APPLICATIONS OF THIS PRODUCT: According to the data provided by the manufacturer, this article is compatible with the following brands, models and years: YAMAHA RD 250 30/27 CV, 22/20 KW 2CIL. 1A2 1A2 BASTIDORES: 1A2 henceforth00101-1A2-100000 1976 YAMAHA RD 250 32/27 CV, 24/20 KW 2CIL. 522 522 BASTIDORES: 522 henceforth00102-522-100000 1975 YAMAHA RD 350 39 CV, 28,5 KW 2CIL. 521 521 BASTIDORES: 521 henceforth00102-521-200000 1975