My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Gibson 18705 Cat-Back Single Exhaust System Aluminized Steel

(2001-2004 Toyota Tacoma)

Part of: Gibson Performance Single Side Cat-Back Exhaust System

Other options in this family: Gibson Exhaust 619995 Gibson Exhaust 319675 Gibson Exhaust 315536 Gibson Exhaust 618815B Gibson Exhaust 315599

Manufacturer

Picture for manufacturer Gibson Exhaust

Part Number

18705
5 reviews
Sale Price

$461.66

Estimated ship date Monday, November 16

Check out with

ApplePay
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 18705 Cat-Back Single Side Exhaust System is engineered for truck and SUV owners seeking maximum low-end power, improved towing capacity, and a more aggressive exhaust note. The system exits behind the rear tire for a clean, factory-integrated appearance while delivering measurable performance gains over the stock exhaust.

Dyno testing demonstrates horsepower gains averaging 10–15 hp and torque increases of 15–20 lb-ft, with peak power gains concentrated in the low-to-mid RPM range (1,800–3,000 RPM) where towing, hill climbing, and passing power matter most. The design also results in a quieter in-cab experience compared to competing performance exhaust systems.

Key Features:

  • Bolt-on, no-weld installation for a hassle-free, professional-quality fit
  • Baffled and chambered muffler design with no internal packing for minimal interior drone and an aggressive exterior sound
  • Exhaust exits behind the rear tire for a clean, stock-appearing finish
  • Optimized for low-end torque delivery — ideal for towing, hauling, and hill climbing
  • Backed by Gibson's Lifetime Limited Warranty

Muffler Specifications:

  • Shape: 6 in. Round
  • Inlet: 2.50 in. Offset
  • Outlet: 2.50 in. Offset
  • Length: 19 in.

Tip Specifications:

  • Style: 3 in. Round Slash-Cut, Polished T304 Stainless Steel — Clamp-On
  • Inlet: 2.50 in.
  • Outlet: 3 in.
  • Length: 8 in.

Constructed from aluminized steel, the Gibson 18705 offers durable corrosion resistance at an accessible price point. The complete bolt-on system includes all necessary hardware for a straightforward installation with no cutting or welding required.

Products specifications

Fits

2001-2004 Toyota Tacoma

Tubing Diameter

2.50-in. Aluminized mandrel bent tubing.

Muffler Dimension

6 in. Round; 2.50in. Offset Inlet; 2.50in. Offset Outlet; L-19 in.

Muffler Description

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

Material

Aluminized

Prop 65

Yes

Exit Position

Exits Behind Rear Tire.

Outlet

Single

Tip Specifications

Inlet 2.50 in.; Outlet 3 in.; L-8 in.

Tip Description

3in. Polished T304 Stainless. Round Slash-Cut Tip. Clamp on.

Category

Truck and SUV

System Type

Cat Back

Tail Pipe Diameter

2.500 in.

Tip Diameter

3.000 in.

Inlet Inside Diameter

2.500 in.

Outlet Outside Diameter

2.500 in.

Exit Style

Straight

Exhaust Type

Cat-Back

Muffler Type

Chambered

Exit Position

Rear Side

Muffler Body Length

19.000 in.

Tip Logo

None

Tubing Diameter

2.500 in.

I called in to ensure the part was in stock and the rep advised it was. Hopefully it is and this will make a great experience.

Price is good. Hope shipping is quick also. Thanks

I ordered a set of inner tie rods for my car from Autoplicity and found their prices to be the lowest online for the brand I was looking for. Items were ship out in 2 business days from the original manufacturer. Shipping prices were kind of on the expensive end considering the package size and weight so if Autoplicity adjust their shipping prices to be more competitive, I think their service and pricing would be hard to beat!

great

Very pleased with product and shipping prices. Best price on the internet.Took a few to many days between order placement and shipping. Once the product was shipped the timing was very good.Talked with support-they were helpful and friendly.

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