My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Gibson Exhaust 615511 Cat-Back Single Exhaust System Stainless Steel

(1999-2000 Chevrolet K2500; 1996-2000 Chevrolet C3500; 1999-2000 Chevrolet C2500; 1996-2000 Chevrolet K3500; 1999-2000 GMC K2500 + 3 more models)

Manufacturer

Part Number

615511
Sale Price

$866.73

Estimated ship date Wednesday, November 18

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Gibson Exhaust 615511 Cat-Back Single Exhaust System delivers exceptional performance gains with a bolt-on installation that requires no welding. Engineered for improved acceleration, towing capacity, and passing power, this stainless steel exhaust system maximizes torque and horsepower in the low-end RPM range where it matters most for truck and SUV applications.

Performance Benefits:

  • Dyno-tested performance gains: average 10-15 horsepower and 15-20 lb-ft of torque increase
  • Optimized for low-end power delivery (1800-3000 RPM) for superior towing and acceleration
  • Single side exit design behind rear tire for clean, aggressive appearance
  • Minimal cabin drone for quieter interior compared to other performance exhaust systems

Muffler Specifications:

  • Baffled and chambered design with no internal packing for long-lasting performance
  • Aggressive exhaust tone without excessive interior noise
  • 8-inch round body construction
  • Dual 2.5-inch inlets and 3-inch offset outlet
  • 24-inch overall muffler length

Exhaust Tip Details:

  • 3.5-inch polished T304 stainless steel round slash-cut tip
  • Clamp-on installation for easy replacement
  • 3-inch inlet, 3.5-inch outlet, 12-inch length

This complete cat-back system features durable stainless steel construction and hassle-free bolt-on installation with professional-grade results. Backed by Gibson's Lifetime Limited Warranty for peace of mind.

Products specifications

Fits

1999-2000 Chevrolet K2500; 1996-2000 Chevrolet C3500; 1999-2000 Chevrolet C2500; 1996-2000 Chevrolet K3500; 1999-2000 GMC K2500; 1996-2000 GMC C3500; 1996-2000 GMC K3500; 1999-2000 GMC C2500

Tubing Diameter

3-in. Stainless mandrel bent tubing.

Muffler Dimension

8 in. Round Body; 2.50 in. Dual Inlet; 3 in. Offset Outlet; L-24 in.

Muffler Description

Baffled and Chambered Muffler Design, No internal Packing, Minimal Interior Drone, Aggressive Sound

Material

Stainless

Tip Specifications

Inlet 3in.; Outlet 3.5in.; L-12in.

Prop 65

Yes

Tip Description

3.5in. Polished T304 Stainless. Round Slash-Cut Tip. Clamp on.

Exit Position

Exits Behind Rear Tire.

Outlet

Single

Category

Truck and SUV

Tail Pipe Diameter

3.000 in.

Muffler Body Length

24.000 in.

Tubing Diameter

3.000 in.

Tip Diameter

3.500 in.

Exit Position

Behind Rear Tire

Material

Stainless Steel

Exhaust Type

Cat-Back

Inlet Inside Diameter

2.500 in.

They had an item that was somewhat hard to find at a reasonable price. Glad I found them.

Good

The company that makes this product has a non iPhone friendly interface. Autoplicity was easy to navigate using mobile.

The best prices and fast shipping!

Absolutely the best bargain you'll find! Don't pay retail mark up at the parts store, buy at Autoplicity and know you're saving money.<br>.

great service, even better price! Would recommend Autoplicity to anyone.

Easy website to shop on. Good phone support. Package will be arriving in a timely manner. All in all seems like a good company.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy