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Mountain & Fat-Tire

Cube Reaction Hybrid

★★★★★ 4.6/5 · 814 reviewsby by Cube
9.2OUT OF 10
The SpokeVolt verdict

The Cube Reaction Hybrid is a well-rounded electric hardtail mountain bike that blends Bosch's proven motor system with capable trail geometry, making it a strong choice for riders who want extra assistance on climbs without sacrificing off-road performance. While its weight and hardtail-only design may not suit aggressive downhill riders, it remains an excellent all-rounder for trail exploration and daily adventure riding.

Key Features

Full Specifications

MotorBosch Performance Line CX, 85Nm torque
Battery625Wh integrated lithium-ion
SuspensionRockShox Recon, 120mm travel
BrakesShimano hydraulic disc, 180mm rotors
Weight22.5 kg (approx.)

What we liked

  • Powerful, natural-feeling motor assistance up to 25 km/h
  • Confidence-inspiring geometry for technical trails
  • Long battery range suitable for all-day rides
  • Solid build quality with reliable component spec
  • Removable battery for easy charging indoors

Worth noting

  • Heavier than non-electric mountain bikes, affecting handling when unpowered
  • Hardtail only design limits comfort on rough descents
  • Higher price point compared to standard MTBs
  • Motor cutoff at 25 km/h in EU-spec models

The Full Review

The Cube Reaction Hybrid stands as one of the most versatile electric mountain bikes on the market, blending the agility of a cross-country hardtail with the confidence-inspiring assistance of a Bosch drive system. Built around Cube's lightweight aluminum frame, the bike is engineered to handle everything from daily commutes to demanding singletrack trails, offering riders a responsive, trail-ready platform without sacrificing the natural feel of pedaling. The geometry is tuned for control and stability, giving riders the confidence to tackle technical terrain while still feeling nimble enough for quick urban rides or fitness-focused outings. At the heart of the Reaction Hybrid lies a powerful and efficient Bosch motor, paired with a high-capacity battery that delivers ample range for extended rides, whether you're climbing steep fire roads or navigating rolling countryside.

The intuitive Bosch Purion or Kiox display system allows riders to monitor speed, battery life, and assistance levels in real time, ensuring a seamless and customizable riding experience. Combined with a reliable suspension fork—often from RockShox or a comparable brand—the bike smooths out rough terrain, absorbing impacts from rocks, roots, and uneven trails, making it equally capable on rugged mountain paths and daily errands around town. Beyond its performance capabilities, the Cube Reaction Hybrid emphasizes durability and rider comfort, incorporating hydraulic disc brakes for reliable stopping power in all conditions and a wide-range drivetrain that adapts to varying terrain and rider preference. Its versatile design caters to outdoor enthusiasts, commuters, and fitness riders alike, providing an electric mountain bike that doesn't compromise between power, control, and everyday practicality. Whether tackling steep ascents, navigating city streets, or exploring off-road trails, the Cube Reaction Hybrid delivers a dependable, exhilarating ride that redefines what an electric mountain bike can achieve.

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