F8X M3/M4 CF Drive shaft mod

[x Spades x]

You would need to buy on and then contact my contact.

While I could make some money by facilitating the transaction…I’m doing it to help the community. I’ve certainly benefitted from others doing leg work to get a vendor on board.

Understood, thank for doing this!

OK, I'll get a shaft this week and look out for the upcoming process.

I do agree that we should find an established shop that can balance them to perfection.

[Cronenberged]

What's the torque rating on the F8X cf driveshaft? Aside from turbo and superchargered cars most cars with aftermarket running M/A won't see torque above 450ft lbs.

[bigjae46]

From the vendor:

“So we offer a one year warranty parts and labor. The only exception is if vehicles are tuned beyond the capabilities of the components.”

If the shaft blows apart then probably wouldn’t fall under warranty. High speed vibration - should be covered unless he shaft is showing signs of being subjected to high levels of torque.

[0-60motorsports]

You would need to buy on and then contact my contact.

While I could make some money by facilitating the transaction…I'm doing it to help the community. I've certainly benefitted from others doing leg work to get a vendor on board.

Thank you for doing this! I'm sure we all appreciate it.

[bigjae46]

Would we buy our own and ship them or will you be sourcing them and going through your contact?

You would need to buy on and then contact my contact.

While I could make some money by facilitating the transaction…I’m doing it to help the community. I’ve certainly benefitted from others doing leg work to get a vendor on board.

[x Spades x]

Still working on some details but so far…

$800 shipped. Only need the F8X driveshaft. They source the flanges and parts. I’m waiting for more details -

- can I provide the CV joint and guide bushing?
- are the flanges machined, reused from a different shaft?
- what is the warranty?
- does it cover high speed vibrations?

let me know if I need to ask any other questions.

Would we buy our own and ship them or will you be sourcing them and going through your contact?

[Cronenberged]

I would be more inclined if we can find a single source/shop that will do these right and not mess them up as opposed to some others who tried a shop and it didn't work. $800-1000 is decent for this mod and worth it at that cost imo.

[bigjae46]

Still working on some details but so far…

$800 shipped. Only need the F8X driveshaft. They source the flanges and parts. I’m waiting for more details -

- can I provide the CV joint and guide bushing?
- are the flanges machined, reused from a different shaft?
- what is the warranty?
- does it cover high speed vibrations?

let me know if I need to ask any other questions.

[EthanolTurbo]

Just double checking, only the diff end needs to modified? The shop is thinking the transmission end also needs modification.

You have to do both ends.

[x Spades x]

I just read this whole thread and got excited... then disappointed... then excited again.

I have an SMG car, so very interested in seeing if this is possible. Should I buy a CF driveshaft??

[Radekxpl]

Just double checking, only the diff end needs to modified? The shop is thinking the transmission end also needs modification.

Although transmission side looks the same to the untrained eye, but if you closely the Gibo is larger on f8x then on the e46 therefore won't fit so you would need to do transmission side as well from my understanding 🤷♂️


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[bigjae46]

Just double checking, only the diff end needs to modified? The shop is thinking the transmission end also needs modification.

[0-60motorsports]

Any more updates from others who have done this? Any one know a shop on Jax FL who can do the work?

[Projecte46m3]

Can we share a list of good shops that are able to handle the modification?

[liam821]

There you have it. My driveshaft was done improperly. Now I have to figure out why.

That is so frustrating. What a pain in the ass