80.4KVIEWS
248REPLIES
218APPRECIATES
91ACTIVE PEOPLE
04-26-2026LAST POST
09-13-2025
09-13-2025
09-13-2025
Xtra30 wroteWho uses fake carbon in a car in THIS price range???Carbon Fibe interior trim added to my x3 30
GoodGuyAvi
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Ravenous666
09-14-2025
MKM2025 wroteEh, if it makes them happy, so be it. But a similar question would be what real weight savings and functional benefit is achieved by replacing the interior plastic trim with real carbon fiber trim?Who uses fake carbon in a car in THIS price range???
Bones Mccoy
09-15-2025
09-15-2025
GoodGuyAvi wroteBelieve it or not, the best ones are the all weather floor mats.M-Performance floor mats. I don't like the quality anymore
Fitment, looks, quality
GoodGuyAvi
10-15-2025
Does anyone have the mperformance rear diffuser base with gloss black or carbon insert? I only have found one vendor outside the US who is able to source parts.
leebmann won’t ship to the US
leebmann won’t ship to the US10-15-2025
ksla92 wroteThis company will ship to the US:Does anyone have the mperformance rear diffuser base with gloss black or carbon insert? I only have found one vendor outside the US who is able to source parts.leebmann won’t ship to the US
https://r44performance.com/products/genuine-bmw-g45-x3-m-performance-gloss-black-rear-diffuser-51125b8af54-51125b4d659
Ive only seen one person who has ordered and installed this so far. Whats frustrating is how long its taking for m perofrmance parts to be available for this vehicle, considering how long ago bmw released news on it. And still no m performance exhaust. Ive offered my vehicle to dinan and carbahn to develop performance parts and neither seem that interested. i guess if an antenna cover, mirror caps, side sticker , gas cap cover, and door sills are what you consider true performance parts, then you are covered.
ksla92
10-15-2025
I am right there with you. I have the front splitter on order from getbmwparts expected oct 20. I really want the rear diffuser so I might end up getting from R44 if possible, I have reached out to them a few times with 0 response tho…. Certainly it needs MPE, then would be perfect!
10-16-2025
bmwtye wroteI started looking the other day, and yeah no real perf parts out there. But then I kinda assumed the stock exhaust on M50 model is already BMW Perf?And still no m performance exhaust.
10-16-2025
10-24-2025
Ravenous666 wroteM performance rear diffuser base (or officially called bumper trim) for 20/30xdrive isI have started a collection of the M Performance parts for the X3 G45
Please share them in this thread if you get additional part numbers. I'm still missing the number for the exhaust tip covers.
M-Performance X3 lettering black 51142472831
M-Performance M50 lettering black 51145A92E37 or 51145A63543 (partnumber of i4 M50 where the 50 is slightly smaller)
M Logo small on Fender black 51145A4B373
M-Logo on M50 grill black 45mmx15mm 51145A4B372
Front 50 years M Badges: 82mm 51148087194
Rear 50 years M Badges: 95mm 51148087197
M-Performance side decals 51145B3E1E0 or maybe 82145B3E1E0
M-Performance front splitter (left and right parts) 51115A8F9F3, 51115A8F9F4 (Hexagon screws for plastic 07149110670 required)
M-Performance front splitter (centerpiece) 51115A8F9F5 (Expanding rivets 51118174185 required)
M-Performance rear diffusor base 51125B47A55 or 51125B8AF54 or 51125B47A64 I'm not 100% sure which rear diffusor partnumber is for cars with or without exhaust tips!
The first number 51125B47A55 is listed for the M50 by my dealer in Germany.
M-Performance rear diffusor Carbon centerpiece 51125B4D662 (Expanding rivets 51471911992 required)
M-Performance rear diffusor black centerpiece 51125B4D659 (Expanding rivets 51471911992 required)
M-Performance Carbon exhaust tips 18305B4CE49 and 18305B4CE50
M-Performance rear roof spoiler 51195B4D6D2
M-Performance antenna cover carbon 65205A59AB7
M-Performance Mirror covers Carbon 51168083557, 51168083558
M-Performance Mirror covers Carbon for RHD 51168083559 and 51168083560
M-Performance Doorsil Carbon (2ea required) 51475A6CBC3
M-Performance Doorsil Aluminum (2ea required) 51479464399
M-Performance gas cap Carbon 16112472988
M-Performance light carpet 63175B61FE0, 63175B61FE1
M-Performance Keycover 82295A56C32
M-Performance floormats (set of 4) 51475B4D3C3
M-Performance 20" summer wheel set frozen black 36115B4DA47
M-Performance 20" winter wheel set frozen black (2x) 36115B4E9E6, (2x) 36115B4E9E9 (Goodyear tires)
M-Performance 20" rim front frozen black 36115A19DF8
M-Performance 20" rim rear frozen black 36115A19DF9
22" M-Performance wheels M-Performance Y-Spoke 1134 set with Goodyear Eagle F1 Supersport tires: 36115B4DA56 - Price in Germany 5500,- €
22" M-Performance wheels M-Performance Y-Spoke 1134 - Front wheel without tire partnumber 36115B41F72
22" M-Performance wheels M-Performance Y-Spoke 1134 - Rear wheel without tire partnumber 36115B41F93
51125B8AF41 (previously 51125B47A64)
11-19-2025
tofublox3 wroteNot sure that's right. There are two components for the rear section (11 and 12 in below picture).M performance rear diffuser base (or officially called bumper trim) for 20/30xdrive is
51125B4D659 (previously 51125B47A64)
For non M50 cars, part 11 (Bumper trim, M Performance) was 51125B47A64 and now superseded by 51125B8AF41. Part 12 (Diffusor M Performance) is 51125B4D659 (gloss black) or 51125B4D662 (aramid).
For M50, the latest iteration for part 11 is 51125B8AF54. Part 12 same as above.
11-19-2025
strike4A wroteyou are right. i mistyped. thanks for correctingNot sure that's right. There are two components for the rear section (11 and 12 in below picture).
For non M50 cars, part 11 (Bumper trim, M Performance) was 51125B47A64 and now superseded by 51125B8AF41. Part 12 (Diffusor M Performance) is 51125B4D659 (gloss black) or 51125B4D662 (aramid).
For M50, the latest iteration for part 11 is 51125B8AF54. Part 12 same as above.
strike4A
12-09-2025
12-09-2025
DFTBA wrotehttps://g45.bimmerpost.com/forums/showpost.php?p=31598013&postcount=60Hi,
Quick one: is there a black'ish front emblem?
Cheers!
12-09-2025
12-09-2025
12-09-2025
The logo for the grill. The part mentioned under "grill" is for the fender. Or is the idea to repurpose the sticker?
I'd like to have it in black because it might look weird to have two black ones in the rear and a chrome one in front.
I'd like to have it in black because it might look weird to have two black ones in the rear and a chrome one in front.
12-09-2025
12-09-2025
Talking about reading...
Your list: "M-Logo on M50 grill black 45mmx15mm 51145A4B372"
Parts list with aforesaid number = M Seitenlogos = Fender ≠ grill
explaining why I talked about "repurposing". You should add "repurposed fender emblem" in the grill description if my assumption is correct.
For all I know I'm not your dude either, at least not yet.
Your list: "M-Logo on M50 grill black 45mmx15mm 51145A4B372"
Parts list with aforesaid number = M Seitenlogos = Fender ≠ grill
explaining why I talked about "repurposing". You should add "repurposed fender emblem" in the grill description if my assumption is correct.
For all I know I'm not your dude either, at least not yet.
12-09-2025
LOL.
You can get ripped off and order a single one with partnumber 51135B4E879 or get a set of two of the same size for far less, share with a friend and make a bargain.
But better complain about wordings on an internet forum.......
You can get ripped off and order a single one with partnumber 51135B4E879 or get a set of two of the same size for far less, share with a friend and make a bargain.
But better complain about wordings on an internet forum.......