Sparex source: https://us.sparex.com/muffler-vertical-59009.html Product: Muffler - Vertical - Sparex S.59009 SKU: S.59009 Listing note: Fitting Ø mm: 1 13/16mm,Overall length: 1360mm,Muffler Ø mm: 90 x 90mm,Muffler Length: 590mm,Finish: Black Stove Enamel. Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.