They are special sponge air lters: before using, damp them with a lm of lter oil and check the carburettor calibration. Carburetor connection D.28-35-42-45-49-55 Compatible with: - Aprilia: Area 51_S, MX 125 SM_M, MX 50_M, Rally 50 AC_S, Rally 50 LC_S, RS 125 -05_M, RS 125 06-10_M, RS 250 95-97_M, RS 250 98-_M, RS 50 -05 AM6_M, RS 50 -06 AM6_M, RS 50 06- Mot.Derbi_M, RX-SX 07- _M, Scarabeo 50 Min.AC_S, Scarabeo 50 Piaggio_S, Sonic 50 AC_S, Sonic 50 LC_S, SR 125/150_S, SR 50 04-Piag._S, SR 50 Min.AC 94-_S, SR 50 Min.LC_S, Tuono 125_M, Tuono 50_M - Beta: Ark 50 AC_S, Ark 50 LC_S, RR 50_S - Cagiva: Mito 125_M - Derbi: DRD PRO R/SM 50_M, GP1 50 LC_S, GPR 125 06-_S, GPR 50 06-_S, GPR 50_S, Senda 50 Evo_M, Senda_M - Gilera: DNA 125_S, DNA 50 LC_S, Runner 125/180_S, Runner SP 50 -05_S, Runner SP 50 06-_S, Stalker 50 AC_S, Thyphoon 125 2T_S, Thyphoon 50 AC_S, Typhoon 125_S - Honda: ZX DIO_S - Malaguti: Centro 50 AC_S, F10_S, F12 AC_S, F12 LC_S, F15 Firefox_S - Mbk: Booster 50 euro 0-1_S, Booster 50 euro 2_S, Mach G 50 AC_S, Mach G 50 LC_S, Nitro 50_S, Ovetto_S, Stunt 50 euro 0-1_S, Stunt 50 euro 2_S - Yamaha: AEROX 50_S, BW's 50 euro 0-1_S, BW's 50 euro 2_S, DT 50_M, neo's 50_S