Acid 240
Origin
Cube is a German bike maker founded in 1993 by Marcus Puerner in Waldershof, Bavaria, starting in a corner of his father's furniture factory and growing into one of Europe's largest bike brands. The Acid name has long sat in Cube's hardtail line-up as the value-focused, do-everything cross-country trail bike, and the Acid 240 is the junior translation of that idea onto 24-inch wheels. Rather than a toy, Cube builds it from the same heat-treated 6061 aluminium used across its adult range and hangs real mountain-bike components on it - a suspension fork, indexed gears and, on the Disc line, hydraulic brakes - so a child moving up from a first pedal bike gets a scaled-down but genuine trail machine. It has been a fixture of Cube's kids catalogue for years, quietly updated season to season as component suppliers changed.
Specifications
- Frame
- Heat-treated 6061 aluminium (Cube 'Aluminium Lite 6061')
- Weight
- kg
- Drivetrain
- 1x, gears vary by year/trim: Shimano 7-speed (early/V-brake), microSHIFT Advent 9-speed (~2022-2023 Disc), Shimano Acera 8-speed (~2024-2025 Disc)
- Brakes
- Two lines: alloy V-brake with Powermodulator (value) OR hydraulic disc (Tektro HDM-282 / Shimano BR-MT200, 160/160mm)
- Wheels
- 24-inch, aluminium double-wall rims
The verdict
- Real adult-grade 6061 aluminium frame with proper MTB components (suspension fork, indexed gears, disc option) for the money.
- Disc versions brake reliably in the wet (Tektro/Shimano hydraulics) with child-friendly levers; comfortable upright all-round geometry.
- Durable and well-supported: replaceable derailleur hanger, standard parts, and strong resale value across the Baltic/European used market.
- Heavy for the class (~12-13 kg as weighed) - noticeably harder for a small child to lift, manoeuvre or carry up stairs than premium lightweight rivals (Woom, Frog).
- Coil suspension fork is under-sprung for light kids and adds weight without doing much for very light riders.
- All-round geometry limits it for serious jumps, drops and technical trails; it is a comfort-oriented trail bike, not an aggressive MTB.
Generations
2018-2021 (7-speed era)
- Original spec: simple, robust 7-speed. Disc versions already had hydraulic Tektro brakes.
- Brakes
- V-brake (value) or Tektro HDM-282 hydraulic disc
2022-2023 (Advent 9-speed era)
- Wider-range, more modern 9-speed 1x drivetrain on the Disc line; best gear range of the eras.
- Brakes
- Tektro hydraulic disc
2024-2025 (Acera 8-speed era)
- Switched to Shimano Acera 8-speed; V-brake base stayed on Shimano 7-speed. Prices trended down (~EUR 449-499 Disc).
- Brakes
- Shimano BR-MT200 hydraulic disc
Versions & builds
Every official build side by side — differences highlighted.
| Spec | CurrentAcid 240 (V-brake) | Acid 240 Disc (Tourney 7sp, early) | Acid 240 Disc (Advent 9sp) | CurrentAcid 240 Disc (Acera 8sp) | CurrentAcid 240 Disc FE (fully equipped) |
|---|---|---|---|---|---|
| Year | 2024 | 2020 | 2023 | 2025 | 2025 |
| Frame | 6061 aluminium | 6061 aluminium | 6061 aluminium | 6061 aluminium | 6061 aluminium |
| Drivetrain | Shimano 7-speed (RD-M310, Revoshift) | Shimano Tourney 7-speed | microSHIFT Advent 1x9-speed | Shimano Acera 1x8-speed | Shimano 8-speed |
| Brakes | Alloy V-brake w/ Powermodulator | Tektro HDM-282 hydraulic disc 160/160mm | Tektro hydraulic disc | Shimano BR-MT200 hydraulic disc | Hydraulic disc |
| MSRP | €399 | €549 | €599 | €499 | €599 |
| Purpose | Value | Balanced | Balanced | Balanced | Flagship |
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