Twins Championshipwinning suspension set-up for the Aprilia RS660
Italian suspension manufacturer Bitubo is celebrating race success - with Kaleb De Keyrel and the Robem Engineering team claiming the 2021 Twins Championship of MotoAmerica with Bitubo suspension equipped Aprilia RS660s . Featuring what Bitubo describes as an " incredibly advanced configuration ", De Keyrel ' s win featured its pressurised EBH cartridge . Containing a series of innovative systems such as its patented Full Pressure System ( FPS ) with antifriction surface coating and new overpressure control system ( OPC ). Race-proven ( World SBK , BSB , IDM , CIV ), they feature lightweight alloys , including Cr-Si steel springs , an Ergal ( zinc aluminium alloy ) cartridge body and 27 mm Ergal piston , 10 mm pumping rod with anti-friction surface coating and mechanical bottom-out with polyurethane buffer in oil resistant NBR ( nitrile-butadiene rubber ).
The upper fork cap has integrated spring preload adjustment and damping adjustment in compression and extension . Additional features include a patented Coaxial Compensation Chamber , pressurisation force control system and hydraulic lubrication separated from sliding lubrication . The kit includes spare springs ( one each with a softer and a more rigid coefficient ) to allow for three different set-up combinations . At the rear , and derived from its racewinning XXF shocks , the XXZ ( previously only available for its official race teams ) is Bitubo ' s top-of-the-line technologically advanced rear mono shock . Features include four-way adjustment - compression and extension at low and high speeds - with new settings designed to give the driver the best feeling possible . The 14 mm stem increases smoothness , while a 30 mm piston reduces the fluid masses in motion for a faster response to stresses . Particular attention was paid to maximising the sensitivity and accuracy of the adjustments with the XXZ specifically designed to reduce inertia and ensure an immediate control of suspension oscillations . The XXZB1 is the version with the most extreme pneumatic preload of the XXZ line , with " precision , speed and
lightness the essence of a new design that can be operated via a separately available rechargeable quick coupling reservoir . The XXZ31 offers hydraulic preload adjustable up to 12 mm ; the XXZ31V2 version allows the
preload to be adjusted to a maximum of 10 mm ". www . bitubo . com
Long Life Warranty
From 2021 , Bitubo has been making its ' Long Life Warranty ' programme available for all its products . Up to 2020 , the standard Bitubo warranty was 24 months , but that can now be extended for up to a maximum of six years if a
periodic overhaul is carried out by a Bitubo Technical Centre before the expiry of the standard warranty period . The list of Bitubo Technical Centres is visible online in the Dealers and Technical Area of its website .
12 INTERNATIONAL DEALER NEWS - DECEMBER 2021 / JANUARY 2022 www . idnmag . com