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SLN Decat Downpipe - G80 G82 M3 M4 X3m X4m

by SLN
Save 10%
Original price £595.00
Current price £535.50

SLN BMW S58 Decat Downpipe M3 G80 M4 G82 & X3M X4M LCI

SLN Performance has been developing its own brand over the last 10 years, which focuses on the highest possible quality, without the usual "M tax" price tag

SLN Performance products are industry leading, being used by some of the most prestigious performance shops across the UK, EU and USA. Avoid cheap imitations! 

We are particularly proud of our unique G Series M3 M4 downpipes, which were designed specifically to eliminate the highly restrictive nature of the OEM downpipes – thus creating optimal exhaust flow and drastically improving performance

These are downpipes worthy of your S58 G80 M3 and G82 G83 M4!


Significant power gain

Faster spool up and better throttle response

Flow-optimised smooth transition design

Increasing the life of the turbos

Reducing under hood temperature

100% bolt-on installation

100% TIG welded

Highest quality 304 stainless steel

OEM-spec 304 SS flanges

All brackets and mounts as on OEM unit

LHD/RHD Compliant

This item fits the following BMWs:

2020 – 2023 G80 BMW M3 RWD & AWD including Competition

2020 – 2023 G82/G83 BMW M4 M3 RWD & AWD including Competition

2023+ G87 BMW M2 RWD

2022+ BMW X3M X4M LCI

An ECU tune will be required to fit these downpipes. Please work with your tuner to ensure the correct ECU calibrations are carried out 

The use of de-cats, sports cats are for off road/motorsport use only. Using these parts would inhibit your vehicle from passing a MOT test.

Only EC type-approved components are legal and fit for road use.