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SKU: 618806 / UPC: 677418014655
The Gibson 618806 cat back single exhaust upgrades the performance of your 1995 to 1998 Toyota T100 SR5 3.4L Extended Cab. This stainless system from Gibson delivers stronger low end torque and horsepower while keeping cabin noise comfortable. The Gibson 618806 uses 2.5 inch 409 stainless mandrel bent tubing and the signature SuperFlow chambered muffler for real gains you can feel on the highway, when towing, or climbing hills.
Key Features
- Made in the USA by Gibson Performance Exhaust
- Dyno tested gains of 10 to 15 horsepower and 15 to 20 lb ft of torque on the T100 3.4L, strongest between 1,800 and 3,000 RPM
- 2.5 inch 409 stainless mandrel bent tubing maintains full diameter through every bend
- SuperFlow baffled and chambered muffler with no internal packing, nothing to blow out or degrade
- Polished T304 stainless 3.5 inch round slash cut clamp on tip
- Exits behind the rear tire in the factory location
- Complete bolt on installation with factory style hangers and all hardware included, no welding required
- Lifetime Limited Warranty
Specifications
| Specification | Value |
|---|---|
| SKU | 618806 |
| UPC | 677418014655 |
| Brand | Gibson Performance Exhaust |
| System Type | Cat Back Single Exhaust |
| Series | SuperFlow Single Stainless |
| Tubing Material | 409 Stainless Steel |
| Tubing Diameter | 2.5 inch mandrel bent |
| Muffler | SuperFlow baffled and chambered, no internal packing, 6 inch round, 19 inch body length, 2.5 inch offset inlet and outlet |
| Tip | Single polished T304 stainless, 3.5 inch round slash cut, clamp on, 2.5 inch inlet, 6.5 inch length |
| Exit Position | Behind rear tire |
| Hardware Included | Yes, all factory style hangers and clamps |
| Installation | Bolt on, no welding required |
| Weight | 37 lbs |
| Origin | Made in USA |
| Warranty | Lifetime Limited Warranty |
What's Included
- Complete Gibson 618806 cat back exhaust system
- SuperFlow muffler
- All 2.5 inch 409 stainless mandrel bent pipes
- Polished 3.5 inch T304 stainless slash cut tip
- Factory style hangers and all required clamps and hardware
Product Notes
The Gibson 618806 is designed specifically for 1995 to 1998 Toyota T100 3.4L V6 models with the Extended Cab and 76.1 inch (6 ft 4.1 in) bed. It does not fit Regular Cab T100 models or any T100 with the 2.7L 4 cylinder engine. The 3.4L V6 was introduced for the 1995 model year. If your T100 has a spare tire larger than 16 inches, the spare may need to be loosened and shifted rearward for installation clearance on the over axle pipe. This is a true cat back system that retains the factory catalytic converter.
This Part Fits
| Year | Make | Model | Trim / Configuration | Engine | Notes |
|---|---|---|---|---|---|
| 1995 | Toyota | T100 | Extended Cab, 76.1 in bed (SR5 and DX) | 3.4L V6 | Confirmed fit per Gibson application data |
| 1996 | Toyota | T100 | Extended Cab, 76.1 in bed (SR5 and DX) | 3.4L V6 | Confirmed fit per Gibson application data |
| 1997 | Toyota | T100 | Extended Cab, 76.1 in bed (SR5 and DX) | 3.4L V6 | Confirmed fit per Gibson application data |
| 1998 | Toyota | T100 | Extended Cab, 76.1 in bed (SR5 and Base) | 3.4L V6 | Confirmed fit per Gibson application data |
Why Choose Gibson?
Gibson Performance Exhaust builds systems that deliver measurable results on real trucks like the Toyota T100. The Gibson 618806 gives you stronger low end torque for towing and passing while the SuperFlow chambered design keeps cabin noise comfortable. Every pipe is mandrel bent 409 stainless for long term durability. When you choose the Gibson 618806 you get American made quality, straightforward bolt on installation, and a lifetime limited warranty that protects your investment.
Frequently Asked Questions
- Does the Gibson 618806 fit my 1995 to 1998 Toyota T100 SR5 3.4L Extended Cab? Yes. The Gibson 618806 is confirmed to fit all 1995 through 1998 Toyota T100 3.4L V6 models with the Extended Cab and 76.1 inch bed.
- Does the Gibson 618806 fit Regular Cab or 2.7L T100 models? No. This system is engineered specifically for the Extended Cab T100 with the 3.4L V6 and 76.1 inch bed. Regular Cab models and 2.7L 4 cylinder T100s require different part numbers.
- What is the difference between Gibson 618806 and 18806? Both systems share the same fitment, pipe routing, muffler, and tip on the Toyota T100 3.4L Extended Cab. The 618806 uses 409 stainless tubing throughout for superior corrosion resistance. The 18806 uses aluminized steel and costs less. Both carry Gibson's Lifetime Limited Warranty and are made in the USA.
- How much power does the Gibson 618806 add to a T100 3.4L? Dyno testing shows gains of 10 to 15 horsepower and 15 to 20 lb ft of torque, with the strongest improvements in the 1,800 to 3,000 RPM range where towing and highway passing happen.
- Does the Gibson 618806 produce drone on the highway? The SuperFlow muffler is baffled and chambered with no internal packing. This design delivers an aggressive exhaust note while keeping in cab resonance and highway drone lower than many competing systems.
- Is the Gibson 618806 legal in all 50 states? Yes. As a cat back system installed after the catalytic converter, the Gibson 618806 does not modify emissions equipment and is legal in all 50 states.
- Will installing the Gibson 618806 void my factory warranty? No. Under the Magnuson Moss Warranty Act, installing an aftermarket cat back exhaust like the Gibson 618806 cannot void your factory warranty unless it is proven to be the direct cause of a failure.
- What warranty does Gibson offer on the 618806? Gibson covers the 618806 with a Lifetime Limited Warranty. Full terms are available on the Gibson Performance website.
- How long does installation take on a T100? On a stock vehicle the Gibson 618806 installs in approximately 1 to 2 hours with basic hand tools. It connects at the factory converter outlet and uses existing rubber grommets and hanger locations. No welding or cutting is required.
Shipping & Handling
This item ships via standard ground shipping. Professional installation is recommended for proper fitment and performance. Inspect all components upon arrival.
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