Ramair sock style air filters, which feature one hole cut out of the foam on the underside of the air filter. The hole is designed so that you can pull the air filter over the top of the trumpets of the carburettor or the engines air intakes whichever is necessary. They are then secured with cable ties if needed which are included in this sale. They are constructed completely of foam which enables them to locate in the most difficult of areas and gives the most air flow. Supplied with cable ties for easy fitment. Features High performance twin layer foam Easy to clean using our filter maintance kit - CK-003 100% hand made in the UK - guaranteed against manufacturing defects for life Long lasting and hard wearing Unit Quantity No Of Inlets Internal Hole Diameter Inlet Hole Spacing External Height  External Width  Filtration Material Internal Structure                 2        Twin 29mm 85mm 110mm 90mm 15mm Dual Layer