The Reaction 240 Pro is made from the same kind of heat-treated 6061 aluminium tubes that you'll find in our performance adult bikes. We also use the same mechanical tube-forming process to adjust tube shapes for the best combination of strength and weight, and tyre clearance. There's a full carbon fork with thru axle, to save even more weight. Disc brake mounts and cable routing allow for the greater safety and stopping power of discs. And a replaceable derailleur hanger insures against expensive repairs in the event of minor mishaps


  • frame Aluminium Lite 6061, Smooth Welded Head Tube
  • size 24"
  • fork CUBE Kids Carbon, 1 1/8", Internal Cable Routing, Flat Mount Disc, 12x100mm
  • brake system Tektro HD-M275, Hydr. Disc Brake (140/140)
  • rear derailleur Microshift Advent RD-M6195M, 9-Speed
  • shifters Microshift SL-M8195, Xpress Shifter
  • bottom bracket Token, 68mm BSA
  • crankset CUBE Crankset, 32T, 152mm, with Chainguard
  • cassette Microshift CS-H093, 11-42T
  • chain KMC X9
  • wheelset Newmen Evolution A.25, 24/24 Spokes, Tubeless Ready
  • tyres Schwalbe Rocket Ron Kevlar, 2.1
  • Stem AR CUBE Aluminium Lite
  • handlebar AR CUBE Aluminium, 580mm, 25.4
  • grips Natural Fit Kids Grip, Ø 19mm
  • seat post CUBE Aluminium Lite, 27.2mm
  • seatclamp CUBE Varoclose, 31.8mm
  • saddle CUBE Kid
  • headset CUBE A-Headset
  • weight 8,8 kg
  • colour teamline
  • Art. No 523290
  • Price

*Suggested retail price

Because of the problems in the delivery chain arising from the current COVID-19 situation, the bike can be delivered with modifications.

Add to watchlist


Your browser doesn't support SVG
  • INFO
  • 24"
Seat Tube
Top Tube Horizontal
Seat Tube Angle
Head Tube Angle
Chain Stays
Head Tube
BB-Height to Hub
Standover Height

Find your size


NB: Measure without your shoes!

Cube Reaction 240 Pro teamline

Please be aware that information provided here regarding the correct frame size is a recommendation only. For the best results, please visit your local dealer for a personal consultation and test ride. Find your nearest CUBE dealer for a test ride in your size:

Find dealer


This children's bike is a OneSize model suitable for kids up to the following maximum measurements:

Height: 118 - 136 cm
Inside leg: 52 - 63 cm

Please note this information is only a general recommendation. It cannot replace a personal consultation and test ride with a CUBE dealer.

Bike classification category: 0

Maximum weight limit:

80 kg

Maximum system weight

The maximum system weight refers to the maximum combined weight of the rider and bike. Please refer to the table for information on the distribution of weight across the system in conjunction with compatible mounted parts (luggage carriers etc.).

System weight table

Light, fast, tough, fun - just like the little mountain biker in your life. The Reaction 240 Pro has everything they need to explore their limits, and nothing they don't. The full carbon fork with thru axle is light and comfortable. Wide-ranging Microshift 1x9 gears have the range to tackle any trail. Powerful disc brakes with Schwalbe tyres and Newmen rims - just like on our full-size mountain bikes - are extra reassuring. And contact points designed for junior proportions ensure that your young rider is comfortable and in full control, all the time. 

Bike details

More models of this series

Suitable accessories