Looking for aftermarket parts to modify or upgrade your Hummer H3 with catback? At Tunersports.com we carry a huge selection of the top name brand performance catback parts and accessories for your H3.
Whether you have a 2006 or 2010 Hummer H3 in Adventure to X trim we have you covered. We have 12 catback available to mod your H3. All parts have free shipping to the Continental US 48 States.
 OUT OF STOCK 14212CORSAs Patented Reflective Sound Cancellation® (RSC) Technology allows acoustic engineers to create a drone free exhaust sound, styled specifically to fit the personality of your vehicle. Each system is designed to increase vehicle performance, deliver an AGGRESSIVE SOUND under acceleration and a D... Corsa 06-08 Hummer H3 3.5L Polished Sport Cat-Back Exhaust 2006-2008 Hummer H3 Base 2007-2008 Hummer H3 X $1,781.99 |
 OUT OF STOCK 14212BLKCORSAs Patented Reflective Sound Cancellation® (RSC) Technology allows acoustic engineers to create a drone free exhaust sound, styled specifically to fit the personality of your vehicle. Each system is designed to increase vehicle performance, deliver an AGGRESSIVE SOUND under acceleration and a D... Corsa 06-08 Hummer H3 3in Cat-Back Dual Rear w Single 4in Black Pro-Series Tips 2006-2008 Hummer H3 Base 2007-2008 Hummer H3 X $1,817.99 |
 SHIPS FROM MANUFACTURER 62210For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains.... Gibson 07-10 Hummer H3 Base 3.7L 2.5in Cat-Back Dual Extreme Exhaust - Stainless 2006-2010 Hummer H3 Base 2007-2007 Hummer H3 X $652.28 |
 SHIPS FROM MANUFACTURER 62211For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains.... Gibson 08-10 Hummer H3 Alpha 5.3L 2.5in Cat-Back Dual Extreme Exhaust - Stainless 2008-2010 Hummer H3 Alpha 2009-2009 Hummer H3 Championship Series $652.28 |
 SHIPS FROM MANUFACTURER 312700For the enthusiast who wants an awesome look and aggressive throaty sound this Dual Split Cat back exhaust is for you. Gibson Exhaust Systems decrease backpressure and produce more torque and increased horsepower. Typical gains average of 15-20 horsepower. Stainless dual Tip exit straight out the ba... Gibson 07-10 Hummer H3 Base 3.7L 2.5in Cat-Back Dual Split Exhaust - Aluminized 2006-2010 Hummer H3 Base 2007-2007 Hummer H3 X $523.50 |
 SHIPS FROM MANUFACTURER 612700For the enthusiast who wants an awesome look and aggressive throaty sound this Dual Split Cat back exhaust is for you. Gibson Exhaust Systems decrease backpressure and produce more torque and increased horsepower. Typical gains average of 15-20 horsepower. Stainless dual Tip exit straight out the ba... Gibson 07-10 Hummer H3 Base 3.7L 2.5in Cat-Back Dual Split Exhaust - Stainless 2006-2010 Hummer H3 Base 2007-2007 Hummer H3 X $652.28 |
 SHIPS FROM MANUFACTURER 612701For the enthusiast who wants an awesome look and aggressive throaty sound this Dual Split Cat back exhaust is for you. Gibson Exhaust Systems decrease backpressure and produce more torque and increased horsepower. Typical gains average of 15-20 horsepower. Stainless dual Tip exit straight out the ba... Gibson 08-10 Hummer H3 Alpha 5.3L 2.5in Cat-Back Dual Split Exhaust - Stainless 2008-2010 Hummer H3 Alpha 2009-2009 Hummer H3 Championship Series $652.28 |
 SHIPS FROM MANUFACTURER 312800Gibson 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 07-10 Hummer H3 Base 3.7L 2.5in Cat-Back Single Exhaust - Aluminized 2006-2010 Hummer H3 Base 2007-2007 Hummer H3 X $437.82 |
 SHIPS FROM MANUFACTURER 612800Gibson 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 07-10 Hummer H3 Base 3.7L 2.5in Cat-Back Single Exhaust - Stainless 2006-2010 Hummer H3 Base 2007-2007 Hummer H3 X $574.30 |
 SHIPS FROM MANUFACTURER 612801Gibson 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 08-10 Hummer H3 Alpha 5.3L 3in Cat-Back Single Exhaust - Stainless 2008-2010 Hummer H3 Alpha 2009-2009 Hummer H3 Championship Series $574.30 |
 IN STOCK - LOW 16630Made in the USA and engineered to last, for those seeking increased performance and better economy, MagnaFlow MF Series Performance Exhaust systems deliver the smooth deep sound you want and the wide-open performance power you need. Our exhaust systems feature straight-through flow designs for the u... MagnaFlow Sys C/B 05 Hummer H3 3.5L 2006-2010 Hummer H3 Base 2007-2009 Hummer H3 X 2008-2009 Hummer H3 Adventure / Luxury $938.00 |
 IN STOCK - LOW 16832Made in the USA and engineered to last, for those seeking increased performance and better economy, MagnaFlow MF Series Performance Exhaust systems deliver the smooth deep sound you want and the wide-open performance power you need. Our exhaust systems feature straight-through flow designs for the u... MagnaFlow Sys C/B 08 Hummer H3 5.3L V8 2008-2010 Hummer H3 Alpha 2009-2009 Hummer H3 Championship Series $938.00 |