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20" Trial bike CREWKERZ JEALOUSY ULTIMATE is the top of the line in the field of trials bikes. The JEALOUSY ULTIMATE is the highest class of trials bike offered by CREWKERZ to date! The 2023 model year once again brings with it further minor improvements over previous versions. Adjustments to the appearance and of course its unrivalled strength and stiffness! A bike that has no other goal than to bring riders and racers a trials bike of the highest quality! Updated frame, new head tube, carbon chain tensioner, modified carbon fork, lighter cranks and fitted with the best components from the WAW range. Race bike with carbon fork and handlebars. Bike comes with hydraulic front rim brake TRIALTECH Jack Carthy Signature with MAGURA HS33 calipers and rear disc brake HOPE Tech 4 Trial Zone.

71,000 Kč
Tax included
Pre-order (available during November 2023)

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The frame of the CREWKERZ JEALOUSY ULTIMATE trials bike is equipped with mounts for the disc hydraulic brake using PM mounts. This trials bike is equipped with a very lightweight carbon WAW ULTIMATE fork with also PM (Post Mount) mounts for the hydraulic disc brake. The WAW ULTIMATE carbon handlebar further reduces the weight of the bike and creates a racing edge! The JEALOUSY ULTIMATE trials bike comes with front hydraulic rim brake TRIALTECH Jack Carthy Signature 2022 with MAGURA HS33 calipers and rear hydraulic disc brakes HOPE Tech 4 Trial Zone + HOPE TRIAL 160mm rotor. This trials bike special really brings you the best you can get on the aluminum frame trials market! The unmatched quality and strength of the frame, fork and other components has been unrivaled in this category for years! Enjoy the CREWKERZ JEALOUSY ULTIMATE with WAW ULTIMATE carbon components!

The special CREWKERZ JEALOUSY ULTIMATE trials bike is equipped with the best CREWKERZ / WAW has to offer!

These are 100% racing components and the bike as a whole is really incredibly stiff and strong!

New features for 2023 model

  • change in the strength of the frame tubes to achieve the necessary amount of reinforcement and reduce sagging, softening or avoiding cracking and increasing sensitivity
  • modified head tube to increase stiffness at the top of the bike during hooks and jumps into the front wheel
  • 120mm head tube height
  • integrated headset that lowers the height by 9mm to allow for a greater range of handlebar height adjustment
  • the bike is equipped with new HOPE Tech 4 Trial Zone rear brake
  • carbon chain roller pulley tensioner with 9T wheels
  • new rear to centre tube connection for increased frame stiffness and faster pedalling response
  • modified lighter WAW AS30 cranks without sharp edges to prevent ankle injuries

Main benefits

  • polished aluminium with matte black paint combined with black accessories
  • AS30 bottm bracket and cranks CREWKERZ AS30 (2 piece / with rounded edges)
  • integrated roller pulley tensioner and vertical dropouts
  • thru axle on front and rear wheel, which extremely increases the strength and stiffness of the whole bike
  • tapered head tube with extended bottom diameter to 1.5"
  • asymmetrically positioned down tube to absorb pedaling/jumping stress on the chain side
  • frame construction that stays rigid for a very long time!

Components list

  • Frame: CREWKERZ Jealouy 1005mm
  • Fork: CREWKERZ WAW ULTIMATE 1.5" tapered 20" HS33 carbon fork (surface - UD carbon fiber layer)
  • Headset: CREWKERZ tapered semi-integrated (black)
  • Stem: CREWKERZ WAW ULTIMATE 155mm x 20° (forged)
  • Handlebar: CREWKERZ WAW ULTIMATE carbon handlebar (riser) with lenght 720mm / height 108mm
  • Grips: CREWKERZ foam grips
  • Front Brake: Lever TRIALTECH Jack Carthy Signature 2022 + MAGURA HS33 calipers
  • Rear brake: HOPE Tech 4 Trial Zone  + HOPE TRIAL 160mm rotor
  • Cranks: CREWKERZ WAW AS30 160mm (2-piece cranks / SHIMANO HG freewheel/pinion mounting system with lockring)
  • Pedals: CREWKERZ WAW Single Cage
  • Freewheel: CREWKERZ 135p/18t (SHIMANO HG mounting system)
  • Pinion: CREWKERZ 12T (SHIMANO HG mounting system with lockring)
  • Chain: KMC Z610HX (black)
  • Chain tensioner: carbon CREWKERZ roller pulley - black
  • Rockring: CREWKERZ AS30 (black - rotatable rockring for right and left foot in front)
  • Front Wheel: WAW Hastagg Edition 20" 32mm rim + CREWKERZ WAW hub / 8mm thru axle
  • Rear wheel: WAW Hastagg Edition 19" 47mm rim + CREWKERZ WAW hub / 12mm thru axle
  • Front Tyre: 20" x 2.0" Monty Pro Race
  • Rear Tyre: 19" x 2.5" Monty Pro Race


  • Length = 1005mm
  • Chainstay lenght = 350mm
  • BB Rise = +85mm
  • Head tube angle = 71,5°


  • complete bike = 7,6kg

Data sheet

Bike fork material
Bike handlebars material
Bike frame material
Bike front break type
Rim hydraulic
Bike rear break type
DISC hydraulic
Bike brake mounts
Rim 4-bolts
BIke headset
BIke steerer tube
1 1/8" - 1.5" (28,6 - 38,1mm)
Bike bottom bracket type
Bike crankset type
Bike crank lenght
Bike fork dropouts
Thru axle
Bike frame dropouts
Thru axle

Specific References

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71,000 Kč