
Enhance your 2004.5-2007 5.9 Cummins with the AFE 49-42002 Mach Force XP 4-Inch Cat-Back Exhaust System, designed to deliver maximum performance and improved exhaust flow. Constructed from mandrel-bent piping, this system provides up to 20% more flow than traditional compression-bent systems, boosting horsepower and torque while reducing exhaust gas temperatures. The straight-through, wide-open mufflers are engineered for high flow, free from baffles or chambers, minimizing the risk of resonation and providing a smooth, powerful exhaust tone.
This system is specifically tuned for your Cummins truck to deliver optimal performance when paired with AFE air intake filters, ensuring ultimate power gains. Featuring OEM-style bayonet hangers and high-quality band clamps, the Mach Force XP exhaust ensures a secure fit and a superior seal. Backed by a 2-year warranty, this system offers both reliability and durability for long-term performance.
Key Features:
- Mandrel-Bent 4-Inch Piping for 20% higher exhaust flow, boosting power and reducing EGTs.
- Straight-Through Muffler Design for maximum flow and minimal resonation.
- Tuned for Cummins Engines to deliver optimal power gains when paired with AFE air intakes.
- OEM-Style Bayonet Hangers and high-quality band clamps for a secure fit and better seal.
- 2-Year Warranty for added peace of mind.
Upgrade your truck’s exhaust system with the AFE 49-42002 Mach Force XP 4-Inch Cat-Back Exhaust System and experience enhanced performance, sound, and durability.

Enhance your 2004.5-2007 5.9 Cummins with the AFE 49-42002 Mach Force XP 4-Inch Cat-Back Exhaust System, designed to deliver maximum performance and improved exhaust flow. Constructed from mandrel-bent piping, this system provides up to 20% more flow than traditional compression-bent systems, boosting horsepower and torque while reducing exhaust gas temperatures. The straight-through, wide-open mufflers are engineered for high flow, free from baffles or chambers, minimizing the risk of resonation and providing a smooth, powerful exhaust tone.
This system is specifically tuned for your Cummins truck to deliver optimal performance when paired with AFE air intake filters, ensuring ultimate power gains. Featuring OEM-style bayonet hangers and high-quality band clamps, the Mach Force XP exhaust ensures a secure fit and a superior seal. Backed by a 2-year warranty, this system offers both reliability and durability for long-term performance.
Key Features:
Mandrel-Bent 4-Inch Piping for 20% higher exhaust flow, boosting power and reducing EGTs.
Straight-Through Muffler Design for maximum flow and minimal resonation.
Tuned for Cummins Engines to deliver optimal power gains w[...]
Enhance your 2004.5-2007 5.9 Cummins with the AFE 49-42002 Mach Force XP 4-Inch Cat-Back Exhaust System, designed to deliver maximum performance and improved exhaust flow. Constructed from mandrel-bent piping, this system provides up to 20% more flow than traditional compression-bent systems, boosting horsepower and torque while reducing exhaust gas temperatures. The straight-through, wide-open mufflers are engineered for high flow, free from baffles or chambers, minimizing the risk of resonation and providing a smooth, powerful exhaust tone.
This system is specifically tuned for your Cummins truck to deliver optimal performance when paired with AFE air intake filters, ensuring ultimate power gains. Featuring OEM-style bayonet hangers and high-quality band clamps, the Mach Force XP exhaust ensures a secure fit and a superior seal. Backed by a 2-year warranty, this system offers both reliability and durability for long-term performance.
Key Features:
- Mandrel-Bent 4-Inch Piping for 20% higher exhaust flow, boosting power and reducing EGTs.
- Straight-Through Muffler Design for maximum flow and minimal resonation.
- Tuned for Cummins Engines to deliver optimal power gains when paired with AFE air intakes.
- OEM-Style Bayonet Hangers and high-quality band clamps for a secure fit and better seal.
- 2-Year Warranty for added peace of mind.
Upgrade your truck’s exhaust system with the AFE 49-42002 Mach Force XP 4-Inch Cat-Back Exhaust System and experience enhanced performance, sound, and durability.