Before 1989 the silencers were round, 1989 onwards the silencers were flat sided.
Triumph Speedmaster T2202702 Original Exhaust Silencer America Speedmaster 900
Harley-Davidson Shovel Fxs Genuine Exhaust muffler Exhaust Silencer Original
Tecnigas Maxi-4 Exhaust Silencer - Maximum Power Delivery with Original Look
Mv Agusta Brutale Exhaust Silencer and Pipe Genuine Original
Exhaust silencer with kink original shape, plug manifold 28 mm Kreidler Florett
SUZUKI GSX1400 K2 - K4 2001-2004 RIGHT HAND EXHAUST SILENCER ORIGINAL PART