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  • COBB [07 - 09 Mazdaspeed 3] 3 - inch Cat Back Exhaust - JDMuscleCat Back Exhaust Systemcobb571100
  • COBB [07 - 09 Mazdaspeed 3] 3 - inch Cat Back Exhaust - JDMuscleCat Back Exhaust Systemcobb571100
  • COBB [07 - 09 Mazdaspeed 3] 3 - inch Cat Back Exhaust - JDMuscleCat Back Exhaust Systemcobb571100
  • COBB [07 - 09 Mazdaspeed 3] 3 - inch Cat Back Exhaust - JDMuscleCat Back Exhaust Systemcobb571100
  • COBB [07 - 09 Mazdaspeed 3] 3 - inch Cat Back Exhaust - JDMuscleCat Back Exhaust Systemcobb571100
  • COBB [07 - 09 Mazdaspeed 3] 3 - inch Cat Back Exhaust - JDMuscleCat Back Exhaust Systemcobb571100
  • COBB [07 - 09 Mazdaspeed 3] 3 - inch Cat Back Exhaust - JDMuscleCat Back Exhaust Systemcobb571100

COBB Tuning

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COBB Gen1 SS 3-inch Cat-Back Exhaust - Polished 4-inch Tip

Fits: 07-09 Mazdaspeed3, 07-09 Mazda3 MPS/Mazdaspeed Axela

$74000
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Auto Parts Store of the Year 2026

COBB Tuning COBB Gen1 SS 3-inch Cat-Back Exhaust - Polished 4-inch Tip
Fits: 07-09 Mazdaspeed3, 07-09 Mazda3 MPS/Mazdaspeed Axela
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Fitment

Please Note: COBB official applications for product 571100 are 2007–2009 Mazda Mazdaspeed3 USDM, Mazda3 MPS WM, and Mazdaspeed Axela WM. This is the Gen1 3-inch SS cat-back with polished 4-inch tip.
  • 2007-2009 Mazda | Mazdaspeed3

Description

The COBB Gen1 SS Cat-Back Exhaust is a factory-like bolt-on system for 2007–2009 Mazda Mazdaspeed3, Mazda3 MPS, and Mazdaspeed Axela models. Mandrel-bent T304 stainless steel, a custom resonator, and a high-flow muffler improve durability, flow, and sound while staying within the SAE J1169 noise limit.

  • Fits 2007–2009 Mazda Mazdaspeed3
  • Fits 2007–2009 Mazda3 MPS and Mazdaspeed Axela
  • 3-inch mandrel-bent T304 stainless-steel construction
  • Custom resonator and high-flow muffler
  • TIG welded throughout
  • Polished 4-inch slash-cut tip with etched COBB logo
  • Subtle, deep exhaust note rated 11 dB below SAE J1169 limit
  • Product code: 571100
  • Not an emissions-related part

References: COBB Tuning official product page

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