Description

Flowmaster American Thunder Crossmember-Back Exhaust SystemFlowmaster is proud to introduce our American Thunder dual exhaust system for 1967-1974 Camaro and Firebird, and 1968-1974 Nova. The system features our exclusive 80 Series Crossflow performance muffler that tucks up high behind the rear differential. Other features include all mandrel-bent dual 2.50-inch head pipes with a built-in H-pipe crossover and dual 2.50-inch tailpipes for a deep rich sound and optimum performance. This Crossmember-Back aluminized steel exhaust system gives these classic muscle cars a moderate tone inside and out. The system includes all parts, hardware and illustrated instructions and is covered by our 3-year Limited Warranty. If you prefer Stainless steel construction, check out optional system# 817104 which comes with a Lifetime Limited Warranty. Notes: Does not include manifold downpipes or header reducer cones. Convertible models will require adding 3/8-inch of shims to the stock factory X-brace for clearance or purchasing Hotchkis Performance Convertible brace Part# 1404.”Works with Factory manifolds or headers.Connector pipes not included.

Catalytic Converter Included: No

Catalytic Converter Quantity: 0

Clamping Type: U-Bolt

Clamps Included: Yes

Drive: 2WD

Exhaust Series: American Thunder

Exhaust Tip Quantity: 0

Exhaust Tip Quantity: Sold Separately

Exhaust Tip Shape: Round

Exit Style: Dual Out Rear

Finish: Aluminized

Gasket Or Seal Included: No

Grade Type: Performance

Hangers Included: Yes

Heat Shield Included: No

Inlet Diameter: 2.50″

Inlet Type: Weld-On

Main Piping Diameter: 2.50″

Mounting Bracket Included: Yes

Muffler (Rear) Body Height: 4.00 Inch

Muffler (Rear) Body Length: 18.00 Inch

Muffler (Rear) Body Width: 9.75 Inch

Muffler (Rear) Finish: Black High-Temperature Paint Finish

Muffler (Rear) Type: Chambered

Muffler Body Length: 13.00 Inch

Muffler Body Material: Aluminized Steel

Muffler Body Shape: Oval

Muffler Finish: Black High-Temperature Paint Finish

Muffler Flanged Inlet: No

Muffler Flanged Outlet: No

Muffler Included: Yes

Muffler Inlet Connection: Slip-Fit

Muffler Inlet Inside Diameter: 2.50 Inch

Muffler Inlet Outside Diameter: 2.63 Inch

Muffler Outlet Connection: Slip-Fit

Muffler Outlet Quantity: 1

Muffler Part Number: 42585

Muffler Quantity: 1

Muffler Series: 80 Series Crossflow

Muffler Type: Chambered

Pipe Color: Silver

Pipe Material: Aluminized Steel

Sound Level: Moderate

Spring Bolt Kit Included: No

Tail Pipe Outlet Outside Diameter: 2.50 Inch

Tail Pipe Quantity: 2

Tail Pipe Quantity: Dual

Tail Pipe Tapered Outlet: No

Type: Crossmember-back

Valve Included: No

Valve Type: Not Applicable