There are 4 products.
M4 Cat Eliminator Slip-On Exhaust Features: Standard style carbon fiber slip-on muffler Stainless steel tubing Eliminates stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Cat Eliminator Slip-On Exhaust Features: Standard style titanium slip-on muffler Stainless steel tubing Eliminates stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Slip-On Exhaust Features: Standard style carbon fiber slip-on muffler Stainless steel tubing Retains stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Slip-On Exhaust Features: Standard style titanium slip-on muffler Stainless steel tubing Retains stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)