BMW M3 M4 G80 G82 Downpipes with 200 Cell Hi-Flow Sports Cats & Heat Shield 2021+

FJ Motorwerkes BMW M3/M4 G80 G82 Stainless Steel Decat Downpipes with Hi-Flow 200 Cell Sports Cat & Heat Shield

Our high-performance downpipes are precision-engineered from premium T-304 stainless steel and TIG-welded in-house for exceptional durability and quality.

Designed to optimize exhaust flow, these downpipes replace the restrictive factory components, delivering sharper throttle response and faster turbo spool. Expect noticeable power gains along with a deeper, more aggressive exhaust note.

Key benefits include:
✅ Reduced exhaust temperatures and backpressure, improving turbo efficiency
✅ Increased cylinder charge for maximum performance
✅ Brushed stainless steel finish with integrated heat shield

Compatible with:
✔️ BMW M3 G80
✔️ BMW M4 G82

Dyno testing has shown power gains of 25-30bhp on a stock setup.

Professional installation is recommended. These downpipes should pass MOT emissions.

⚠️ Note: OPF may need to be coded out. We recommend consulting a tuner to confirm compatibility with your vehicle.