American Thunder Header-Back Exhaust System Aluminized With Dual Tail-Pipes 1964 1/2 - 1966 - Flowmaster
Part #: 21425
Manufacturer Part #: 17273
Exhaust System, American Thunder, Header-Back, 2-1/2 in Diameter, Dual Rear Exit, 2-1/2 in Polished Tips, Steel, Aluminized, Small Block Ford, Ford Mustang 1964-66, Kit
SEE IMPORTANT INSTALLATION NOTES BELOW
Flowmaster American Thunder Crossmember-Back Exhaust System
Fits 1964-1966 Ford Mustang with a V8 engine, 2.5" Aluminized Pipes - Aggressive to moderate sound
This American Thunder crossmember-back exhaust system is custom designed for the 1964-1966 Ford Mustang and is perfect for the person looking for a complete 2.50-inch dual exhaust system with a moderately aggressive exterior tone, and a moderate interior sound. With easy fit in mind, these 16-gauge aluminized steel systems feature all mandrel-bent tubing, an H-pipe to equalize the exhaust pressures and a pair of specially selected 40 Series Delta Flow performance mufflers for a deep powerful sound. The mandrel-bent 2.50-inch tailpipes tuck up out of the way for maximum clearance and the last few feet is all polished stainless steel for a show car look. Like all Flowmaster systems, benefits include improved throttle response, power, and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and instructions for an easy installation. The system is covered by our 3-year Limited Warranty. Connects to existing header collector reducer cones or manifold downpipes(not included.) If you prefer a full stainless steel system with a Lifetime Limited Warranty, check out exhaust system #817273. Notes: For non GT and hardtop models.
FEATURES:
- Includes Hangers and Hardware for an Easy Installation
- Mandrel-bent 16-gauge Aluminized Steel Tubing
- Extra Long Polished Stainless Steel Tips
- 40 Series Delta Flow Performance Mufflers
- Over 35+years of Flowmaster Quality
- Deep Powerful Exhaust Tone
- H-pipe Crossover Tube
- Crossmember-back System
SPECIFICATIONS:
- UOM: Kit
- Product type: Header-back exhaust system
- 2WD/4WD: 2WD
- Brand: Flowmaster
- Exhaust Series: American Thunder
- Exit Position: Dual Out Rear
- Heat Shield: No
- Inlet Diameter (in): 2.5
- Material: Aluminized Steel
- Muffler Flowmaster Part Number: 942541
- Muffler Quantity: 2
- Muffler Series: 40 Series Delta Flow
- Outlet Diameter (in): 2.5
- Product Type: Exhaust System
- Single Dual: Dual
- Sound Level: Aggressive / Moderate
- System Type: Crossmember-back
- Tip Diameter (in): 2.5
- Tip Quantity: 2
- Tubing Diameter (in): 2.5
FITMENT:
- 1964 1/2 - 1966 Mustang Coupe & Fastback, V8, Non-staggered Shocks, Non-GT
IMPORTANT INSTALLATION NOTE: WILL NOT FIT CONVERTIBLES OR STAGGERED SHOCKS. MEANT FOR HEADERS. HEADERS/CONNECTOR MANIFOLD PIPES NOT INCLUDED. MAY REQUIRE SOME DRILLING FOR BRACKETRY.
Year | 1964, 1965, 1966 |
---|---|
Manufacturer | Flowmaster |
Truck Freight | No |
California Prop 65 | ![]() |