'Innocenti' exhaust silencer + tailpipe with small clamp for Lambretta S2 models with the later, longer (normal) type cylinder.
This exhaust is supplied WITHOUT a U-bend M193.

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The various exhausts for Lambretta S1 LI + S2 models are as follows:

M192d = ‘Long neck’ exhaust silencer + short U-bend + tube type tailpipe + clamps for Lambretta LI S1 Vers.1 (1958 production models with the early short cylinder). Supplied as a COMPLETE unit. The exhaust homologation number is ‘APP.IGM.880/58/S’

M192b = Exhaust silencer + long type U-bend + pressed steel tailpipe + clamps for 1959 production Lambretta LI S1 Vers.2 & early production Lambretta S2 LI / TV (models with the early short cylinder). Supplied as a COMPLETE unit. The exhaust homologation number is ‘DGM0227 S’

M192 = Exhaust silencer + long type U-bend + pressed steel tailpipe + clamps for mid/late production Lambretta S2 LI / TV (models with the longer / normal height cylinder). Exhaust supplied with tailpipe but WITHOUT the U-bend M193 which can be purchased separately. The exhaust homologation number is ‘DGM0227 S’