Replacement fender or arch extension?

A replacement gives a continuous surface with no seam but the factory panel comes off. An extension bolts over the factory panel, is reversible, and shows a defined step. The kit states which construction it is.

Do wider fenders need wider wheels?

Yes — a widebody fender only looks and works right with the wheel and offset it was designed around. Send the wheel spec with the enquiry so clearance can be checked.

Is the rear panel a fender too?

In everyday speech yes, but the catalog calls the panel behind the door a quarter panel, because on most cars it is welded to the body and replacing it is a different job. It has its own category.

Does the fender vent come with it?

On the designs that have one, yes. Several kits list fender vent trim and arch garnish as separate items — check the kit contents.

Can I fit widebody fenders without the rest of the kit?

Physically yes, but the standard-width lip, skirts and diffuser will no longer line up with the wider body. Order the widebody versions of those panels too.

Aero parts · made to order

Carbon Fiber Fenders

Front fenders, arch extensions and the vent trim that goes with them, in standard width and widebody versions.

Request quote

CMST carbon fiber fenders — Lamborghini Aventador LP700

Standard width, or wider

Weave / surface

Woven
Forged
Honeycomb
3K woven
Gloss
Matte
Paintable / unpainted

Fitment splits on

The same vehicle has more than one version — send the chassis and we will confirm which one fits.

Supply terms

Two constructions: Replacement fender (factory panel removed) · arch extension (over the factory panel)
Widths: Standard width, and widebody versions sized to the wider track
Often supplied with: Fender vent trim and arch garnish where the design has them
Rear panels: Behind the door it is a quarter panel — separate category
MOQ: 1 piece, mixed across parts and vehicles
Lead time: 7–20 days on standard orders
Warranty: 3 months on carbon parts from the date of fitting
Packing: CMST-branded export packaging with product label and parts pack

Every mold starts from the car's own body surface. A 3D-printed sample is trial-fitted on a real vehicle before the mold is cut, and the first production part is fitted again before it ships.

Find your vehicle

Every vehicle below has at least one part in this category. Open a vehicle to see its kits, the material grades it is tooled in and what each kit contains.

Marques carrying this part

All marques

Grades this part is tooled in

FRP
Primed and paint-ready. The usual grade for fenders and arch sets that get painted body color.
Dry carbon
Prepreg, lightest, finished weave, for fenders meant to show carbon.
Vacuum carbon
Gloss clear coat, the volume carbon grade.

Five grades run through the same molds. Ask for the grade by name on the quote — it changes weight, finish on arrival and price band, not fitment.

Questions buyers ask

Replacement fender or arch extension?: A replacement gives a continuous surface with no seam but the factory panel comes off. An extension bolts over the factory panel, is reversible, and shows a defined step. The kit states which construction it is.
Do wider fenders need wider wheels?: Yes — a widebody fender only looks and works right with the wheel and offset it was designed around. Send the wheel spec with the enquiry so clearance can be checked.
Is the rear panel a fender too?: In everyday speech yes, but the catalog calls the panel behind the door a quarter panel, because on most cars it is welded to the body and replacing it is a different job. It has its own category.
Does the fender vent come with it?: On the designs that have one, yes. Several kits list fender vent trim and arch garnish as separate items — check the kit contents.
Can I fit widebody fenders without the rest of the kit?: Physically yes, but the standard-width lip, skirts and diffuser will no longer line up with the wider body. Order the widebody versions of those panels too.

Related categories

Talk to the factory

Tell us the vehicle and your market

Quotes come back with kit content, material options and lead time. Tuning shops and distributors only — we do not sell to vehicle owners.

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