It’s always the guys who make and sell the parts that make it sound like this mod is mandatory 😂

Picking up my First 2011 335i next week! Love the vids and you've given me a lot of useful info. Can't wait to start getting some bolt-on's and bump the power-up! Keep up the good work man!!

I’m at 590whp in my f82 fbo full e85 and i have the insane performance crank hub. Cars runs perfectly. When I had my oem hub taken out, my friction disk was split in half. I was a pull or two away from spinning my hub. There are shops that have had cars spin the hub while going 2 mph going on the lift. It is INSANELY random. Spend the $ for the piece of mind because ur car is bulletproof until around 700hp if u just get the hub done

Nice informative video guys... thanks. I have a stock F80 within warranty, and last month raised this crank hub matter with BMW Oz. They didn’t know anything straight up, but did chase it up for me internally. Here’s what they said... paraphrased. The design is a mechanical fuse. Due to the lengthy crank, and the chain drive being located on the end opposite to the transmission, there is a tendency for the crank to oscillate/vibrate as it twists. They want to shield the chain drive (and VANOS) from this vibration by allowing the crank hub to spin. However as the engine is of the interference kind, they have a sensor which detects the spin, and then limps it, throwing an error code almost immediately. They also stated that horsepower is a factor here, since whilst the chain drive mechanism is not load bearing in its operation, a higher tune could cause even greater crank oscillation. I can’t speak to whether DCT operation has any relevance, as that was not part of the conversation I had with them. The thing that they kept coming back to was the location of the chain drive, and how this is critical to why the crank hub must be allowed to spin in the S55. They pointed to how in the S58 engine, the chain drive was relocated to the transmission side, and hence they made the crank hub a single solid piece which cannot spin. I think that as they were speaking to me, they were up selling the G series! Anyhow, hope I’ve added something useful to this topic.

Great drive last weekend man! Got the max psi 4 pin crank hub installed a couple days ago. Love it and I finally have a peace of mind

Yooo thanks for getting my question in there! Great content as always, very informational and helped me a lot since I'm new to the S55 platform.

Your video with SSR Performance answered my question about the crank hub. Very informative and detailed. 2018 M3 Stock, DCT, no plans to upgrade yet. Thanks!

I just learned a lot. Thanks Omar!!! SSR is the best!!

Great content man ! This was very informative. Also UAE represent ✌️✌️

Keep these videos coming bro 🔥🔥🔥🔥

Been looking for a video like this.... thank you!

Great video! Thank you for the info!!!!

Thank you Omar! Answered all my questions.

Very informative video bro. ..👍🏼Thank you so much for your your work....🙏🏼

Omar brilliant video really informative and interesting really enjoyed it are you doing yours stay safe Bro

I love taking my 335I to SSR Performance, Nice and fair guys out there too.

That 100% guarantee is a bold statement!!!

Wow dude very cool to see you in a SSR shirt. I really hope you get an opportunity to work there or somethin that would be sick. I’d see you and the m4 more often! Marks my guy there😈 sick ass video bro so hyped I hope you become apart of there team!

Thanks for doing this video. I had no idea the improve the initial design from maximum psi.

They drill 4 holes into the crank shaft? Man, I'd be SUPER at unease with that...

Thanks for the info guys!

nice video man, this issue always in the back of my mind

In the most ideal way, the two sprockets should be built in the hub then keyed/spline to the crank, but this is engineering and a good engineering is both robust AND cost effective. The Bimmer Engineers probably do this for the manufacturing cost and I’m pretty sure they did the math based on potential failure modes, but perhaps they should reevaluate the potential failure modes and come up with solution. Static friction to transfer torque is actually pretty robust if it is spec correctly. Your manual clutch relies on this principle, granted when the clutch fail, the engine doesn’t blow out. I think the issue was the bolt was backing out and losing the compressive tension needed to maintain that friction.

I’m on the edge about this, bmw says it’s not common. And people say it’s a must, I have a 15 f80 dct tuned with bm3 stage 2 and I drive the hell out of it. Always spirited driving. I just don’t use kickdown because I like to shift on my own. My car is still under warranty and the dealership I bought my car from are cool enough to fix any problems with my car even though I’m tuned and have after market parts. I told them about the crank hub and if we should get it replaced with an aftermarket one. And they told me that if I buy it they will install it for free, but if it fails then that’s on me. That’s the situation I’m in LOL.

Great video really nice info too!!

great video! getting mine upgraded next week.

What horsepower would you suggest, i have a f80 M3 2018 with 10k miles thinking about going Jb4 Stage 1 if anything maybe Stage 2, but scared if it will throw the hub only thinking about pushing 460-470 wheel on the car. What you would you suggest @Omar , and great video man answered here.

Had my M2C stock for a year. Put a tune on and i spun the crank hub 10 minutes after the tune on my way home 🤦 i did 2 pulls and it spun! Cars currently in tbe garage right now getting the insane performance 4 pin crank hub! Vital if you ask me…

Being the owner of a new 2021 6spd M2 Comp I think I'm safe to run her how I please without worrying during the first 4 years of my warranty period. If it doesn't fail by then i should be alright in the long run.

Bmw makes such nice cars but they never seem to make them reliable enough.. there’s always the handful that never experience major problems but the majority of owners always deal non sense issues that cost a ton of money to fix. I don’t ever see myself buying a bmw unless I have money to just throw away, solid video very informative

You should do a carbon trunk and hood like in that blue m3 that’s shown in the beginning of the video it’s so aggressive I love it😈

Im a bmw tech. And this crank hub issue is not a real issue. It’s something forums and word of mouth made it seem like something it’s not. Spinning the crank hub only happens in manuals cars when over revving when shifting into 5th gear. Bmw dealers are oblivious to this issue people claim to “be common” literally only saw one m3 come to the dealer for this happening. So yes it can happen on these cars but on manuals due to driver error but it’s not some weak point on the car like people say it is

Hi Guys big respect to all involved SSR please can you give us explanation of how to put crank and cams in phase hod do you know where to drill the crank

Where can you buy a 2 piece crank hub? And how much would install cost pre engine blow up?

Great content

SSR🤩🙌🏾

I’m probably going precision dynamics

This is such a solution in search of a problem....

thanks for this one too

I wonder if stage 2 N55 M2 requires that too as preventive maintenance. Manual trans

what if i maintainining stock condition of my m2c? will it effect the crank hub? no mod at all

for this installation what is the expected price to pay at srr?

Great video 🤙🏼

Hello guys. Could you tell me please what type of drill did you use? Best regards :)

Haha Si after all the talk about, not wanting more power than the n55 single turbo could do. And all the crap that you like better the n55 single turbo setup, you end up with a twin turbo setup after all and one more unreliable then the n54 where there is a design flaw that you have to drill into the crank shaft. Nice!!!

Is there a shop you guys recommend in the Bay area for tuning and for replacing the crank hub? Also, does the B58 and S58 engines have this problem?

Here is another question, under a SCH situation, what is the opportunity to blow up the whole engine? Seems most of the case just need to replace with an enforced CH and do a re timing? If that’s the case, people could still do the CH at that moment, without replacing the whole engine. Feels it’s fair to not worry too much

Can someone explain to me why it can’t just be one piece with a bolt? Why does it have to be two separate sprockets??

Niceeee. This is the only thing holding me from buying an M4. Sounds like they are bulletproof besides the crank hub. Good to know there’s a 100% successful fix! How much does it cost out the door? 3,000?

Is the problem fixed on the 2018 and above models?

What if you just straight pipe and no tune will it spin?

Gotta be a photographer now to own an m4 and go to ssr for a new crank hub lol

the most important question how much is it to replace it before it breaks?

Do the 2017 and after models affected too? Because most of them are pre 2016..and is it possible when you remap it but dont remap the gearbox to be better than tp remap and the gearbox and push it to even more fast changes..to cause the issue? I mean maybe its not the raise in power but the gearbox remap is what is causing the issue?

BTW Omar, do the B58 and S58 engines have this problem?

I’ve got s55 m3 that has this issue right now. In Kentucky. Can’t seem to find anyone willing , with tools that has the know how to repair it. Know anyone around this area who does?

Idk if this is a dumb question but I’m buying a fbo Jb4 m4 putting down 615whp and I’m scared of the crank hub issue occurring how do I know if it is happening? Or how can I diagnose it before my engine blows ?

The pinned hub is good but wouldn't drilling the crank case for the little pins make it weaker? Also the pinned hub by itself isn't 100% solution. The bolt can still back out cause the hub to spin. Would need the bolt capture and the hub for it to be a so called 100% solution. This has happened to a guy with MaxPsi hub with the double pins.

really hope local shop has experience doing CH lol

m4 have to exchage this crank hub if i mod it to stage 2????

Thanks for sharing the idea. My plan is to keep stock power configurations till warranty due. Then, I will get the crankhub replaced before I start tuning. However my worry is 1. finding a shop which is able to do the job properly in my country; 2. getting the part shipped to my location. I wonder if SSR Performance ship parts to China. If they do, problem no.2 solved. (＾▽＾)

Did N55 have this issue?

Looking at a 2015 m4 with 12k miles for 42k should I run away? It’s my first sports car

Here is a question. Do you have issues with power loss, less rev happy S55 and crank shaft long term issues? Do to heavier keyed hub and the fact that there is a very small play?tolerance in the keyed hub.

Do you need it for the 2020 M4 ; I dont see an option to buy it for that year

What are the race track cars doing about this issue

does this issue effect 2018-2019 m4?

I stick out my head and say that it has NOTHING with horsepower to do. How would horsepower make it harder for the cam drive system and oil pump to rotate? Horsepower doesn't go throught the crank into the bolt itself and everything in the cam drive and oil pump system is exactly the same so nothing creates more resistance. I say it has only with transmission chocks to do. Extremely fast rev changes. I also say that it is much worse for the hub to stand on the dragstrip with slicks and dump the clutch then driving on the street with stock clutch and 700 horsepower. Another intresting thing is that BMW motorsport never have had any issue with the hub on their GT4 cars.

It’s as if bmw makes sure every m3 generation have a major engine problem lol. F80 - crank hub, E9X - rod bearings, e46 - vanos. Smdh. Still love the car tho. Had an e90 m3 and looking into an f80 #yolo

Don't know about US prices but in the UK you can get a s55 for like 5k so spending 3k on a ful fox is seeming more and more pointless

So nobody asked how much this cost? For install etc??

if i install it and it fails will you change my engine for free and pay for the engine?

What’s it cost?

Hey I bought an M4 that was turned previously before purchase how would I know if the crank up was fixed or not ??

The new M2 competition has the same engine and incorrect?

Info overload

Does this apply to a 2015 BMW M4? Thank you.

This is ONLY if you’re tryna mod your BMW for more power. He’s not saying, at all, this is mandatory and you need this for your car.

I just spun my crank hub. It’s slightly out of time. I’m selling the car and may just have the dealer to an OEM fix rather than the full upgrade.

Damn, I was gonna get 6MT f80 M3 and now I gotta a worried about this shit lol when I get and I have to drive it carefully now damn BMW THANKS LOL,

You may only need this when you go for stage 2 or 3, otherwise, it's just a waste. Higher powered M4 GTS has no issue with the same crank hub

Does the N55 have the same issue?

This is such an overhyped problem. Interesting that the issue is raised by the garages who offer a fix !! If you are massively tuning an m4 maybe but the issue is theoretical.

Vargas CH makes the most sense, if you’re even going to change this.

Shouldn’t BMW be paying for this to be corrected?

Why not just make both sprockets one piece? Why does it need to be (2) pieces in both BMWs original design AND the updated remedy

Really, the No. 1 question NOT answered was, "How much is the turn-key job by SSR to replace the crank hub?" Parts & Labor of course!

What was the cost?

So...if I get this my engine will be bulletproof? 🤔

Bro you missed the #1 QUESTION!!!! You should of had him give a estimated quoted price for the part and installation. Probably value information people might want to know.

Il y a pas que se pignons a changer pour que sa marche bien et longtemps il faux changer les coussinets de bielles en metant des coussinets plus robustes moi j ai un amis qui as ausser en monter des fait en forger depuis et malgré sont gros turbo plus jamais embêter par c est coussinets de bielles

Why not one piece that has two sprockets? Why still two parts?

The most important question of all that was not asked, how much?

I just don’t understand why bmw would design them like this 🤯 surely they could easily made a one /two piece solution

Y did BMW designed it in such a way?

Right? Right?!? Right! Right?? Right!?

So has BMW fixed the issue on newer cars?

S55 engine owners, just got a dead on their table, in their house, now. :))

Show us the Metal testing data. if you want to tune your car than take the risk, this motor was NOT designed to be pushed harder than mild tune.

Why not just make it one piece?