Refinishing OEM CF splitters

neilvan · 08-07-2019, 07:29 AM

I purchased my E90 335 with a few mods; 1 of them being Carbon fiber splitters for the M-sport bumper. The clear coat has seen a few rocks over the years and both are peeling in many spots.

Upon taking them off, It turns out they are Genuine BMW Carbon splitters so I'd like to refinish them. Any advice on refinishing Carbon Fiber in this shape?

Sand all the clear off and re-clear? Sand the edges and bubbling part and just clear over top? carbon safe stripper and re clear? I've done lots of paint work just nothing with Carbon yet.

6ixSpd · 08-10-2019, 03:49 PM

You should be able to sand/peel off the remaining clear coat and then re-clear it all.

A few guys have repaired their CF parts using this procedure on M3s. I'm sure there's YouTube tutorials on this too.

neilvan · 08-12-2019, 08:55 AM

That would be the ideal process, I'm just worried about sanding too much into the weave. I guess Ill just have to try and find out.

08-07-2019, 07:29 AM	#1
neilvan Major 858 Rep 1,363 Posts Drives: 09 E90 335i M-Sport 6MT RWD Join Date: Nov 2017 Location: Ontario, Canada iTrader: (0) Garage List 2007 BMW E61 530xi [0.00] 1993 Mazda Miata [0.00] 2009 BMW E90 335i [0.00]	Refinishing OEM CF splitters I purchased my E90 335 with a few mods; 1 of them being Carbon fiber splitters for the M-sport bumper. The clear coat has seen a few rocks over the years and both are peeling in many spots. Upon taking them off, It turns out they are Genuine BMW Carbon splitters so I'd like to refinish them. Any advice on refinishing Carbon Fiber in this shape? Sand all the clear off and re-clear? Sand the edges and bubbling part and just clear over top? carbon safe stripper and re clear? I've done lots of paint work just nothing with Carbon yet.
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08-10-2019, 03:49 PM	#2
6ixSpd Save the manuals! 6015 Rep 6,745 Posts Drives: '16 M3, '23 718 Spyder Join Date: Feb 2016 Location: 416 iTrader: (4)	You should be able to sand/peel off the remaining clear coat and then re-clear it all. A few guys have repaired their CF parts using this procedure on M3s. I'm sure there's YouTube tutorials on this too. __________________ '16 M3 \| '23 718 Spyder Past: E92 M3, F87 M2, E39 M5, etc
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08-12-2019, 08:55 AM	#3
neilvan Major 858 Rep 1,363 Posts Drives: 09 E90 335i M-Sport 6MT RWD Join Date: Nov 2017 Location: Ontario, Canada iTrader: (0) Garage List 2007 BMW E61 530xi [0.00] 1993 Mazda Miata [0.00] 2009 BMW E90 335i [0.00]	That would be the ideal process, I'm just worried about sanding too much into the weave. I guess Ill just have to try and find out.
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