Looking for aftermarket parts to modify or upgrade your 2003 Toyota 4Runner with catback? At Tunersports.com we carry a huge selection of the top name brand performance catback parts and accessories.

IN STOCK 18708Gibson most popular exhaust is the one you can trust when you want reliable performance from your vehicle. This single exhaust exits straight out the back, complemented with polished Stainless Tip. Hassle free, bolt-on installation with professional looking results. You can expect to experience gain... Gibson 05-09 Toyota 4Runner Sport 4.7L 2.5in Cat-Back Single Exhaust - Aluminized 2003-2009 Toyota 4Runner Sport 2003-2010 Toyota 4Runner Limited / SR5 $429.87 |
SHIPS FROM MANUFACTURER 618708Gibson most popular exhaust is the one you can trust when you want reliable performance from your vehicle. This single exhaust exits straight out the back, complemented with polished Stainless Tip. Hassle free, bolt-on installation with professional looking results. You can expect to experience gain... Gibson 05-09 Toyota 4Runner Limited 4.7L 2.5in Cat-Back Single Exhaust - Stainless 2003-2009 Toyota 4Runner Sport 2003-2010 Toyota 4Runner Limited / SR5 $468.16 |

IN STOCK - DROPSHIPS 106-0075BRExhaust Direct-Fit Replacement Exhaust Kit 106-0075 takes the guesswork out of replacing your exhaust system while providing a reliable and high-quality alternative to the OEM exhaust. You will find all of the gaskets and clamps needed to get the job done in the carefully packaged box. 106-0075’... MagnaFlow BRE Exhaust Kit 03-09 4Runner GX470 2003-2009 Toyota 4Runner Limited / Sport / SR5 $409.00 |

IN STOCK - DROPSHIPS 15781The MagnaFlow 2003-2009 Toyota 4Runner Street Series Cat-Back Performance Exhaust System brings out the personality of your 4.0L, 4.7L 2003-2009 Toyota 4Runner with our signature resonant, powerful engine tone and dyno-proven performance. Thanks to its fast-flowing, mandrel bent 2.5in. main piping a... MagnaFlow Sys C/B Toyota 4-Runner 03 2003-2009 Toyota 4Runner Limited / Sport / SR5 $1,049.00 |
IN STOCK 19544The MagnaFlow® Overland Series™ Cat-Back Performance Exhaust System #19544 for the Lexus GX470 (2003-2009), GX460 (2010-2023) and Toyota 4Runner (2003-2009) adds MagnaFlow®’s signature deep tone and dyno-proven performance to your overlanding rig. The weight optimized exhaust system’s mandre... MagnaFlow 05-09 Toyota 4Runner V8 4.7L / 17-21 Lexus GX460 Overland Series Cat-Back Exhaust 2003-2009 Toyota 4Runner Limited / Sport / SR5 $899.00 |
IN STOCK 19546The MagnaFlow Toyota 4Runner Overland Series Cat-Back Performance Exhaust System #19546 will enhance your 4.0L V6 Toyota 4Runner (2003-2024) with MagnaFlow's renowned deep rumble and dyno-proven performance. MagnaFlow #19546 is weight optimized for additional utility and designed such that its mandr... MagnaFlow 03-21 Toyota 4Runner V6 4.0L Overland Series Cat-Back Exhaust 2003-2009 Toyota 4Runner Sport 2003-2024 Toyota 4Runner Limited / SR5 $912.00 |

IN STOCK S5343304MBRP 04-21 Toyota 4Runner 4.0L 3in T304 Stainless Steel Cat Back Single Side Exit 2003-2009 Toyota 4Runner Sport 2003-2024 Toyota 4Runner Limited / SR5 $599.99 |

IN STOCK S5343ALMBRP 04-21 Toyota 4Runner 4.0L 3in Cat Back Single Side Exit 2003-2009 Toyota 4Runner Sport 2003-2024 Toyota 4Runner Limited / SR5 $374.99 |