Will this work on a 2001 Silverado 2500hd 8.1L that already has a borla exhaust

Nope, the exhaust cfm of a 496 needs 3" duals to have less back pressure.

I would assume so, if the pipes were the same size and there was enough room for the muffler. I would suggest contacting Borla

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400286 ProXS Universal Perf. Muffler 2.5" Dual Inlet / 2.5" Dual Outlet" x 9.5" Oval x 19" Long Body 24" Overall Length Reversible Design Onternal X-Pipe T-304 Stainless Steel

Product ID: 717308

Details

Brand
Borla
Configuration
Dual/Dual
Item Weight
12 Pounds
Material
Stainless
Vehicle Service Type
Car

🔥Max Flow for Increased Power

🔧T-304 Stainless Steel Durability

🇺🇸Proudly Made in USA

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Description

🔥 Unleash the roar of precision engineering with Borla ProXS! 🔧

ENGINEERED FOR POWER - Independent tests confirm maximum flow capability, boosting horsepower and torque for larger engines.
REVERSIBLE OVAL BODY - 19" long reversible design offers versatile installation options to fit your custom setup.
ALL WELDED CONSTRUCTION - Precision all-welded build ensures durability and leak-free performance under extreme conditions.
DUAL INLET OUTLET DESIGN - Optimized 2.5" dual inlet and outlet configuration for superior exhaust flow and aggressive sound.
RACE READY STAINLESS STEEL - Crafted from premium T-304 stainless steel for unmatched corrosion resistance and longevity.

The BORLA 400286 ProXS Universal Performance Muffler features a robust T-304 stainless steel construction with a reversible 19" oval body and dual 2.5" inlet/outlet design. Made in the USA, this all-welded muffler is engineered for maximum exhaust flow, enhancing horsepower and torque, especially for larger engines. Its weld-on installation and un-notched necks provide a secure, leak-free fit, making it a top choice for performance enthusiasts seeking durability and power.

Specifications

ASIN	B003D4OMLI
Best Sellers Rank	#179,710 in Automotive ( See Top 100 in Automotive ) #139 in Automotive Replacement Exhaust Mufflers
Brand Name	Borla
Compatible with Vehicle Type	Car
Configuration	Dual/Dual
Customer Reviews	4.4 4.4 out of 5 stars (328)
Global Trade Identification Number	00808422002868
Included Components	Muffler
Item Weight	12 Pounds
Manufacturer	BORLA
Manufacturer Part Number	400286
Manufacturer Warranty Description	Manufacturer warranty
Material Type	Stainless Steel
Model Number	400286
OEM Equivalent Part Number	400286
Shape	Rectangular
UPC	808422002868

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€ 782.40

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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