This is the Exhaust Stack Gasket for the Super Tigre G-34. This is the exhaust gasket. FEATURES: Green marble colored fiborous gasket material. INCLUDES: Five exhaust stack gaskets. REQUIRES: Installation on engine. SPECS: Length: 37.5mm (1.477") Width: 10.3mm (.406") Thickness: .5mm (.020") Port dimensions: 6.5mm (.257") x 18.2mm (.717") pjm 7/02/02 ir/kh