Outer diameter 38mm. Inner diameter 32mm. Thickness 11.5mm.
Outer diameter 34.6mm. Inner diameter 29mm. Thickness 11.5mm.
Outer diameter 42mm. Inner diameter 35mm. Thickness 12mm.
Downpipe to silencer gasket. Outer diameter 48.8mm. Inner diameter 40.5mm. Thickness 10mm. Replacement aftermarket part for Yamaha OEM 3FL-1...