ECH29Pressurized Cartridge fork
ECH29 Fork cartridge born for Racing
The new ECH pressurized cartridge containing a sequence of innovative systems, such as: FPS, EC and LC. These systems are the result of an extensive research and development by our R&D Department in collaboration with the best Teams taking part at the SBK World Championship and also at the British and Italian Championship. All the information about these systems can be found in the following pages.
TARGET: To offer the rider the highest stability to the front end, thanks to its perfect control of deceleration even under the hardest braking; it increases the grip entering and exiting a curve thanks to its immediate hydraulic control; a more uniform tire wear thanks to its instant control of applied force. All this gives the rider the best control under braking, even at extreme angles, and the best curves on any kind of tracks.
  • Hydraulic piston with FPS® system ( Patent Pending) Ø27mm, in Ergal material
  • Pumping rods with Ø10mm with surface coating against friction.
  • Mechanical end-stroke with polyurethane bump stop
  • CrSi steel springs, with heat treatment, stabilising procedure and final shot-basting with steel balls.
  • Upper cap of the fork with integrated hydraulic spring preload
  • Independent damping adjustment in compression and rebound
  • Coaxial compensation chamber (Patent Pending)
  • Ergal cartridge body with internal surface coating against friction
  • Separated Hydraulic/sliding lubrication
On the top cap there are all adjustments: the spring preload is for the first time supplied with hydraulic actuation, while rebound and compression are separated on the two cartridges in a simpler and more convenient way.
ECH29 is supplied with the following adjustments:
  • Spring preload (range 12 mm in 6 turns)
  • Compression adjustment(24 clicks)
  • Rebound adjustment(24 clicks)
EC Easy Changer: this is a quick change system: fast replacement of the spring, already available in the previous YCE cartridge version, with a free key and a new exclusive cartridge dismantling system, which does not require the fork removal. This system makes the set-up bike modification easier by racing technicians.
LC Light Components: this product is manufactured with a high percentage of special light alloys, thus decreasing the weight of the previous YCE considerably.
FPS®, Full Pressure System represents the highest efficiency and practicality of this patented system. This innovative damping system is created for immediate fork oscillation control, thus avoiding any cavitations of the internal fluid. This system is low pressure gas pressurized. The cartridges are asymmetric: where one controls the compression, the other one controls the rebound. With two alternate chambers at the two ends, it is possible to reach a very high damping coefficient even at very low speed.
The package is supplied with Olio Synt FUCHS SILKOLENE offering rich sliding, for the external lubrication, granting a perfect consistency and performance. It is available for the most popular 600-1000cc bikes on the market.
XXF31Racing Monoshock with hydraulic preload

Introduced in 2008, under constant development, XXF is sits at the top of current technology
EVOLUTION of this shock has culminated in an overall weight decrease, using an aluminium body, which has always been a very important feature in racing for better handling response to the rider’s needs. In addition to new set-ups, even more race-ready, and a upgrade aimed at  better performance and adjusting simplicity of the length and hydraulic spring preload adjustment.
INNOVATION is in the internals of the shock, with new technical solutions for improving the damping coefficient and increasing the stability at high temperature. The Ø14mm rod improves the sliding, while the Ø30mm piston reduces the moving fluid masses. These improvements have produced a  reduction of inertial forces, and therefore an immediate control of the suspension oscillations.
Some particular attention is paid to increase sensitivity and precision of the adjustments, which are all positioned in the upper portion of the shock.
OBJECTIVE is to give the rider the precise control and maximum grip increase, as well as even tire wear thanks to the immediate force control. This ensures the best rider control in the curve even at extreme inclination angles, fast direction changes, maximum confidence under acceleration in all kinds of tracks and perfect stability of the rear, even under the hardest braking.
XXF is supplied with the following adjustments:
  • Low speed compression in  24 clicks
  • High speed compression in 20 clicks
  • Rebound in 24 clicks
  • Hydraulic spring preload range 12mm (in 24 clicks)
  • Adjustable length up to 8 mm, easy to adjust with the supplied knob
ADJUSTMENT VALVES KIT XXF shock absorbers can be easily and quickly modified thanks to the replacement of the XD compression valve and XS rebound valve. The supplied set-up is labelled on the shock body. Bitubo Racing department has created specific set-ups for several bikes developed with the world champion teams and their riders, now available to you, the enthusiast,  with specific damping coefficients.
 Bitubo supplies complete valve kits in single or double speed, provided with the relative graphs.
XXF can be fully re-built.