Pounds Kgs Item
26.6 12.06 S4-style rear muffler
28.2 12.79 90+ GT twin-outlet rear muffler
18.2 8.25 89GT (and I assume CS & SE) rear muffler
8.6 3.90 RMB (928 International - SS I think)
     
21 9.52 Large Resonator (one of two) S4/GTS style
14 6.35 Small Resonator (one of two) GT style
20 9.07 Small Resonator (driver side) GTS and S4 style
27 12.24 Large Resonator (pass.side) GTS and S4 style
     
27 12.24 Collapsible Spare Tire