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4N Motorsport

@4n_motorsport

2 days ago

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Posted On: October 13th 2026, 12:29 am

Here is a project I have wanted to do for a while. This is the 4N- N52 F1 style headers that I am developing. They are 6-1 sequential fire, stepped, and equal length, the collector is cast stainless with a central bullet to direct the pulses out of the collector. This should have a very high pitch sound for an N/A I6. Testing will begin as soon as I finish weld them this week and get them on a test car here!

#n52 #cars #bmw #racing #performance

Comments (175)

7 hours ago

changyeetan

Is the n52 going to get destroked too

17 hours ago

brianwade32

Could you make some to fit S50/S52?

a day ago

haryksl

my god i can’t wait to hear this. especially if it’s on a destroked n52

a day ago

dat.z4

I would love to buy one of these headers

a day ago

dutch.garage

@grauslick

a day ago

silasanderson950

I doubt you can but it would be insane if you did some semi-affordable upgrades for the n52. I think it would’ve a good cheap platform in the future once m52 m54 engines are gone since they’re already somewhat drying up. Next is this for cheap NA engines and it doesn’t have the n54 headaches.

a day ago

rogue1design

Let’s put it in my E30 M3?

2 days ago

kosta_mimaros

I got a 128i that needs this treatment 😂

2 days ago

raymondt_s14

Def interested in this

2 days ago

trk_m3

I wonder how this would sound on an S54…

2 days ago

mohamed__bil3ed

Mike, are you gonna leave the valvetronic, or you gonna delete it? And is this small diameter going to affect the horsepower on the high RPM 🤔 Since it is similar to the N73, it has 3.5 cm diameter, I believe.