Track Axle Back W/ 4" Polished Tip and No Muffler | SUTP15WRX-40SWS

• 2015–2021 Subaru | WRX STI
• 2015–2021 Subaru | WRX

This single exit muffler delete replaces the entire Y and axleback section of your standard Nameless catback by removing one v-band clamp and four hangers. Designed to fully unleash the sound of your WRX or STI, this system is perfect for track days or spirited drives when you want to hear every note of your engine clearly through your helmet.

Key Features

• Track-Ready Sound
  Amplifies exhaust note for improved engine feedback, ideal for hearing RPM changes on track or enjoying a louder, more aggressive tone on cruises.

• Lightweight Design
  Removes unnecessary mufflers and hardware, saving up to 25 lbs compared to quad-exit catback systems.

• High-Quality Construction

  • CNC mandrel bent tubing for smooth exhaust flow

  • 100% T304 stainless steel, precision fabricated and fitted

  • Hand TIG welded for durability and quality

  • Solid hanger bars with included urethane exhaust hanger bushings for secure, lightweight retention

Design & Fitment

• Routes from the secondary circuit outlet on the Nameless midpipe, exiting diagonally out the passenger side behind the differential

• Optional single exhaust tip included for a clean finish

• Designed and built in Woodland, Washington

Benefits

• Improved Power & Response
  Full catback system gains of +32 ft-lb torque and +22 whp at 4500 rpm (when paired with the Nameless midpipe)

• Weight Reduction
  Saves weight by removing the Y and axleback sections, improving overall vehicle dynamics

• Easy Installation

  • Remove axleback and Y section by loosening a single 13mm nut at the v-band and five exhaust hanger bushings

  • Includes all necessary hardware, gaskets, and a three-hole exhaust hanger bushing for the rear-most mount

Fitment

• Subaru WRX: 2015–2021 (with Nameless Performance Midpipe)

• Subaru STI: 2015–2018 (with Nameless Performance Midpipe)

❌ Not compatible with 2019+ STI models

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