Gravity Performance decats instantly increase power by allowing exhaust gasses to exit the vehicle quicker. Our decats are designed to be direct replacements for the OEM catalytic converter
ensuring smooth installation every time.
Gravity Performance decats instantly increase power by allowing exhaust gasses to exit the vehicle quicker. Our decats are designed to be direct replacements for the OEM catalytic converter
Manufactured from highest quality T304 grade stainless steel
Mandrel bent and fully TIG welded for strength and durability
Free flowing catalyst replacement to get the most from the B48 engine
Designed to improve power and torque across the entire RPM range
Free flowing catalyst replacement to get the most from the B48 engine
 
Decibel Readings:
Decibel Readings:
Stock Valves Closed: 67.2
New

Gravity Exhaust Decat Downpipe – BMW 4 Series F32 F33 F36 420i 430i B48 15-19

£201.99 inc VAT (£168.33 + VAT)

Gravity Performance decats instantly increase power by allowing exhaust gasses to exit the vehicle quicker. Our decats are designed to be direct replacements for the OEM catalytic converter, ensuring smooth installation every time.

Manufactured from highest quality T304 grade stainless steel
Mandrel bent and fully TIG welded for strength and durability
Free flowing catalyst replacement to get the most from the B48 engine
Designed to improve power and torque across the entire RPM range

 

Decibel Readings:

Stock Valves Closed: 67.2

Stock Valves Open: 66.1

Decat Valves Closed: 69.6

Decat Valves Open: 71.2

Available to order

Fpr Gravity Performance, JapSpeed and Direnza products this is not guarenteed stock availibility and is available to order on demand

Estimated delivery by 05/05/2026

SKU: Gravity/EXDC143-3 Category: Brand:

More Information

Product Information

  • BMW 4 Series F32/F33/F36 420i, 420ix B48 2015-2019 models
  • BMW 4 Series F32/F33/F36 430i, 430ix B48 2015-2019 models

Please note this decat is only suitable for models with the B48 engine

Fitments

Gravity Performance decats instantly increase power by allowing exhaust gasses to exit the vehicle quicker. Our decats are designed to be direct replacements for the OEM catalytic converter, ensuring smooth installation every time.

  • Manufactured from highest quality T304 grade stainless steel
  • Mandrel bent and fully TIG welded for strength and durability
  • Free flowing catalyst replacement to get the most from the B48 engine
  • Designed to improve power and torque across the entire RPM range

 

Decibel Readings:

Stock Valves Closed: 67.2

Stock Valves Open: 66.1

Decat Valves Closed: 69.6

Decat Valves Open: 71.2

Weight 3.5 kg
Sensor Ports

2

Pipe Bore (mm)

88.9-76

Flexi Joint Length (mm)

100

Tech Specs

Specification

Category Decats
Brand Gravity
MPN

EXDC143-3

Ratings