Diâmetro interior onde encaixa a curva de escape 30 mm. Compatibilidade 50cc_confersil_504ss_1980, 50cc_efs_220m_1981, 50cc_efs_gtsuper_1981, 50cc_efs_rx500sport_1981, 50cc_efs_rx500turismo_1981, 50cc_famel_f111_1981, 50cc_famel_f76_1985, 50cc_famel_f77_1985, 50cc_famel_mirage74_1985, 50cc_famel_mirage75_1981, 50cc_famel_mirage76_1980, 50cc_famel_supersport_1980, 50cc_forvel_sintra_1980, 50cc_macal_2100sport_1980, 50cc_macal_2100turismo_1980, 50cc_macal_m70sport_1980, 50cc_macal_m70turismo_1980, 50cc_vilar_deluxo_1980
