G80/G81/G82/G83/G87 Catless Downpipes

Unlock improved exhaust flow, sharper response and a far more aggressive exhaust note with the Quick Performance 3.5” Catless Downpipes, developed for BMW’s S58-powered M cars.

Featuring a large 3.5-inch free-flowing design, these downpipes remove the restrictive factory catalytic converters to significantly reduce exhaust backpressure. They are an ideal supporting modification for tuned vehicles, allowing the S58 to breathe more efficiently and helping maximise performance on Stage 2 and higher-output setups.

Manufactured from high-quality stainless steel for excellent durability and heat resistance, each downpipe is designed around the factory mounting locations for a precise fit and straightforward installation.

Removing the factory catalytic converters also transforms the character of the S58, producing a noticeably louder, deeper and more aggressive exhaust tone while allowing more turbo and exhaust sound to come through.

Key Features

• 3.5” high-flow catless design
• Significantly reduces exhaust restriction and backpressure
• Improved exhaust flow and turbo response
• Ideal for Stage 2 and performance-tuned vehicles
• More aggressive exhaust tone and increased turbo sound
• High-quality stainless-steel construction
• Precision fitment using factory mounting points
• Designed for BMW S58 applications
• Quick Performance branding and quality control

Vehicle Compatibility

• BMW M2 G87
• BMW M3 G80
• BMW M3 Touring G81
• BMW M4 G82
• BMW M4 Convertible G83

Please note: These downpipes remove the factory catalytic converters and are therefore intended for off-road, motorsport or competition use where permitted. They may trigger an engine-management light without appropriate software calibration and may not comply with road-vehicle emissions or MOT requirements. For tuned vehicles, professional installation and appropriate ECU calibration are recommended.