Monday | 9.00am - 5.30pm |
Tuesday | 9.00am - 5.30pm |
Wednesday | 9.00am - 5.30pm |
Thursday | 9.00am - 5.30pm |
Friday | 9.00am - 5.30pm |
Saturday | 9.00am - 5.30pm |
Sunday | 10.00am - 4.00pm |
Bank Holidays | 10.00am - 5.00pm |

2025 Cube Acid 240 Kids Bike in Purple
The ACID 240 is the ideal choice for growing riders who want to keep up with their friends and parents. The Suntour suspension fork improves comfort and control on rough surfaces, while Shimano 7-speed gears put every hill within reach. The V-brakes are powerful and easy to control, thanks to levers that are specially designed for small hands. And a replaceable gear hanger means an accidental knock needn't result in an expensive repair. Go. Explore.
Built from the same heat-treated 6061 aluminium tubes as our adult bikes, the ACID 240's frame is every bit as tough as a full-size mountain bike, but with the right weight and proportions for a child. There's a bottle mount for mid-ride refreshment and rack mounts, too. The handling is designed to be both fun and confidence-inspiring. And, because we know accidents can happen, we made the gear hanger easily replaceable so that a knock or crash needn't result in an expensive repair.
All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £25 delivery fee.
Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.
Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.
Find Out More About Returns >

Frame - Aluminium Lite 6061
Fork - SR Suntour SF15, 60mm
Headset - CUBE FPH863, Semi-Integrated
Stem - CUBE Aluminium Lite
Handlebar - CUBE Aluminium Lite, 580mm
Grips - ACID Kids
Rear derailleur - Shimano RD-M310, 7-Speed
Shifters - Shimano SL-RS45, Revo Shift
Brake - CUBE Alloy V-Brake
Bottom Bracket - Thun PASO-ML BSA
Crankset - ACID 32T, 127mm with Chainguard
Crankset chainring sizes - 32T
Cassette - Sunrace MFM300.7, 13-34T
Number of gears - 7
Chain - KMC Z8.3
Rims - CUBE MT19
Front hub - CUBE Aluminium, QR, 28H
Rear hub - CUBE Aluminium, QR, 28H
Tires - Meghna, 2.1
Pedals - CUBE PP MTB
Saddle - CUBE Kid
Seatpost - CUBE Aluminium Lite
Dropper Seatpost - NO
Seatpost clamp - CUBE Varioclose, 31.8mm
Bell - ACID
Net weight (kg) - 11.4
Gross weight (kg) - 11.4