Bill

carbon masts are not allowed in the F18 class. Therefore the X-4 mast is an aluminium extrusion.
BTW BIMARE new division BIMmast is going to manufacture a more flexible and lighter sticks for the Javelin 2.
Since the beginning of 2006 all BIMARE cats are fitted with BIM masts made from female moulds in the factory autoclave at 6 bar of pressure. The new A class tube is around 0,5 kg than the latest RIBA. BIMARE developed also a new carbon adjustable spreader assembly which weights only 260 gr.
For more info have a look at BIMARE website:
www.bimare.net