Kooks 11304300 3" 304SS Cat-Back Exhaust w/ 4" Tips for 05-09 Mustang GT/GT500

Vehicle Fitment

• 2005-2009 Ford Mustang GT 4.6L 3V V8
• 2007-2009 Ford Shelby GT500 5.4L 4V Supercharged V8

Fitment Notes

• Does NOT connect to OEM exhaust
• Requires Kooks mid-pipe with 3" outlet (sold separately)
• Compatible Kooks X-pipes (3" out): 11313120 (off-road), 11313220 (catted), 11313320 (GREEN catted)
• Compatible Kooks H-pipes (3" out): 11313420 (off-road), 11313520 (catted), 11313620 (GREEN catted)
• Mid-pipes with 2-1/2" outlet are OEM-connect only -- NOT compatible
• Does NOT fit V6 models
• Not CARB legal -- no EO number

Features

• Kooks 3" cat-back exhaust system
• 16GA 304 stainless steel mandrel-bent tubing
• Kooks polished stainless oval mufflers
• 4" polished stainless steel tips
• Aggressive Kooks exhaust tone
• Handcrafted in the USA
• ISO 9001:2015 certified manufacturing

Specifications

• Part Number: 11304300
• Brand: Kooks Headers and Exhaust
• Type: Cat-back exhaust system
• Tubing Diameter: 3"
• Tubing Gauge: 16GA
• Material: 304 stainless steel
• Construction: Mandrel bent
• Muffler: Kooks polished stainless oval
• Tip Size: 4"
• Tip Finish: Polished stainless steel
• UPC: 842422124755
• Country of Origin: USA (Statesville, NC)
• Warranty: Limited lifetime (original purchaser)

Included Components

• Kooks 3" cat-back exhaust with polished oval mufflers
• 4" polished stainless steel exhaust tips
• Exhaust clamps

Product Description

The Kooks 11304300 is a 3" cat-back exhaust system for the 2005-2009 Ford Mustang GT 4.6L 3V and 2007-2009 Shelby GT500 5.4L supercharged V8. Constructed from 16-gauge 304 stainless steel with mandrel-bent tubing, this system pairs Kooks polished stainless oval mufflers with 4" polished stainless tips for that signature fat, aggressive Kooks exhaust tone. This cat-back does not connect to the factory exhaust -- it requires a Kooks X-pipe or H-pipe with a 3" outlet, such as the 11313120 (off-road X), 11313220 (catted X), 11313420 (off-road H), or 11313520 (catted H).

When combined with Kooks long-tube headers and a matching 3"-outlet mid-pipe, the system creates a fully optimized exhaust path for significant power gains with proper tuning. Handcrafted at Kooks' ISO 9001:2015 certified facility in Statesville, North Carolina. Race-proven across NHRA, NMRA, NASCAR, and SCCA competition.