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The JCX blog

Guides from the shop floor

Fitment guides, style decoders and install notes written by the people who sell and fit these parts.

F30/F31 Dry Carbon Fiber Varis Style Front Lip

Latest · Aero & Carbon

  • F30
  • F31
  • F32

Best BMW F30 carbon fiber mods: lips, diffusers, canards, mirrors

The best F30 carbon fiber mods compared: four front lips, two rear diffusers, canards and mirror caps, how to check your bumper, and builds at three budgets.

· 9 min read

G80/G82/G83 Dry Carbon Fiber CSL Style Grille
Aero & Carbon
  • G80
  • G82
  • G83

G80 M3 and G82 M4 carbon fiber parts: grille, skirts, diffusers

Every carbon part for the G80 M3, G82 M4 and G83: CSL, ST and V grilles, lips, side skirts and diffusers compared, ACC explained, and three priced builds.

· 8 min read

F8X Dry Carbon Fiber GTS Style Front Lip
Aero & Carbon
  • F80
  • F82
  • F83

F80 M3 and F82 M4 front lip guide: all eight styles compared

Every F80 M3 and F82 M4 dry carbon front lip compared: V, GT4, K, V2, GT, GTS, CS and MP. How each looks, which suits a daily, and how to match the rear.

· 9 min read

F8X Equal Length Midpipe
Engine & Charge
  • F80
  • F82
  • G80

F80 equal length vs single midpipe, and the G80 Z-pipe options

Equal length or single midpipe on the S55 F80 and F82, which G80, G82 or G87 midpipe or valved system to pick, and straight answers on drone and tunes.

· 9 min read

S55/B58/S58 Downpipes
Engine & Charge
  • B58
  • S55
  • S58

B58, S55 and S58 downpipes: catless, tunes and which to buy

What a downpipe does on a turbo BMW, catless vs catted, why it needs a tune, and how to order the right B58 Gen 1, B58 Gen 2, S55 or S58 downpipe.

· 9 min read

F80 RGB DRL LCI 18+
Lighting
  • F80
  • G20
  • G87

BMW RGB DRL guide: which kit fits your F80, G20, G87 or G42

Which RGB DRL kit fits your F80, G20, G87, G42 or F30, how to tell pre-LCI from LCI, what the install involves and where coloured DRLs are road legal.

· 9 min read

G80/G82/G83 Carbon Fiber MP Style Side Skirts
Fitment
  • F80
  • G80
  • F30

BMW chassis codes explained: F80 vs F82, G20 vs G80 and what fits

What BMW chassis codes like F80, G80 and F8X mean, how to find yours from the VIN, and which parts swap between M and non-M, sedan and coupe, and LCI cars.

· 8 min read

F30/F80 Clear GTS Taillights
Lighting
  • F80
  • F30
  • G80

GTS, CSL laser, LCI, clear or smoked: BMW taillight styles decoded

What LCI, GTS and CSL laser style taillights follow, how clear, smoked and red lenses differ, and how to order the set that fits your F30, F80, G20, G80 or G30.

· 8 min read

G87/G42 N Style Carbon Fiber Hood
Care & Install
  • G87
  • G8X
  • F8X

Dry carbon vs wet carbon: what you pay for, and how to keep it new

Dry carbon is prepreg cured under pressure; wet carbon is cloth wetted in the mold. How to tell them apart by hand, and how to stop the clear coat yellowing.

· 8 min read

B58 Charge Pipe
Engine & Charge
  • B58
  • S55
  • F80

Charge pipes explained: why the factory plastic fails on the B58 and S55

Why the plastic charge pipe on the B58 and S55 cracks or blows off, what the failure feels like on the road, and how to order the right aluminium replacement.

· 8 min read

F80 Snake Eyes Switchable Headlights
Lighting
  • F80
  • F82
  • F32

Snake Eyes headlights: 2-way vs 3-way, and why the pin count matters

What 2-way and 3-way Snake Eyes headlights change, how the switching works, and how to count the pins on your F30, F32 or F8X headlight plug before you order.

· 8 min read

F80 RGB DRL LCI 18+
Fitment
  • F30
  • F80
  • G20

Pre-LCI or LCI? How to tell which BMW you actually have

The LCI facelift is the main reason a BMW lighting part does not fit. Model-year tables for the F30, F80, G20, G80 and G30, plus the checks to do on the car.

· 8 min read

F8X Carbon Fiber PSM Style 4 Piece Diffuser
Aero & Carbon
  • F80
  • F82
  • G80

What PSM, V, MP, CS and CSL mean on BMW carbon aero

What MP, CS, CSL, GTS, PSM and V style mean on a BMW carbon lip, spoiler or diffuser, what each shape does, how they mix and how to choose.

· 8 min read

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