Forestal HYDRA, versión “Halo”. La bicicleta de Andorra que llega a revolucionar el mercado de las bicicletas eléctricas, con un motor EON DRIVE desarrollado por FORESTAL BIKES. Este modelo fue diseña para los amantes del Donwhill quienes ponen a prueba cada obstáculo que se les cruce en su camino.

  • Aro 29″  180/170 mm de recorrido

*Imagen referencial, revisar cuadro de especificaciones para conocer los componentes de cada modelo


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Alpha Box


Based on Siryon, the Forestal Hydra keeps a race-ready weight to stiffness ration (weight without motor and hardware).


Carbon Cocktail – A blend of T1000, T800 and T700 carbon fibres for extreme precision rigidity.


Alpha Box Symmetric. A monocoque construction thought for the highest level of demand on the tracks.

63° / 62.7°*

Head tube angle

Race-ready geometry with handling to match, for a genuinely quick ride.

*Geometry details present small variations between Hydra Halo and Hydra Diōde due to small specification differences from suspension manufacturers.

76° / 75.7°*

Seat tube angle

-18mm / -16mm*

BB drop


Recommended height
< 165 cm


Recommended height
165 cm – 177 cm


Recommended height
177 cm – 187 cm


Recommended height
> 187 cm

Fits every rider.
Size-specific chainstay lengths and optimal reach for a balanced handling whatever your size.

A Top tube horizontal 571mm 603mm 639mm 660mm
B Reach 418mm 449mm 479mm 499mm
C Stack 619mm 619mm 632mm 646mm
D Seat tube length 420mm 430mm 465mm 500mm
E Chainstay horizontal 436mm 436mm 446mm 446mm
F Head tube angle 63 ° 63 ° 63 ° 63 °
G Seat tube angle 76 ° 76 ° 76 ° 76 °
H BB drop -18mm -18mm -18mm -18mm
I Wheel base 1212mm 1242mm 1288mm 1315mm
J Head tube length 95mm 95mm 110mm 125mm
K BB height 360mm 360mm 360mm 360mm
L Fork offset 46mm 46mm 46mm 46mm

Suspension System

Twin Levity

Patented Twin Levity suspension system with Hydra-specific downhill tune.

Single pivot, rocker and connecting rod, with linkage-driven kinematics.

Balance, performance and precision. Twin Levity is adjusted to provide the perfect ride.

Secure, direct in-mould main bearings.

Smooth floating linkage design.

Reduced component stress means Hydra will serve you long.



Ready to tame any terrain.






The lightest and most compact high-performance motor today.


A narrow Q-factor for a natural riding position.

250W / 60 Nm

Range and torque to maintain trail flow.


Standard chainrings and ISIS chainset.


Protection against the elements.

Built to last from the highest quality materials. EonDrive uses titanium for key components and is housed in a magnesium shell.

Without assistance, EonDrive is completely disengaged, bringing zero friction to the transmission. No noise, no drag, only resistance-free and intuitive pedalling.



360Wh 51V

Incredibly light and compact. Optimized to the maximum range.

1h 24min

Rapid charge technology brings Aurora to 80% capacity in just 84 minutes.

up to 610Wh

Increase Siryon`s battery capacity up to 610Wh by easily fitting 250Wh Aurora range extender to the bottle cage.


Smart Dashboard

  • Navigation
  • Maps
  • Geolocation
  • Anti-theft
  • Battery status
  • Assist control
  • Bike notifications
  • Record
  • Synchronize
  • Statistics
  • Training
  • Heart rate
  • Power
  • Speedometer
  • Elevation
  • G-force
  • Air time
  • Updates
SUSPENSION RockShox Boxxer Select / Super Deluxe Select+
BRAKES Formula Cura 4
WHEELS Crankbrothers Synthesis Alloy DH
WEIGHT Frame size M (42.3 lbs) 19,2 kg
FRAME Forestal Alpha Box Carbon Enduro 29
SIZES S / M / L / XL
MOTOR Forestal EonDrive 250W / 60Nm / IP67 / 1.95kg / 165 x 105 x 147mm
BATTERY Forestal Aurora Performance 360Wh / 52V / Integrated / Rapid Charge / 1.8kg / 350 x 72 x 50.5mm
DISPLAY Forestal Smart Dashboard 3.2
REMOTE Forestal Smart Trigger 3 Buttons / Battery & Assistance LED Indicators
FORK Rockshox Boxxer Select 29
SHOCK Rockshox Super Deluxe Select+ Coil
HEADSET Acros Integrated ZS 56 Top / ZS 56 Bottom / Internal cable routing / Stainless steel bearings
STEM Forestal X PP Direct Mount DH ⌀ 31.8mm / 7075 T6 Aluminum CNC
HANDLEBAR Forestal Oxydon C 780mm ⌀ 31.8mm / Upsweep 4° / Backsweep 6° / Rise 15mm
GRIPS Production Privée CR35 Forestal x Production Privée edition / 2-position adjustable (Tour / Race)
SEATPOST Crankbrothers Highline 7 ∅ 31.6mm / Length 125mm Size S / Length 150mm Sizes M, L / Length 170mm Size XL / Black ring / Aluminum 7076 T6
DROPPER REMOTE BikeYoke Triggy X Custom Forestal w./ Shiftmix
SADDLE Fizik Aidon X3 E-MTB Fibre reinforced nylon / S-alloy rails / 249g / 255 x 145mm
FRONT BRAKE / ROTOR Formula Cura 4 Carbon Polish 203mm 4-piston caliper / MixMaster / 6-Bolt Rotors
REAR BRAKE / ROTOR Formula Cura 4 Carbon Polish 203mm 4-piston caliper / MixMaster / 6-Bolt Rotors
CRANKS Praxis Carbon Q-Factor 170mm / ISIS Drive / 104 BCD / Length 160mm Sizes S, M / Length 165mm Sizes L, XL
CHAINRING SRAM X-Sync 2 Eagle 32T, 104 BCD
REAR DERAILLEUR SRAM GX 11 Speed / X-Actuation / Long cage / Colour: Black
HANGER SRAM UDH UDH Derailleur hanger / Aluminum
CASSETTE SRAM PG-1130 10-42T / 11 Speed / Colour: Black
CHAIN SRAM GX 11 Speed / Powerlock / Colour: Grey
SHIFTER SRAM GX 11 Speed / X-Actuation / Colour: Black
FRONT WHEEL Crankbrothers Synthesis Alloy 29
REAR WHEEL Crankbrothers Synthesis Alloy 29
FRONT TYRE Panaracer Romero 29 x 2.4 ST 3Comp.
REAR TYRE Panaracer Romero 29 x 2.4 ST 3Comp.


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