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XDR Latest Products
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AIRAID Performance Air Intake System- 404-362
$449.99
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Sinister Universal Replacement Air Filter (4" Inner Diameter).
$161.06 $168.99 -
16-18 Ford Focus RS (Hatchback - 2.3 - AWD) Exhaust System Kit
$1,838.48
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Dodge (5.9) Ignition Control Module
$783.12
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Injen IS Short Ram Cold Air Intake System - IS1375 INJ-IS1375
$323.51
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Product
Price
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- Delivers the original, aggressive Flowmaster tone inside and out — the classic 40 Series sound
- Fully MIG welded 16 gauge aluminized steel construction for maximum durability
- High-temperature paint finish stands up to real-world exhaust heat
- Universal fitment with a 3.00″ inlet, ideal for street rod and custom builds
- Iconic chambered design from the trusted Flowmaster company
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- Delivers the most aggressive, deepest-sounding tone in Flowmaster’s four-inch case street muffler lineup
- Delta Flow® technology carried over from the larger Super 40 mufflers for strong performance
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- Universal fitment with a 2.25-inch inlet for flexible custom and replacement builds
- High-temperature paint finish helps the compact four-inch case stand up to heat
- Purpose-built for street/strip vehicles that demand serious exhaust attitude
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- Delivers Flowmaster’s most aggressive, deepest sounding four-inch case street muffler tone
- Proven Delta Flow® technology shared with the larger Super 40 series for strong performance
- 16 gauge aluminized steel body, fully MIG welded for maximum durability
- High-temperature paint finish helps resist heat and wear
- Universal fitment with a 2.25-inch inlet and 9.50-inch body width, ideal for classic muscle cars
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- Delivers Flowmaster’s most aggressive, deepest four-inch case street muffler sound using proven Delta Flow® technology
- Fully MIG welded 16 gauge aluminized steel construction for maximum durability
- High-temperature paint finish stands up to the heat of everyday street driving
- Universal fitment with a 2.25-inch inlet, ideal for late model muscle car builds
- Compact 9.50-inch body width packs big, rich tone into a durable package
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- Delta Flow® technology delivers the deepest, most aggressive tone in Flowmaster’s four-inch case street muffler lineup
- 16-gauge aluminized steel, fully MIG welded for maximum durability
- High-temperature paint finish helps the compact four-inch case stand up to the heat
- Universal fitment with a 2.25-inch inlet for flexible custom exhaust builds
- Rich, aggressive sound purpose-built for classic muscle cars
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- Delivers Flowmaster’s most aggressive, deepest four-inch case tone using proven Delta Flow® technology
- Built from 16-gauge aluminized steel and fully MIG welded for maximum durability
- Compact 9.50″ body with a 2.50″ inlet fits a wide range of Street/Strip builds
- Universal fitment gives you flexibility for custom exhaust setups
- High-temperature paint finish stands up to real-world exhaust heat
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- Delta Flow® technology delivers Flowmaster’s most aggressive, deepest four-inch case street muffler sound
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish stands up to the heat of street and strip driving
- Universal fitment with a compact 9.50-inch body and 2.50-inch inlet for flexible installation
- Purpose-built for Street/Strip vehicles that demand a powerful, rich exhaust tone
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- Delta Flow® technology delivers Flowmaster’s most aggressive, deepest four-inch case street muffler tone
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish stands up to heat and the elements
- Universal fitment with a 2.50-inch inlet and 9.50-inch body width for flexible installs
- Tuned for street/strip vehicles that demand a rich, powerful exhaust note
-
- Delivers Flowmaster’s most aggressive, deepest sounding four-inch case street muffler tone
- Delta Flow® technology carried over from the larger Super 40 series for proven performance
- 16-gauge aluminized steel construction, fully MIG welded for maximum durability
- Universal fitment with a compact 4-inch case and 3.00-inch inlet for flexible custom builds
- High-temperature paint finish helps it stand up to real-world exhaust heat
- Ideal for classic muscle car owners who want bold, unmistakable sound
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- Delta Flow® technology delivers a powerful, rich, aggressive exhaust tone
- Flowmaster’s deepest sounding, highest performing four-inch case street muffler
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish for lasting protection against heat
- Universal fit with a 9.50″ body width—ideal for classic muscle car builds
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- Delta Flow® technology delivers Flowmaster’s most aggressive, deepest four-inch case street muffler sound
- 16 gauge aluminized steel, fully MIG welded for maximum durability
- Universal fitment with offset (same side) outlet for flexible custom installs
- High-temperature paint finish resists heat and the elements
- Compact four-inch case with a 9.50-inch body width fits a wide range of builds
- Purpose-built for Street/Strip vehicles that demand an aggressive tone
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- Delta Flow® technology delivers Flowmaster’s most aggressive, deepest four-inch case street tone
- 16-gauge aluminized steel, fully MIG welded for maximum durability
- Compact 9.50-inch body width fits tight chassis while keeping big sound
- 3.00-inch inlet designed to flow with serious performance exhaust setups
- High-temperature paint finish protects the case under demanding conditions
- Perfect match for classic muscle car and aggressive street builds
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- Signature Flowmaster 40 Series sound — aggressive tone inside and outside the vehicle
- 16 gauge 409S stainless steel, fully MIG welded for maximum durability
- High-temperature paint finish for lasting protection against heat and the elements
- Universal fitment for Truck/SUV builds and custom exhaust systems
- 2.25″ inlet diameter with a 9.50″ body width in the classic chambered design
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- Delivers the original, aggressive Flowmaster tone inside and out
- 16 gauge 409S stainless steel, fully MIG welded for lasting durability
- 2.50-inch inlet and 9.50-inch body width with universal fitment
- High-temperature paint finish stands up to heat and the elements
- Chambered 40 Series design ideal for classic muscle car builds
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- Delivers the original, aggressive Flowmaster tone inside and out for a true muscle car sound
- 16 gauge 409S stainless steel, fully MIG welded for maximum durability
- High-temperature paint finish adds extra heat and corrosion protection
- Universal fitment with a 2.50″ inlet and 9.50″ body width for versatile classic muscle car builds
- Part of the legendary Original 40 Series chambered design that defined the Flowmaster company
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- Delivers the original, aggressive Flowmaster 40 Series sound — bold interior and exterior tone
- Built from 16 gauge 409S stainless steel and fully MIG welded for maximum durability
- 3.00″ inlet diameter with a 9.50″ body width for a strong flow foundation
- Universal fitment makes it ideal for classic muscle car builds and custom exhaust systems
- High-temperature paint finish helps it withstand the heat of hard driving
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- Delta Flow® technology delivers Flowmaster’s most aggressive, highest-performing street tone in a four inch case
- 16 gauge 409S stainless steel, fully MIG welded for maximum durability
- High-temperature paint finish stands up to real exhaust system heat
- Universal fit with a 2.25″ inlet and 9.50″ body — ideal for late model muscle car builds
- Perfect centerpiece for a custom catback exhaust or cat back muffler system
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- Delta Flow® technology delivers the aggressive, powerful tone muscle-car owners want in a compact four-inch case
- 16-gauge 409S stainless steel, fully MIG welded for maximum durability
- Universal fitment with a 2.25 inlet diameter for flexible exhaust system builds
- High-temperature paint finish stands up to heat cycling and the elements
- Ideal centerpiece for a late-model muscle car cat back exhaust system upgrade
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- Delivers the original, aggressive Flowmaster 40 Series sound inside and out
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish for added heat and corrosion protection
- 3.00″ inlet with dual outlet location and a compact 9.50″ body width
- Chambered performance muffler tuned for a bold, race-inspired tone
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- Delivers the original, aggressive Flowmaster 40 Series tone — bold interior and exterior sound
- Fully MIG welded 16 gauge aluminized steel construction for maximum durability
- High-temperature paint finish stands up to real-world exhaust heat
- Universal fitment with a 9.50 body width for versatile custom and Street Rod builds
- Iconic chambered design from the Flowmaster company that defined the signature sound
-
- Delta Flow® technology delivers a rich, powerful, and aggressive tone in a compact four-inch case
- Built from 16-gauge 409S stainless steel and fully MIG welded for maximum durability
- Flowmaster’s highest-performing, most aggressive street muffler in its four-inch class
- Universal fit with a 3.00-inch inlet, ideal for late-model muscle car exhaust builds
- High-temperature paint finish adds protection against heat and the elements
- Flexible setup — pair with your choice of hangers and exhaust tips (sold separately)
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- Delivers the original, aggressive Flowmaster tone inside and out
- 16 gauge aluminized steel, fully MIG welded for maximum durability
- High-temperature paint finish built to handle exhaust-system heat
- Universal fitment with 2.50-inch dual inlet, ideal for Street Rod and custom builds
- Compact 9.50-inch body width fits a wide range of exhaust routing projects
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- Delivers the original, aggressive Flowmaster sound both inside and outside the cabin
- Built from 16 gauge 409S stainless steel and fully MIG welded for maximum durability
- High-temperature paint finish adds extra protection against heat and the elements
- Universal fitment with a 3.00-inch inlet and dual outlet, ideal for classic muscle car builds
- Part of the legendary Original 40 Series that defined the Flowmaster sound
-
- Delivers the original, aggressive Flowmaster tone with a bold interior and exterior sound
- Built from 16-gauge 409S stainless steel and fully MIG welded for maximum durability
- High-temperature paint finish helps resist harsh under-vehicle heat
- Universal fitment designed for Truck/SUV applications with a 2.25″ inlet
- Iconic Original 40 Series chambered design — the classic Flowmaster muffler
Showing 1–24 of 42 results
