PLM Subaru WRX & STI 2015 - 2021 Axle-Back Exhaust / Muffler Deletes

PLM Subaru WRX & STI 2015 - 2021 Axle-Back Exhaust / Muffler Deletes - View 3

PLM Subaru WRX & STI 2015 - 2021 Axle-Back Exhaust / Muffler Deletes - View 4

PLM Subaru WRX & STI 2015 - 2021 Axle-Back Exhaust / Muffler Deletes - View 5

PLM Subaru WRX & STI 2015 - 2021 Axle-Back Exhaust / Muffler Deletes - View 6

$255.5 ~~$399~~ In stock

PLM ( Private label Mfg. ) Axle-back Exhaust also known as, Muffler Bypass, Muffler Deletes, or Track Pipes are made of TIG welded stainless steel and weighs at a remarkable 16 lbs, compared to the stock brick of of mufflers.

The piping of this track-pipe has an outer diameter of 2.5" (65mm), with dual 3.5 inch single wall staggered tips.

Dual exit for the most direct exhaust path, with easy & quick 15-minute install using only hand tools.

Ultra light weight of 8 lbs. each side.

Options: Blue-Titanium Burnt Tips or Polished Tips

Note: Blue exhaust tips are Gradient Blue Color

Vehicle Fitment:

Subaru WRX 2015 - 2021

STi 2015 - 2021

Key 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
OEM style exhaust hanger rod construction
High quality hand TIG welding
Optimal weight reduction from the factory mufflers
Ultra light weight of 8 lbs each side (16 lbs total)
One year limited warranty
CNC machined flanges
Flange is .38" / 3/8" thick
18 gauge on the stainless steel piping. Measured at .049" to .050"
Installation Note: Use factory gaskets for installation.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Matthew U. ★★★★★ Oct 21, 2026

The TIG welding on these pipes is really clean, and the 16-pound weight makes them noticeably easier to handle than the stock mufflers. I’ve got a nice deep tone now without any drone on the highway.

Evelyn Y. ★★★★★ Oct 20, 2026

Installed these on my 2018 WRX and the weight savings are immediately noticeable when you pick them up—16 lbs is crazy light compared to the stock boat anchors. The sound is deep and aggressive without being obnoxious on the highway, exactly what I was hoping for.

Mia ★★★★★ Oct 19, 2026

The TIG welding is really clean and the stainless steel feels solid, definitely lighter than I expected at just 16 lbs. The sound on my STI is much more aggressive now without being obnoxious on the highway.