Atala Whistle B-Rush A5.1 Aluminum

Pedal to the top and quickly attack the most technical descents at top speed

Atala's e-Enduros are built for racing, but thanks to their robust suspension, they are agile and fun on trails close to home as well. When it comes to electrical components, Whistle benefits from a partnership with the world's best manufacturer of electrical kits: Bosch. The eBike stimulates the propensity to move and is one of the most sustainable and healthy means of transport of our time. Bosch offers innovative systems, the Intelligent System, the new generation of Bosch eBike Systems, which are always connected and regularly updated. Daring is therefore the keyword for Atala: proposing innovations, breaking the mould, while respecting its strong tradition.


  • Frame: Alu, 29 , hydroformed, integrated battery, tapered, Rear travel 150 mm, 12x148 mm.
  • Fork: Suntour XCM34, 130 mm, 15x110 mm, Coil, Tapered, Lockout o RST Vibe, 29”, 140 mm, Coil, 15x110 mm, Tapered, Lockout.
  • Rear shock: Suntour Raidon, 230x65 mm.
  • Headset: FSA No.57B tapered 1"1/2.
  • Crankset: FSA, 34T.
  • Rear derailleur: Shimano Deore RD-M5120, Shadow Plus.
  • Shifters leavers: Shimano Deore SL-M4100 Rapidfire-Plus, 10s.
  • Brakes: Shimano BR-MT200, Rotor SM-RT10 180 mm/180 mm.
  • Cassette: Shimano CS-M4100 10s 11/46.
  • Pedals: Alu MTB Full.
  • Front hub: Shimano Alivio MT400, 15x110, CL, 32h.
  • Rear hub: Shimano Alivio MT400, 15x110, CL, 32h.
  • Rims: Radiale X25, 25x622, eBike ready, Asymmetric .
  • Stem: Alu Oversize, 35 mm, Bar bore 31,8 mm.
  • Handlebar: Alu Low Rise, 720 mm.
  • Seatpost: Alu 31,6 mm.
  • Saddle: Whistle Performance.
  • Tyres: Schwalbe Smart Sam, Performance, Addix, 29 x2,35.

Specifications may change without notification.

Electrical features

  • Bosch Performance CX Cruise.
  • Maximum torque: 85 Nm.
  • Sensor type: Torque.
  • Battery: 500.
  • Battery charger type: 2 Amperes.
  • Charging time: Up to 7.5 hours.
  • Assisted max speed: 25 km/h.
  • Display: Purion.
  • Power modes: Eco(60 %), Tour(140 %), EMTB(from 140 % up to 340 %), Turbo(340 %).