Cube Acid 240 Disc 2025 - Junior Bike

The Acid 240 Disc features a lightweight aluminium frame, 60mm SR Suntour suspension fork, and easy-to-use Shimano 8-speed gearing. It’s built to handle rugged terrain while keeping your young rider safe and comfortable. Perfect for family rides or exploring trails with friends, this bike is packed with features to inspire confidence.
Key Features:
- Lightweight 6061 aluminium frame for easy handling and durability
- SR Suntour SF20 XCT JR suspension fork with 60mm of travel for trail-smoothing comfort
- Shimano 8-speed drivetrain for smooth and reliable shifting
- Shimano hydraulic disc brakes for strong and reliable stopping power
- 24" wheels with 2.1" Meghna tyres for great grip on varied terrain
- Components designed to fit young riders perfectly
- Available with 0% APR finance
Built to the same standards as Cube’s adult mountain bikes, the Acid 240 Disc gives young riders the tools they need to hit the trails confidently. The aluminium frame is tough and lightweight, with disc mounts to support the powerful hydraulic brakes. The Suntour suspension fork smooths out bumps, offering improved control and comfort on rough trails.
The 8-speed Shimano drivetrain is easy for kids to use, providing a wide gear range for tackling any terrain. The hydraulic disc brakes deliver reliable stopping power, ensuring your child has control, even on steep descents. With 24" wheels and grippy 2.1" tyres, this bike handles everything from dirt paths to technical trails.
Designed with safety and fun in mind, the Cube Acid 240 Disc includes a replaceable derailleur hanger, so minor accidents won’t lead to costly repairs. Whether it's a family ride in the woods or an afternoon of exploring, this junior mountain bike is ready for the challenge.
Occasionally, without notice, manufacturers change product design and/or specifications.
Frame | Aluminium Lite 6061 |
Fork | SR Suntour SF20 XCT JR, 60mm |
Headset | CUBE FPH863, Semi-Integrated |
Stem | Cube Aluminium Lite |
Bars | CUBE Aluminium Lite, 580mm |
Front Brake | Shimano BR-MT200, Hydr. Disc Brake (160/160) |
Rear Brake | Shimano BR-MT200, Hydr. Disc Brake (160/160) |
Rear Mech | Shimano RD-M3020, 8-Speed |
Shifters | Shimano SL-M315, Rapidfire-Plus |
Speed | 8 |
Rims | CUBE DB29 |
Front Hub | CUBE Aluminium Disc 6-Bolt, 28H |
Rear Hub | CUBE Aluminium Disc 6-Bolt, 28H |
Front Tyre | Meghna, 2.1 |
Rear Tyre | Meghna, 2.1 |
Seat Post | Cube Aluminium Lite |
Saddle | Cube Kid |
Chainset | ACID 32T, 127mm with Chainguard |
Bottom Bracket | Thun PASO-ML BSA |
Chain | KMC Z8.3 |
Cassette | Sunrace CSM55,11-34 |
Pedals | CUBE PP MTB |
Junior Bike Size Chart
Approx. Age |
Height (cm) |
Type / Wheel Size |
1 - 4 |
77 – 105cm |
Balance |
2 - 4 |
85 – 105cm |
12" |
4 - 6 |
105 – 117cm |
14" |
5 - 7 |
112 – 125cm |
16” |
6 - 8 |
117 – 132cm |
18” |
7 - 10 |
125 – 136cm |
20” |
10+ |
136+cm |
24” |
Read our kids bike size guide for more information on kids bike sizing.
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