
Xtreme, Sport / 2.5 in Cat-Back 4.5 in Single Tips | 2011-21 Jeep Grand Cherokee 5.7L (21187, 14991)
VEHICLE FITMENT
2011-2021 Jeep Grand Cherokee 5.7L V8
Standard
Laredo
Overland
Overland Summit
TrailHawk
*For Summit Edition or similar see Part # 14992
**Will Not Fit Vehicles With Factory Equipped Rear Tow Hook
PRODUCT DESCRIPTION
2.5" Cat-Back, Dual Rear Exit with Single 4.5" Polished Pro-Series Tips
Xtreme Sound Level
Part # 21187
*For best driving results turn off "ECO" mode or Tune out 4 cylinder "ECO" mode.
Sport Sound Level
Part # 14991
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|
|---|---|---|
| Sound Level | 📹 Xtreme |
📹 Sport |
| Pipe Dia. | 2.5" |
2.5" |
| Exit Style | Dual Rear |
Dual Rear |
| Tip Style | Single 4.5" | Single 4.5" |
| Tip Cut | Slash Cut |
Slash Cut |
| HP | +8 | +8 |
| Lbs ft TQ | +12 | +12 |
| RSC® | ✓ | ✓ |
| Flow Increase | 63% | 63% |
| Decibels (dB) over Stock | +20 under acceleration |
+12 under acceleration |
| Weight Savings | -18 LBS | -13 LBS |
|
Polished Black |
INSTALLATION & INFO
*For best driving results with Xtreme sound level turn off "ECO" mode or Tune out 4 cylinder "ECO" mode.
YEARS: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Original: $1,799.99
-70%$1,799.99
$540.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
VEHICLE FITMENT
2011-2021 Jeep Grand Cherokee 5.7L V8
Standard
Laredo
Overland
Overland Summit
TrailHawk
*For Summit Edition or similar see Part # 14992
**Will Not Fit Vehicles With Factory Equipped Rear Tow Hook
PRODUCT DESCRIPTION
2.5" Cat-Back, Dual Rear Exit with Single 4.5" Polished Pro-Series Tips
Xtreme Sound Level
Part # 21187
*For best driving results turn off "ECO" mode or Tune out 4 cylinder "ECO" mode.
Sport Sound Level
Part # 14991
![]() |
![]() |
|
|---|---|---|
| Sound Level | 📹 Xtreme |
📹 Sport |
| Pipe Dia. | 2.5" |
2.5" |
| Exit Style | Dual Rear |
Dual Rear |
| Tip Style | Single 4.5" | Single 4.5" |
| Tip Cut | Slash Cut |
Slash Cut |
| HP | +8 | +8 |
| Lbs ft TQ | +12 | +12 |
| RSC® | ✓ | ✓ |
| Flow Increase | 63% | 63% |
| Decibels (dB) over Stock | +20 under acceleration |
+12 under acceleration |
| Weight Savings | -18 LBS | -13 LBS |
|
Polished Black |
INSTALLATION & INFO
*For best driving results with Xtreme sound level turn off "ECO" mode or Tune out 4 cylinder "ECO" mode.
YEARS: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021



