aFe 49-91002 Mach Force XP 4" 409 SS Performance Muffler (Universal Fit)

Vehicle Fitment

• Universal fit performance muffler - not vehicle specific

Features

• aFe Mach Force XP™ 409 stainless steel performance muffler
• 4" inside-diameter inlet and outlet for high-flow exhaust systems
• Straight-through perforated core with heat-resistant packing for reduced backpressure
• Brushed 409 stainless steel construction for corrosion resistance and long life
• Provides deeper, throaty sound on acceleration with smooth idle tone
• Embossed aFe Power signature logo for premium appearance
• Designed to improve throttle response and overall exhaust flow
• Universal clamp-on design - can be adapted to many custom or aftermarket exhaust systems

Specifications

• Part Number: 49-91002
• Series: Mach Force XP™ Performance Muffler
• Main Tubing Diameter: 4" ID inlet/outlet
• Overall Length: ~30"
• Body Diameter: ~8"
• Material: 409 stainless steel
• Fitment: Universal (not vehicle specific)
• Installation: Clamp-on design - hardware may be required separately

Included Components

• 1x Mach Force XP™ 409 SS Performance Muffler (4" inlet/outlet)

Product Description

The aFe 49-91002 Mach Force XP™ Performance Muffler is a universal-fit muffler designed to upgrade aftermarket exhaust systems on cars, trucks, and SUVs that use 4" diameter exhaust piping. Constructed from corrosion-resistant 409 stainless steel with a straight-through perforated core and heat-resistant packing, this muffler maximizes exhaust flow while producing a deeper, more aggressive sound on acceleration and a smoother, refined tone at idle. Its build quality and performance-oriented design make it an excellent choice for custom exhaust builds or as a replacement component in performance exhaust systems.

The universal clamp-on design allows this muffler to be used on a wide range of vehicles provided the exhaust piping matches the 4" inlet and outlet size. Although not vehicle specific, it's a popular upgrade choice for enthusiasts looking to improve throttle response, reduce backpressure, and achieve a more engaging exhaust note from their setup. Installation requires appropriate clamps and hangers (sold separately) and basic exhaust assembly skills.