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Gibson Exhaust 66521 Cat-Back Super Truck Exhaust System Stainless Steel Dual Outlet

(2003 Dodge Ram 1500)

Part of: Gibson Performance Exhaust Super Truck Cat-Back Exhaust System

Other options in this family: Gibson Exhaust 9532 Gibson Exhaust 69517 Gibson Exhaust 65518 Gibson Exhaust 66513 Gibson Exhaust 9516

Manufacturer

Picture for manufacturer Gibson Exhaust

Part Number

66521
13 reviews
Sale Price

$660.18

Estimated ship date Monday, November 16

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Product Details

The Gibson 66521 Super Truck Cat-Back Exhaust System is Gibson's most aggressive exhaust offering, engineered to deliver a bold race truck rumble with real, measurable performance gains. Built from T304 stainless steel with mandrel-bent tubing, this system maximizes exhaust flow and minimizes backpressure from the catalytic converter back.

Dual tailpipes exit cleanly in front of the rear tires, finished with a 6-inch polished T304 stainless oblong slash-cut tip for an aggressive, purposeful look. The patented Superflow™ baffled and chambered muffler design eliminates internal packing for a deep, aggressive tone with minimal interior drone.

Key Features:

  • Dyno-tested average gains of 10–15 horsepower and 15–20 lb-ft of torque
  • Patented Superflow™ muffler — baffled and chambered design with no internal packing
  • Muffler: 7 in. round body; 3.00 in. center inlet; 2.50 in. dual outlets; 19 in. length
  • Mandrel-bent 2.50 in. stainless steel tubing for consistent, unrestricted flow
  • Slip-fit pipe connections reduce backpressure at all joining points
  • Tip: 6 in. polished T304 stainless oblong slash-cut, clamp-on; outlet 6 x 2.75 in.; 6 in. length
  • Dual outlet exit position: in front of rear tires
  • 100% bolt-on installation — no cutting or welding required
  • Backed by Gibson's Lifetime Limited Warranty

Note: This system is not recommended for heavy-duty towing applications. Noise level may exceed the 95-decibel standard.

Products specifications

Fits

2003 Dodge Ram 1500

Tubing Diameter

2.50-in. Stainless mandrel bent tubing.

Muffler Dimension

7 in. Round Body; 3.00 in. Center Inlet; 2.50 in. Dual Outlets; L-19 in.

Muffler Description

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

Material

Stainless

Prop 65

Yes

Tip Description

6in. Polished T304 Stainless Oblong Slash-Cut Tip. Clamp on.

Tip Specifications

Outlet 6 x 2.75 in.; L-6 in.

Outlet

Dual

Exit Position

Exits In Front of Rear Tire.

Category

Truck and SUV

Tip Diameter

6.000 in.

Exit Position

Front of Rear Tire

Exhaust Type

Cat-Back

Muffler Body Length

19.000 in.

Tubing Diameter

2.500 in.

Tail Pipe Diameter

2.500 in.

Inlet Inside Diameter

3.000 in.

Material

Stainless Steel

Good price and easy check out.

best price

Order was fast easy and hopefully successful thank you

we will see

Best price

Overall great shipping info could have been a little sooner not after it was already almost here

I appreciate getting namebrand parts at a good price.

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

Thank you

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.

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