Downpipes

High-flow performance downpipes for BMW F-Series and G-Series models. Improve turbo spool, exhaust flow and overall power gains. Includes decat and sports-cat options for road or track setups.

Shop Related Upgrades

Midpipes | Intercoolers | Charge Pipes | ECU Tuning | Frequently Bought Items

FAQs
Do I need a tune with a downpipe?

Yes for decats and high-flow downpipes — tuning prevents warning lights and maximises gains.

Is a downpipe road legal?

Sports cats are generally road-friendly while decats are for off-road or track use only.

Will a downpipe make my BMW louder?

Yes — downpipes increase exhaust volume, turbo sound, and overall aggression.

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25 products

SLN BMW B58 OPF Ceramic Coated Decat Downpipe M240i M340i M440i 540i 640i 840i
SLN Performance
SLN BMW B58 OPF Ceramic Coated Decat Downpipe M240i M340i M440i 540i 640i 840i Sale price£290.00
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