REACTION 240
PRO

SRP* 899 CHF

ArtNo. 1152400

prizmpolished´n´red

available from December 2026

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JUNIOR
RACER

The Reaction 240 is made from the same kind of heat-treated 6061 aluminium tubes that you'll find on 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, as well as 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 Material Aluminium Lite

Wheels 24''

Expected to be available from 12 26

Details

Your aspiring mountain biker is off to a great start with the Reaction 240 Pro. Built with the same attention to detail that we lavish on our own team riders' bikes, its light and lively performance is sure to inspire adventures, build their confidence, and have them coming back for more.

Details

Your aspiring mountain biker is off to a great start with the Reaction 240 Pro. Built with the same attention to detail that we lavish on our own team riders' bikes, its light and lively performance is sure to inspire adventures, build their confidence, and have them coming back for more.

REACTION 240

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 Advent 1x9 gears have the range to tackle any trail. Powerful disc brakes with Schwalbe tyres mounted on wheels with Newmen rims – very similar to our full-size mountain bikes – are extra reassuring. And contact points like saddle, handlebars and grips designed for junior proportions ensure that your young rider is comfortable and in full control, all the time.

Frame

frame

Aluminium Lite 6061

There's aluminium, and then there's CUBE Aluminium Lite. This heat-treated 6061 aluminium is stiff, fatigue-resistant and, because of its natural corrosion resistance, a great material from which to make lightweight tube sets – and bicycle frames. And it does all this without adding unnecessary weight, so you can get the best enjoyment out of your CUBE.

Cables connect your handlebar controls to vital components like gears and brakes, but there's no need for them to get in your way. With Internal Cable Routing we've reduced clutter and maintenance by running cables through the frame, keeping them out of the way of dust and water contamination – or damage from abrasion – as well as cleaning up your bike's appearance.

For off-road riding you need a bike that responds quickly, but also feels stable and secure. That's where Agile Ride Geometry comes in. Offering an ideal blend of on-demand steering precision, climbing agility and descending stability, it's perfect for every rider who values their time on the trail. If you're a mountain biker, you'll instantly feel at home...

One standard for all: gear hanger replacement made easy thanks to the innovative Universal Derailleur Hanger. With a design that includes some room for pivoting to help prevent chain jams, it improves shifting performance and works with all drivetrains. Best of all, it's a standard part that is available anywhere.

size

24"

Rigid fork

CUBE Kids Carbon, 1 1/8", Internal Cable Routing, Flat Mount Disc, 12x100mm

Drivetrain & brakes

brake system

Tektro HD-M275, Hydr. Disc Brake (160/160)

rear derailleur

Microshift Advent RD-M6195M, 9-Speed

shifters

Microshift Advent SL-M9295-R

bottom bracket

Prowheel BSA PW-MB68

crankset

ACID AR SLT, 30T, 130mm

cassette

Microshift CS-H093, 11-42T

chain

KMC X9

Cockpit

headset

CUBE A-Headset

Stem

CUBE Aluminium Lite

handlebar

CUBE Kids 590mm, Ø 19mm

grips

ACID Nuro Rookie 19.0

Wheels

wheelset

Newmen Evolution X.A.25, 24/24 Spokes, Tubeless Ready

tyres

Schwalbe Rocket Ron Kevlar, 2.1

Finishing kit

saddle

CUBE Kids

seat post

CUBE Performance Post, 27.2mm

pedals

CUBE PP MTB

Product information

colour

prizmpolished´n´red

weight

9,0 kg

Art. No

1152400

SRP*

899 CHF

*Suggested retail price

Due to unforeseeable supply chain issues, the bike may be delivered with modifications.

More Information

Bike category of use: 2Y

You can find more information about Bike Classification at the following link.

More Information

65
kg

Maximum rider weight

The rider weight refers to the weight of the rider including clothing and any equipment worn on the body.

Please see the table for information on the distribution of weight across the system in conjunction with compatible accessories (luggage carriers, bike trailers, etc.).

System weight table

This children's bike is a OneSize model suitable for kids up to the following maximum measurements:
HEIGHT: 118-136
INSEAM: 52-63
Please note this information is only a general recommendation. It cannot replace a personal consultation and test ride with a CUBE dealer.

Geometry

	24"
Seat tube	309
Top Tube Horizontal	512
Seat angle	72.4°
Head tube angle	72°
Chainstays	426
Head tube	108
Wheelbase	969
BB-Height to Hub	40
Protrusion height - 80mm	647
Reach	349
Stack	534