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X features Shimano MT200 hydraulic disc brakes, providing reliable, consistent stopping power for young riders. Dual-piston calipers ensure balanced, precise braking, giving children confidence and control on varied terrain. Pre-bled and low-maintenance, these brakes are easy to use and durable, ideal for active, growing riders.

Smooth, quiet operation and adjustable lever reach make them safe and accessible, delivering dependable performance for learning, commuting, and off-road fun.

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X features Shimano CUES 9-speed gears, designed for smooth, reliable, and easy-to-use shifting. Perfectly suited to young riders, the system allows effortless gear changes across varied terrain, helping children focus on riding rather than complex controls.

Durable and low-maintenance, these gears withstand frequent use while providing consistent performance. Ergonomic shifters make operation intuitive, delivering a dependable, fun, and safe cycling experience for kids learning, exploring, and developing their skills.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Shimano MT200 Disc Brakes

Shimano MT200 hydraulic brakes on kids’ e-bikes provide reliable, consistent stopping power with smooth, controlled lever feel. Durable, low-maintenance, and adjustable, they ensure safe, confident braking for young riders.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Shimano Cues U4000 Gears

Shimano 9-speed CUES hub gears offer smooth, reliable shifting, designed for low maintenance and ease of use. Intuitive and durable, they provide young riders with effortless, dependable gear changes.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Shimano Cues U4010 Shifter

Shimano 9-speed trigger shifters deliver precise, easy-to-use gear changes for young riders. Ergonomic and intuitive, they ensure smooth, reliable shifting, helping children ride confidently on varied terrain with minimal effort.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Schwalbe Rocket Ron Tyres

Wheels & Tyres

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X is equipped with Cube’s own ACID ZX20 wheelset, designed specifically for young riders. Lightweight and robust, these wheels provide excellent strength and stability, making handling easier and safer for children.

Precision bearings and durable construction ensure long-lasting performance with minimal maintenance, even on rough terrain. The ACID ZX20 wheels perfectly complement the bike’s frame geometry, offering a reliable, smooth, and confident ride for kids learning, exploring, and developing cycling skills.

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X features Schwalbe Rocket Ron tyres, designed for traction, control, and durability on varied terrain. Their lightweight construction allows easy handling and efficient pedalling for young riders, while reinforced sidewalls provide added protection against punctures.

The aggressive tread pattern ensures reliable grip on dirt trails, paths, and playground surfaces, helping children ride confidently. Together, these tyres deliver a safe, fun, and performance-oriented cycling experience tailored to growing riders.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Cube Kid Saddle on Performance Post

The bottom line..

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X delivers impressive performance tailored for young riders, combining smooth handling, responsive gearing, and reliable braking. Its lightweight frame and carefully selected components make pedalling easier, helping children tackle varied terrain with confidence.

With intuitive controls and low-maintenance systems, the bike allows kids to focus on learning and exploring, building skills and independence. By offering both fun and dependable performance, it encourages young cyclists to ride more, develop confidence, and enjoy every adventure.

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X is designed for ease of use and minimal maintenance, making it perfect for young riders. Intuitive controls, lightweight geometry, and smooth-shifting Shimano CUES 9-speed gears ensure effortless operation, helping children focus on riding and building confidence.

Durable components, including the suspension forks and ACID ZX20 wheels, require little upkeep, while robust tyres and brakes provide reliable performance. This low-maintenance design keeps running costs low and ensures worry-free, long-lasting enjoyment.

Power

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Bosch Performance SX Motor

Bosch Performance SX & Purion 200 eBike System

The 2026 Cube Acid 240 Hybrid Rookie Pro 400X is powered by the Bosch Performance Line SX motor, delivering 55 Nm of torque to provide smooth, responsive pedal assistance tailored for young riders. This ensures climbs, longer rides, and varied terrain are effortless, giving children confidence and control.

Its integrated Bosch 400 Wh CompactTube battery provides reliable, long-lasting power while maintaining a lightweight, well-balanced frame, allowing easy handling for smaller riders. The Purion 200 display offers clear, intuitive control over assistance levels and ride data, keeping essential information easily visible.

Full compatibility with the Bosch eBike Flow app adds smart features such as performance tracking, route planning, and firmware updates. Together, these technologies create a connected, safe, and dependable e-bike experience for kids learning, exploring, and enjoying every ride.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Bosch Purion 200 Display

The Bosch Purion 200 display is a compact, intuitive unit providing clear ride data and assistance levels. Lightweight and user-friendly, it integrates seamlessly with the Bosch eBike Flow app for enhanced functionality.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Bosch Performance Line SX Motor

The Bosch Performance Line SX motor delivers 55 Nm of torque, providing smooth, responsive pedal assistance. Compact and efficient, it helps young riders tackle climbs, varied terrain, and longer rides with confidence.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids Bosch CompactTube 400Wh Battery

The Bosch 400 Wh CompactTube battery provides reliable, long-lasting power for young riders while keeping the bike lightweight and well-balanced. It ensures extended range, easy charging, and hassle-free performance on every ride.

Cube Acid 240 Hybrid Rookie Pro 400X 2026 Kids What's Included?

What's included

Your new Cube electric bike gets a full set-up by our workshop technicians ahead of delivery.

Your Cube eBike will arrive with a user manual, keys (where applicable), charger & free follow up service (at our service center) within 3 months of delivery.

Cube electric bikes include a 6yr (Alloy) or 3yr (Carbon) warranty on the frame, 2yr warranty on all the electrics and 1yr warranty on the components. In the event of a problem, we handle all warranty claims via our dedicated support in-house.

E-Bikeshop is a Cube UK eBike Service Center and our in-house workshop is exclusively reserved for our own eBike customers. We have time to support the eBikes we sell.

Specifications

General Bike Specifications

Frame Cube Aluminium Superlight Alloy

Forks Suntour XCT DS, Straight, 80mm

Brakes Shimano BR-MT200, Hydr. Disc Brake (160/180)

Shifters Shimano Cues SL-U4010- Rapidfire-Plus

Rear Mech Shimano Cues RD-U4000-GS, 9-Speed

Cassette Shimano Cues CS-LG300, 11-46T

Chain KMC eGlide

Wheelset ACID ZX20, 32H, Tubeless Ready

Tyres Schwalbe Rocket Ron Kevlar, 2.1"

Handlebars CUBE KIDS 590mm, Ø 19mm

Stem CUBE Aluminium Lite

Headset ACROS AZF-1034, ICR

Seatpost CUBE Performance Post, 31.6mm

Saddle CUBE Kid

Weight 17.6 Kg

Electric Bike Specifications

Battery Bosch CompactTube 400Wh, with BMS Management

Display Bosch Purion 200 Display

Motor Bosch Drive Unit Performance SX 55Nm 250W

Range 30-120 miles of power assisted range, depending on terrain

Downloads

FAQs


Yes we offer a range of finance purchase options. These vary from 0% short term, right through to longer term loans on a % APR.


To see the estimated monthly installments on any bike, simply click the 'Find out more' button towards the top of this page. You can select the deposit amount and loan period to quickly calculate the monthly cost before proceeding to place your order.


Finance is automatically processed online at the checkout when selected, you can learn more on our dedicated E-Bike finance page.



You can see what sizes this model is available in at the top of this page. Sizes are listed in centimeters and also specified S, M, L etc.


Some models have more available sizes than others. Whilst some bikes are only available in a 'one size fits all'.



Next to the size options at the top of this page, click 'Find my size'. Enter your inside leg measurement along with your arm length and height (in cm). Our special size calculator will show you what size you need to order. These are displayed in S, M & L etc to correspond with the size options.


Note: You may be a particular size on one model and a different size on another model. Please use the size calculator on each model page as sizes can vary between manufacturers and models.



You can view the stock status of any model/variant by selecting it at the top of this page. It will show you one of three stock status:


In Stock: In stock now and available to order for immediate delivery
Pre-Order: Available to pre-order with estimated date of arrival shown
Sold Out / Out of Stock: The model is completely sold out in this variant and no longer available to order


If this bike is showing as Out of Stock in your size, it's worth checking if there's colour options as the same model and size may be available in a different colour. Failing that, we also offer a handy link to 'View similar bikes in this size'.



Yes, you may wish to collect your new electric bike from our HQ based in Farnham, Surrey. If so please select 'Collect in store' at the checkout.


We will then prepare your new eBike and be in touch to book a suitable collection day/time.


One of our experts is on hand to help you set up the correct position on your new eBike along with answering any questions that you may have.



If colour options are available, these will show below the size options at the top of this page. It's best to choose your size first and then click on each colour option to check it's availability in that size.


Not all of our electric bikes have colour options available.



At e-bikeshop we work by appointment only, so we can talk to each customer on an individual basis to give the best advice possible.


We can talk you through your requirements, riding style and offer expert advice as to which model to select.


We generally keep over 150 eBikes built in our showroom. Note: Some models shown as 'Pre-Order' may not be in the showroom to view as the bike is still due from the supplier. We can also give you the opportunity to ride a similar electric bike so you can get a feel for how electric bikes work prior to purchase.
 
Should you wish to purchase, we give the option to take it away that same day (subject to stock) with any extras fitted and a handover session on the bike itself by one of our eBike experts.



Delivery for UK 'In Stock' items ordered before 1pm should be expected for delivery the next business day (this excludes weekends and public holidays).


You can learn more on our E-Bike delivery page. International buyers can view international delivery times.


For delivery on 'Pre-Order' items, the estimated arrival date is shown at the point of order. On arrival our team will make contact to settle any outstanding balance. Once settled in full, we'll then proceed to dispatch your new eBike without delay.



Yes, we exclusively offer 30 days free insurance on all of our new electric bike purchases. This is for UK orders only. Simply select to opt-in to the 30 days free insurance in the cart.


This not only covers for theft, but also covers you for public liability, breakdown, accessories, accidental damage and returning home cover. You can learn more on the dedicated electric bike insurance page.


E&OE