Cube Reaction SLX MY25 Mountain Bike

Information

The 2025 model in Slateblack/Black combines a lightweight aluminium frame with top-tier components, making it ideal for cross-country and trail riders seeking a reliable and efficient ride.

Built around an Aluminium Lite frame with double-butted tubing, the Reaction SLX offers internal cable routing, a tapered head tube, and clean integration points such as flat mount brakes and a SIC mount. The RockShox Judy Silver TK Air fork provides 100 mm of smooth suspension travel, balancing comfort and efficiency on rough terrain.

Equipped with a Shimano XT 1x12-speed drivetrain, this bike delivers precise, smooth shifting with a wide gear range. The setup includes a Shimano XT rear derailleur, XT shifter, and a Shimano FC-MT611 crankset (32T) paired with a 10-51T cassette. Braking is handled by powerful Shimano XT hydraulic disc brakes with 180/160 mm rotors for reliable stopping performance in all conditions.

The Cube EX25 tubeless-ready rims are paired with Schwalbe Racing Ralph Addix Performance tyres (29x2.25") for excellent grip and rolling speed. The frame accommodates a maximum tyre width of 57 mm. At approximately 13.3 kg, the Reaction SLX offers a solid balance between strength and low weight.

For the XL (55 cm) size, the bike is suited for riders between 185 and 193 cm in height. The geometry provides a confident yet agile ride, with a 515 mm seat tube, 635 mm top tube, 441 mm reach, and 656 mm stack. The 29-inch wheels on the XL frame size enhance stability and momentum, making it ideal for longer rides and mixed terrain.

This model is perfect for riders who value efficiency, precision, and high-quality components in a lightweight hardtail package. It performs exceptionally well on fast trails, climbs efficiently, and remains responsive and composed on technical sections. A dropper post can be added for more versatility on steep terrain, as the frame is compatible.

SPECIFICATION

Frame: Aluminium Lite, AMF, double-butted tubing, internal cable routing, tapered head tube, flat mount brake, SIC mount, kickstand mount
Fork: RockShox Judy Silver TK Air, 100 mm travel
Wheel Size: 29" (for XL frame)
Brakes: Shimano XT BR-M8100 hydraulic disc brakes, 180 mm front / 160 mm rear rotors
Rear Derailleur: Shimano XT RD-M8100-SGS, 12-speed
Shifter: Shimano XT SL-M8100-IR
Crankset: Shimano FC-MT611, 32T
Cassette: Shimano CS-M6100, 10-51T
Chain: KMC X12
Rims: Cube EX25, 32H, tubeless-ready
Tyres: Schwalbe Racing Ralph Addix Performance, 29x2.25"
Handlebar: Cube Rise Trail Bar, 720 mm
Stem: Cube Performance Stem Pro, 31.8 mm
Seatpost: Cube Performance Post, 27.2 mm
Saddle: Natural Fit Venec
Headset: ACROS AZF-1035
Weight: Approx. 13.3 kg
Colour: Slateblack/Black
EAN: 4054571472847
Model Year: 2025
Size: XL (55 cm) – recommended for height 185–193 cm

KEY FEATURES

• Lightweight and durable aluminium frame with internal cable routing

• RockShox Judy Silver TK Air fork with 100 mm travel for smooth control

• Shimano XT 1x12 drivetrain for precise, reliable shifting

• Powerful Shimano XT hydraulic disc brakes for confident braking

• 29" wheels for excellent stability and rolling efficiency

• Schwalbe Racing Ralph tyres for strong grip and low rolling resistance

• Tubeless-ready wheelset for enhanced performance and puncture protection

• Dropper post compatibility for enhanced off-road versatility

• Balanced XC/trail geometry providing efficient climbing and stable descending

• Ideal for cross-country, trail riding, and endurance mountain biking