A MUST FOR THE SSDT!! and other Road Trials etc. These new plastic, oversize tanks for the PRO models are superb. 3.5 Litre capacity which is 600ccs more than standard. They come complete with a normal type plastic (Acerbis) screw-on top and you use your original petrol tap. ALSO available for an extra £27.99 are the billet caps made by HOPE/REP. Gold and Red available.