The aFe 49-48053 MACH Force-Xp cat-back uses 3-inch mandrel-bent 409 stainless tubing, an X-pipe balance section and two high-flow muffler assemblies. MIG-welded construction and retained factory exhaust tips provide an original-style rear appearance. Current exact manufacturer applications establish SRT 6.4L for 2014–2021, SRT8 6.4L for 2012–2013 and supercharged Trackhawk 6.2L for 2018–2021.
The complete current manufacturer applications explicitly establish SRT 2014–2021 gas V8 6.4L, SRT8 2012–2013 gas V8 6.4L and Trackhawk 2018–2021 gas V8 6.2L supercharged. The selected March 2021 guide is headed 6.4L only; the current exact manufacturer separately establishes Trackhawk scope. The selected complete named secondary table agrees through 2021. Existing 2022 SRT legacy data is retained but UNVERIFIED; no new 2022 mapping or physical approval is inferred from the older entry. The overlapping existing SRT ranges are represented by their original year union without changing any supported year or tag.
| Years | Make | Model | Submodel | Application / source qualification |
|---|---|---|---|---|
| 2014–2021 | Jeep | Grand Cherokee | SRT | Current exact manufacturer and selected complete named table: gas V8 6.4L. |
| 2022 | Jeep | Grand Cherokee | SRT | Legacy year retained UNVERIFIED; current exact manufacturer and selected table stop at 2021. No new 2022 fitment is inferred; confirm with aFe before purchase or installation. |
| 2012–2013 | Jeep | Grand Cherokee | SRT8 | Current exact manufacturer and selected complete named table: gas V8 6.4L. |
| 2018–2021 | Jeep | Grand Cherokee | Trackhawk | Current exact manufacturer explicitly lists gas V8 6.2L supercharged; this is not borrowed from another engine. |
| Detail | Value |
|---|---|
| Manufacturer Part Number | 49-48053 |
| Product type | Catback |
| System | 3-inch mandrel-bent 409 stainless MIG-welded cat-back, X-pipe balance section and dual high-flow mufflers. |
| Selected assemblies | X-pipe 05-144038, left muffler assembly 05-144039 and right muffler assembly 05-144040. No 304 stainless sibling components are substituted. |
| Diagrammed clamps | Two 3-inch bands 05-41055 and two ball-joint tip clamps 05-41284. The original exhaust tips are reused. |
| Flange hardware / mounts | Reuse the factory flange spring nuts and transfer the original mid-pipe mounts. Step 6 mentions provided aFe hardware without a formal part number or count in this diagram; confirm the actual packing list rather than borrowing another system’s bolt bill. |
| Selected guide | One page, all 15 steps and complete diagram; document 06-86124, March 2021, headed WK2 SRT/SRT8 V8 6.4L. Current exact manufacturer applications separately include Trackhawk 6.2L supercharged. |
| Ground strap / tip sequence | Disconnect the rear factory ground strap during removal and reattach it to the right-side muffler hanger at step 8. The diagram includes two tip clamps, but step 11 expressly mentions the right muffler only; confirm the corresponding left-side tip installation with the installer/aFe rather than inventing an omitted step. |
| Tightening / clearance | No numerical torque is printed. The guide specifies 1/2–1 inch tailpipe-to-body clearance, adjustment before final tightening, a tightness recheck and re-tightening all exhaust components after 50–100 miles. |
| Power / sound / emissions | Manufacturer claims up to 21 hp and 35 lb-ft, but the selected chart, test vehicle, RPM and conditions are unlocated. X-pipe drone reduction is a design claim, not a measured decibel result or universal drone-free guarantee. Manufacturer states no CARB EO number is required; this is not blanket complete-vehicle approval. |
| UPC | 802959497562 |
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
It is a 3-inch 409 stainless cat-back with an X-pipe and two mufflers for documented Grand Cherokee SRT/SRT8 and Trackhawk applications, retaining the factory exhaust tips.
Are new exhaust tips included?No. The current manufacturer explicitly retains the factory tips, and the selected diagram supplies two ball-joint tip clamps for their reuse. New black or polished decorative tips are not included.
Does this selection have welded-on resonators?The exact current selection specifies an X-pipe and two high-flow mufflers. Additional welded-on resonators are not established for this 409 stainless system; components from another selection are not borrowed.
Is Trackhawk 6.2L fitment inferred from the 6.4L guide?No. The current exact manufacturer separately lists 2018–2021 Grand Cherokee Trackhawk gas V8 6.2L supercharged. The selected March 2021 installation guide is headed 6.4L, so any unresolved Trackhawk-specific procedural detail requires aFe confirmation.
Is the existing 2022 SRT entry verified?No. The current exact manufacturer and complete selected named table stop at 2021. The existing 2022 legacy year is retained as explicitly unverified and requires confirmation before purchase or installation.
Which ground strap and mounting parts must be retained?Transfer the original mid-pipe mounts and reuse factory flange spring nuts. Disconnect the rear exhaust ground strap for removal and reconnect it to the right-side muffler hanger at step 8. This is not a battery-disconnection instruction.
Are the 21 hp and 35 lb-ft gains independently verified here?No. They are the manufacturer’s in-house claims. The selected chart, test vehicle, modifications, RPM and test conditions were not located, so the figures are not guaranteed gains for every supported vehicle.
What torque, clearance and follow-up are printed?The selected guide prints no numerical torque. It specifies 1/2–1 inch between tailpipe and body panels, alignment before final tightening, a tightness recheck and re-tightening all exhaust components after the first 50–100 miles.
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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