Cube REACTION HYBRID PRO 800 FE

Uncompromising autonomy. The Bosch PowerTube 800 Wh is the battery that frees cyclists from the constraint of mileage. With 800 Wh of capacity, it pushes the limits of every outing — whether it's a long commute, a weekend getaway or a multi-day wilderness adventure. Integrated directly into the frame tube, the PowerTube disappears into the silhouette of the bike for a clean aesthetic and optimal protection against shocks and bad weather. Light for its capacity, it recharges quickly and pairs perfectly with all Bosch Smart System motors for intelligent energy management in real time.

The trail reference. The Shimano XT RD-M8100-SGS rear derailleur is the culmination of decades of Shimano expertise applied to the most demanding terrain. Robust, precise and remarkably quiet, it stands out as the natural choice for riders who make no compromise on the quality of their transmission. ShadowPlus technology reduces chain oscillation on bumpy terrain thanks to an adjustable friction system on the tread — less noise, less chain skipping, more concentration on riding. The SGS (Super Extra Long) version offers the maximum yoke capacity to absorb the entire development range of the widest 12-speed cassettes, up to 51 teeth.

Braking power where it actually matters: on a heavy, loaded bike, heading downhill. The Shimano BR-MT420 is a four-piston hydraulic disc brake caliper, fitted here with 203 mm rotors front and rear — the largest size in Shimano's mountain bike range. Four pistons instead of two means a larger pad surface and better-distributed pressure: around 20% more power than the two-piston version, and above all power that doesn't fade after three corners. On an electric mountain bike weighing 25 kg before the rider even gets on, that is not a luxury. The aluminium alloy body sheds heat, and the mineral oil circuit keeps a consistent bite point in the rain, in mud, or after a long descent. The D03S resin pads supplied as standard deliver progressive, quiet braking; they can be swapped for metallic D02S pads for greater heat resistance and better wet-weather performance — both share the same shape. The post-mount fitting is standard, so servicing can be done by any bike shop and spare parts are available everywhere.