
Xtreme, Sport / 3.0 in Cat-Back 4.0 in Twin Tips | 2018-2023 Mustang GT Coupe (21040, 21042)
VEHICLE FITMENT
2018-2023 Ford Mustang GT 5.0L V8
Fastback (No Valves)
*For vehicles without Active Valve exhaust
PRODUCT DESCRIPTION
3.0" Cat-Back, Dual Rear Exit with Twin 4.0" Polished Pro-Series Tips
Xtreme Sound Level - Part Number 21040
+5HP +4TQ
+48% Flow
-9lbs Weight Savings
Sport Sound Level - Part Number 21042 Recommended for pairing with aggressive engine modification
+5HP +4TQ
+48% Flow
-4lbs Weight Savings
INSTALLATION
Xtreme 21040 Installation Instructions
Sport 21042 Installation Instructions
YEARS: 2018, 2019, 2020, 2021, 2022, 2023
Original: $1,999.99
-70%$1,999.99
$600.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
VEHICLE FITMENT
2018-2023 Ford Mustang GT 5.0L V8
Fastback (No Valves)
*For vehicles without Active Valve exhaust
PRODUCT DESCRIPTION
3.0" Cat-Back, Dual Rear Exit with Twin 4.0" Polished Pro-Series Tips
Xtreme Sound Level - Part Number 21040
+5HP +4TQ
+48% Flow
-9lbs Weight Savings
Sport Sound Level - Part Number 21042 Recommended for pairing with aggressive engine modification
+5HP +4TQ
+48% Flow
-4lbs Weight Savings
INSTALLATION
Xtreme 21040 Installation Instructions
Sport 21042 Installation Instructions
YEARS: 2018, 2019, 2020, 2021, 2022, 2023












