The 80 series is a cross-flow design for applications where the muffler is mounted transversely behind the rear end. The inlet is located next to one of the outlets on the same side of the case. Delivering an aggressive muscle car sound both inside and outside the vehicle, this is an excellent replacement for Camaros and Firebirds with transverse mufflers. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.Flowmaster 80 Series Chambered MufflerSpecifications: 614 4.00 615 15.00 621 409 Stainless Steel 616 9.75 California Proposition 65 Yes 1882 No 17 Black 1161 0 Exhaust Tip Quantity Sold Separately Finish High-Temperature Paint 3390 Performance 617 No 618 No 601 2.50 619 Offset 1171 2.63 620 1 596 Weld-On 596 Clamp-On 1174 Chambered (Transverse) 622 2.50 Outlet Location Dual (Transverse) 1172 2.63 623 2 598 Dual 8971 21.00 624 No 33 Oval Sound Level Aggressive 626 No 3145 Universal Brand Flowmaster California Proposition 65 Chemical Name Chromium (hexavalent compounds) California Proposition 65 Chemical Name Nickel (Metallic) Category Exhaust Emission Code 5 Fitment Universal Inlet Diameter 2.50 Mount Type Uses New Hangers (Not Included) Muffler Series 80 Series Crossflow Product Type Street Mufflers Vehicle Type Classic Muscle Car Vehicle Type Street/Strip Vehicle Type Late Model Muscle Car Warning California Proposition 65 9957 Slip-Fit 9958 Slip-Fit part type Exhaust Muffler Sub Category Mufflers Description_ABR MUFF 2.50IN Description_SHO FM80SRS OFF/DUAL 2.5 Description_INV 25INODUAL OUT 80 SERIES 409S Description_ASC Universal Muffler - Some adaptation may be required. Description_DES Flowmaster 80 Series Chambered Muffler Description_EXT 80 Series Crossflow Stainless Steel - 2.50 Offset In / 2.50 Dual Out - Aggressive Sound Description_MKT The 80 series is a cross-flow design for applications where the muffler is mounted transversely behind the rear end. The inlet is located next to one of the outlets on the same side of the case. Delivering an aggressive muscle car sound both inside and outside the vehicle, this is an excellent replacement for Camaros and Firebirds with transverse mufflers. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability. Description_FAB Aggressive Sound Exterior Exhaust Tone Noticeable interior resonance The original two chamber design Cross Flow Applications