aFe MACHForce XP Exhausts Muffler Delete Aluminized 4 ID In/Out 8 Dia

This aFe exhaust component is the MACHForce XP Exhausts Muffler Delete Aluminized 4 ID In/Out 8 Dia. Verify body style, engine, drivetrain, wheelbase or cab-and-bed configuration, pipe diameter, connection point, tip finish, emissions status, and required hardware.

Key Features

• Mandrel-bent tubing for consistent interior diameter.
• Direct bolt-on using factory mounting points and hangers.
• Reduces backpressure for measurable power and torque gains.
• Aggressive exhaust note without excessive drone at highway speed.
• aFe MACH Force-Xp cat-back exhaust system (49-91003).
• Safely lift and support the vehicle to gain access to the full exhaust system.

Fitment

Specifications

What’s Included

One new aFe catback in the exact configuration and quantity identified by this listing. Hardware, clamps, couplers, gaskets, sensors, wiring, fluids, calibration, and accessories are included only when expressly stated.

About aFe Power

aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.

Important Disclosures

• California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.

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• Shop the complete aFe Power collection

Frequently Asked Questions

Will the MACHForce XP Exhausts Muffler Delete Aluminized 4 ID In/Out 8 Dia fit my my application (aFe 49-91003)?
Match the complete vehicle, engine, drivetrain, cab and bed or wheelbase, body style, factory connection point, and any listed exclusions.

Does installation require cutting or welding?
Requirements depend on the exact system and vehicle. Review aFe’s current instructions before disassembly; some configurations are bolt-on while others require trimming or professional fabrication.

Will this exhaust change sound level?
Sound depends on system type, pipe diameter, resonators, mufflers, engine, and other modifications. Confirm the exact configuration and local sound requirements.

Does this exhaust retain required emissions equipment?
Only when the exact product is designed around the original catalysts, DPF, or other equipment. Confirm current emissions classification before installation.

Installation Instructions

1. Confirm aFe part number 49-91003, the complete vehicle or specification-based application, and all required supporting components.
2. Allow the exhaust to cool, support the vehicle safely, and compare every pipe, hanger, flange, sensor, and included clamp before removing factory parts.
3. Assemble the system loosely from the fixed connection points, align tips and clearances, then tighten hardware in the manufacturer’s sequence.
4. Check for leaks, contact, sensor faults, and loose hardware after the first complete heat cycle.