aFe MACH Force-Xp Hi-Tuck Cat-Back Exhaust — Jeep Wrangler JK V6

MACH Force-Xp Hi-Tuck cat-back with forward muffler for Wrangler JK V6

The aFe 49-48055 MACH Force-Xp Hi-Tuck cat-back uses 2.5-inch mandrel-bent 409 stainless tubing and one 14-inch straight-through muffler positioned ahead of the rear axle. Its single driver-side Hi-Tuck outlet provides trail clearance without a separate polished decorative tip. The manufacturer expressly notes that slight drone may occur in some applications because of the short muffler.

Key Features

• Selected aFe part 49-48055.
• 2.5-inch mandrel-bent 409 stainless tubing, correcting the former five-inch pipe description.
• One 14-inch high-flow straight-through 409 stainless muffler ahead of the rear axle.
• Single driver-side Hi-Tuck outlet; no separate decorative tip or rear oval muffler is supplied.
• Selected stainless extension, muffler assembly and over-axle section; the shared aluminized system is a separate alternative.
• Factory rubber isolation mounts are retained, with a supplied crossmember hanger bracket, top plate and two screws.
• Current manufacturer covers two- and four-door JK V6 applications and says the extension permits installation without modifications.

Fitment

Exact current manufacturer applications list 2007–2011 JK gas V6 3.8L and 2012–2018 JK gas V6 3.6L. The selected September 2018 guide prints V8 beside the V6 displacements; that header typo does not approve a V8. The complete exact Mont table supports 14 Wrangler scopes through 2017 and eight actual 2018 Wrangler JK names. Three Unlimited ranges extend from 2016 to 2017; the obsolete JK-as-submodel entry and two wrongly named 2018 Wrangler scopes are replaced by actual Wrangler JK model rows. No JL or unrelated engine approval is inferred.

Specifications

What's Included

• The 49-48055 kit includes one stainless muffler assembly 05-144081, one stainless over-axle section 05-144082 and one 22-inch stainless extension 05-144088 for four-door use.
• Three 2.5-inch bands 05-41061, one hanger bracket 05-46163, one top plate 05-46177 and two flanged hex-cap screws 03-50209.
• Retain the original rubber isolation mounts. The aluminized alternatives in the shared diagram are not included.
• No separate decorative tip, EVAP canister, compressor, skid plate, new gasket, heat shield, intake filter, silicone coupling or sensor is established as supplied.

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.

Related Parts

• Exact current manufacturer JK V6 scope and possible drone note
• Selected one-page guide and stainless component diagram
• Complete exact named secondary fitment table
• Shop cat-back exhaust systems
• Shop aFe Power

FAQ

It is the selected 2.5-inch 409 stainless Hi-Tuck cat-back for documented Wrangler JK V6 applications, with one forward 14-inch muffler and a single driver-side outlet.

No. The exact current manufacturer specifies 2.5-inch tubing and a Hi-Tuck outlet. No separate polished decorative tip is established as included.

No. The manufacturer explicitly warns that slight drone may occur in some applications because of the short muffler. It describes the sound qualitatively and provides no selected decibel result.

This selection uses stainless muffler 05-144081, over-axle section 05-144082 and extension 05-144088. The guide’s 05-142xxx aluminized alternatives belong to a separate system.

The diagram identifies the 22-inch extension for four-door models, and step 5 says to install it first on four-door vehicles. No trimming length or cutting operation is printed; the current manufacturer describes installation without modifications.

The selected guide places the hanger bracket at the crossmember where the canister is located, with the top plate above the crossmember and two supplied screws. It does not direct EVAP canister removal or relocation. Compatibility with most aftermarket skid plates is not a guarantee for every accessory.

No numerical torque is printed. The selected guide specifies 1/2–1 inch between the tailpipe and body panels, tightening clamps front to rear after alignment and re-tightening all clamps after 50–100 miles.

No. Current exact manufacturer applications establish 2007–2011 V6 3.8L and 2012–2018 V6 3.6L. The V8 header beside those displacements is a source typo, not an additional engine approval.

Installation Instructions

1. Confirm aFe 49-48055 against the exact vehicle and installed equipment. Inventory the actual components and follow the selected manufacturer instructions and current vehicle service requirements.
2. Read the complete selected one-page guide, confirm the JK V6 application and inventory the stainless components. Let the exhaust cool, wear protective equipment and safely support the vehicle and the original muffler separately. Professional installation is recommended.
3. Remove the factory exhaust from rear toward front, retaining the original rubber isolation mounts. The guide permits lubricating those mounts. Lay out the components and leave all clamps loose until the system is assembled.
4. Install hanger bracket 05-46163 at the crossmember where the EVAP canister is located. Place top plate 05-46177 above the crossmember, align the bracket and two supplied screws, then secure them as shown in Figure A. No EVAP canister removal or relocation is specified.
5. Connect the forward muffler assembly to the factory Y-pipe with the diagrammed 2.5-inch bands and hangers in the retained mounts. Four-door models install the 22-inch extension first. Add the over-axle section and place its hangers in the original rubber mounts.
6. Align all sections and maintain the guide’s 1/2–1 inch tailpipe-to-body clearance. Tighten clamps from front to rear and recheck all work before removing supports. The selected guide supplies no numerical tightening torque.
7. Re-tighten all clamps after 50–100 miles. The guide notes that smoke during the first few startup minutes can occur. No cutting, battery, sensor, compressor, EVAP or heat-shield procedure is borrowed.

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