ApexBuilt® BMW G87 M2, G80 M3, & G82/G83 M4 Race Downpipes (S58, 2021+)

On Sale from $1,745.00
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ApexBuilt® BMW G8X M3/M4 Race Downpipes (2021+) offer...

• Perfect fitment, guaranteed. 

• Drastically improved throttle response, quicker turbo spool, and an intoxicating exhaust note.

• Estimated gains of 20-25+ wheel horsepower and 40-50+ TQ when installed on a vehicle that is not tuned.

• Estimated gains of 60+ HP and 100+ TQ over stock power levels when paired with an aftermarket ECU tune.

• T304 stainless steel construction, assembled by hand in Fort Myers, FL

• Lifetime warranty 


These these parts are for OFF ROAD / RACE USE ONLY . They are not 50 state legal. Any of our race downpipes WILL NOT be sold in, or shipped to, the state of California. We advise you to run a tune on your vehicle for best results.




• 18329501471 (Cyl. 1-3)
• 18329501472 (Cyl. 4-6)

Fitment supported for the following vehicles:

BMW M2 Automatic Coupe 2023

BMW M3 Comp. M xDrive Sedan 2022+

BMW M3 Competition Sedan 2021+

BMW M3 CS Sedan 2023
BMW M3 Sedan 2021+

BMW M4 Comp. M xDrive Coupe 2022+

BMW M4 Competition Convertible 2022+

BMW M4 Competition Coupe 2021+

BMW M4 Coupe 2021+

BMW M4 CSL Coupe 2023