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Exhaust› Mufflers and Resonators

Borla ProXS

ProXS Universal Muffler

Name: ProXS Universal Muffler
Brand: Borla ProXS
SKU: BOR-40357
Price: 135.59 USD
Availability: InStock

$135.59

SKU: BOR-40357

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Overview

The Borla ProXS 40357 is a universal muffler designed for enhanced exhaust performance. It features a 2.25-inch offset inlet and a 2.25-inch center outlet, with an oval-shaped 14-inch long body and a 19-inch overall length. Constructed from T-304 austenitic stainless steel, this muffler is built for superior corrosion resistance and long-lasting durability. Its reversible design offers installation flexibility, and the 100% welded construction ensures strength.

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The Borla 40357 ProXS is a universal performance muffler constructed from T-304 stainless steel, offering durability and resistance to corrosion. Its design is reversible, allowing for flexible installation options to suit various exhaust system configurations. The muffler has a 2.25-inch offset inlet and a 2.25-inch center outlet, with an oval body measuring 4 inches by 9.5 inches and a body length of 14 inches, resulting in an overall length of 19 inches. This ProXS muffler is specifically noted as being compatible with trucks. Borla, a pioneer in exhaust performance, states that their ProXS mufflers utilize proven, high-performance technology at an affordable price point. The muffler is made in the USA.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Borla ProXS
Part Number	BOR-40357
Category	Exhaust

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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