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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Clutch for 335



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      11-10-2016, 11:19 AM   #1
KammyE90
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Clutch for 335

I have a 07 335i and noticed the clutch slip a few times over the weekend, it hasn't slipped since but I'm in the market for a new clutch now just incase. Cars making 400 whp and 425 wtq, was thinking about getting the f10 550i clutch with the mfactory single mass fly wheel. Does anyone know what the max power we can squeeze out of the 550i clutch is as I am planning on doing more to my car. Thanks!
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      11-10-2016, 12:53 PM   #2
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Quote:
Originally Posted by KammyE90 View Post
I have a 07 335i and noticed the clutch slip a few times over the weekend, it hasn't slipped since but I'm in the market for a new clutch now just incase. Cars making 400 whp and 425 wtq, was thinking about getting the f10 550i clutch with the mfactory single mass fly wheel. Does anyone know what the max power we can squeeze out of the 550i clutch is as I am planning on doing more to my car. Thanks!

The 550i stock is 400bhp and 450 ft-lbs torque. IMO while its clutch (or the 335is clutch, the other popular stock "upgrade" clutch alternative) may well be fine for where you are now, if you plan on doing more, you may want to look into the Spec 2+, or even 3+ depending on where you're heading.
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      11-10-2016, 01:09 PM   #3
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Go with the 2+ you'll thank me later.
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      11-10-2016, 01:36 PM   #4
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Obviously everyone is conscious of their spending, but I know how powerful the mod bug is on this platform, I'd tend to agree doing the 2+ as well.
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      11-10-2016, 03:27 PM   #5
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I heard the 550i clutch holds just as much power as the 2+ and if I put a single mass fly wheel do u guys still think I need the 2+
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      11-10-2016, 05:31 PM   #6
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Quote:
Originally Posted by KammyE90 View Post
I heard the 550i clutch holds just as much power as the 2+ and if I put a single mass fly wheel do u guys still think I need the 2+
A lot of people were boasting the 335is clutch and 550i clutch saying it was the next thing since sliced bread.

After people actually put some mileage and abuse on them they've been slowly finding out it wasn't that much better and definitely not = to a Spec 2+.

You could just as easily put a new 335i (regular clutch) on your vehicle and it will likely hold for some time with your power level but not nearly as long as an aftermarket clutch intended for the power.

Most of the issue is the clamping force and not so much the clutch material. That extra torque needs the stronger pressure plate provided with the aftermarket clutch. As the stock pressure plates weaken that's when they begin to slip, the material itself is usually fine as well as the thickness. (with regards to people in your power level).
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      11-10-2016, 07:35 PM   #7
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Yup, SPEC 2+
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