Mounting kit for Circuit P4 handguard, fastening system by bracelets and adapters of aluminium alloy, rotatable 360°, provides a mounting extremely easy and stable. Available for alu handlebars diameter 22mm - internal 14mm (RP044) - conic handlebars diameter 28,6mm - internal 14mm (RP045) - non conic handlebars diameter 28,6mm - internal 15mm (RP046).