Exhaust Header flange fitting kit, Stainless Steel consisting of header flanges, studs, spacers, nuts and spring washers MT500 & MT350 Ideally for MT500 with the 58 mm studs but will also fit MT350, as long as the spacers are used. 240-360 4 Studs, 273-851 2 Flanges, 84710274 4 spacers, 8499720 4 nuts, 84992494 4 spring washers Part number have been used for identification only