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  • Blox Racing [15-21 WRX/STI] Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips | BXEX-51104
  • Blox Racing [15-21 WRX/STI] Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips | BXEX-51104
  • Blox Racing [15-21 WRX/STI] Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips | BXEX-51104
  • Blox Racing [15-21 WRX/STI] Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips | BXEX-51104

BLOX Racing

BLOX Racing 5.0 (3)

Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips

Fits: 15-21 WRX/STI

$29610 $329.00 Save $32.90
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25 in stock
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Auto Parts Store of the Year 2026

BLOX Racing Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips
Fits: 15-21 WRX/STI
5.0 (3)

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Fitment

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

Description

BLOX Racing's standard version muffler delete kits are made from T304 stainless steel and TIG-welded for durability and reliability against cracks and leaks. Each features OEM location hangers and includes new gaskets and hardware.

BLOX Racing Muffler Delete Kits replace the OEM mufflers and greatly reduce the bulk and weight associated with them.

Features:

  • Direct bolt-on easy installation to OEM mid pipe / y-pipe
  • This product will not fit other aftermarket exhaust systems
  • Will not fit SPT model.
  • 2.5 inch, 16 gauge, stainless steel, mandrel bent pipe
  • Precision CNC Mandrel Bent
  • 3.5 inch single wall staggered tips
  • High quality hand TIG welding
  • Ultra light weight of 8 lbs each side (16 lbs total)
  • One year limited warranty

Shipping and Delivery

Review our Shipping Policy for delivery details, shipping costs and exclusions.

Warranty and Support

Limited Manufacturer Warranty

Return and Refund

Eligibility, exclusions, applicable fees and exceptions are detailed in our Return Policy. Restrictions apply to special-order and custom products.

Proposition 65

Proposition 65 Warnings: cancer and reproductive harm www.p65warnings.ca.gov