Why an $800 Carbon Fibre Part Costs $800
The carbon fibre is the cheapest part of a carbon fibre part. What you are actually paying for is a dedicated mould, a minimum production run, and around three hours of skilled labour per piece, most of it in the paint.
I get asked about pricing constantly, usually by someone comparing a proper part against something half the price. So here is how the maths genuinely works in this trade, and why the first run of any new design is the expensive one.
Why I commission runs instead of making parts myself
The obvious question is why I do not just buy the gear. Here is what that would take.
| Equipment | Rough cost |
|---|---|
| Autoclave, required for genuine prepreg dry carbon | Six figures |
| CNC router for pattern machining | $10,000 for a usable one, over $100,000 at the top end |
| Curing oven, vacuum pump and fittings | Several thousand |
| Spray gun, compressor, extraction and booth | Several thousand |
| Freezer storage for prepreg fabric | Thousands |
| 3D scanner | About $5,000 |
A modest oven-cure setup with no autoclave still lands around $14,000 before you have made anything. Add an autoclave, which genuine dry carbon actually requires, and you are into six figures on that machine alone, plus roughly fifty times the power cost per cure.
Then there is the part you cannot buy. A finished part takes around 2.8 hours of skilled labour, and about two thirds of that is in the clear coat, because carbon is notoriously difficult to paint without pinholes making it fisheye. That is a trade, not a weekend of YouTube.
So I design the parts, supply the 3D scan data, approve the final CAD before any tool is cut, and commission the production run from a manufacturer who has the equipment and the trade skills. I would rather put money into more designs than into machines.
What it actually costs to produce one
Easy Composites, a UK composites supplier, published a full line-by-line costing of a prepreg carbon engine cover retailing at $800. Their figures, in US dollars, and they are the best public numbers on this anywhere. Their breakdown of the business of carbon fibre manufacturing is worth watching in full.
The short version of what they found:
- About $63 of carbon fibre in the part. Roughly $76 all up in materials and energy.
- 65 minutes of labour to cut, laminate, vacuum bag, cure, demould and trim it.
- Another 103 minutes just to clear coat it, because a proper finish takes several rounds of painting, baking and flatting back rather than one pass.
- Around $1,500 of tooling in design, pattern, mould and templates, spent before a single sellable part exists.
That last line is the one that matters, and it is the same problem I face from the buying side, just with different numbers.
The costs that land before part one exists
Two things drive the price of any enthusiast carbon part far more than the material does.
Every design needs its own dedicated mould. Not a modification of an existing one, not a shared tool. Its own. And it is paid 100 percent up front, inside the deposit, rather than recovered gradually across the run. The manufacturer does not carry that risk. The brand ordering the run does. If a design flops, that tool is an expensive paperweight already paid for in full.
The minimum order quantity on a custom carbon design is 20 units. That can be split across finishes, gloss and matte, twill and forged, but it is still 20 pieces per design. There is no version of this where anyone orders three to test the water. The first commitment on a new part is twenty of them plus a tool, in one payment cycle.
Why the first run is the expensive one
Here is an illustrative example on an $800 part. Round numbers, chosen to show the shape of the problem rather than to represent any specific product.
| Line item | Cost |
|---|---|
| Dedicated tool, paid up front | $5,000 |
| 20 pieces landed, at $300 each including freight | $6,000 |
| Committed before a single sale | $11,000 |
| First run | Reorder | |
|---|---|---|
| Tooling inside the run | $5,000 | $0 |
| Cost per unit | $550 | $300 |
| Retail | $800 | $800 |
| Gross profit per unit | $250 | $500 |
| Gross margin | 31% | 63% |
Same part, same price, same customer. The only thing that changed is that the tool was already paid for, and the margin doubled.
And those are gross figures. Out of them still comes GST at the border, payment processing, the cost of holding stock for months, and every design that never sells through.
Which is why the real question on any new design is not "will it sell". It is will it sell twice. A part that does one run and stops has consumed half a year and eleven grand to make five thousand dollars gross. Anyone quoting carbon margins without saying which run they mean is telling you half the story.
Six months, not five weeks
The sequence on a genuinely new part runs like this. Deposit paid, which starts the design work. Design queue, then CAD, then sign-off, because I approve the final design before any tool gets cut. Then around 58 working days for the mould. Then 10 to 15 days for a first sample. Then the production run, the balance paid before dispatch, freight, and a day with stock physically in hand for inspection before any of it goes on sale.
Five to six months when nothing goes wrong. That is the honest answer to why parts get announced long before they ship, and I covered the reorder version of the same problem in what happens between sold out and back in stock.
The costs that never show up on an invoice
Donor parts do not come back. When a physical part gets sent away to be scanned for a new design, it is gone. For a small interior piece that is an annoyance. For something like a spoiler it can be a three thousand dollar part that never comes home, plus the freight to send it. That repeats for every design developed from a physical sample, which is exactly why a 3D scanner is a cost-avoidance purchase rather than a speed one.
Scan data is my job. Anything that mounts to the car needs scanned mounting data or the fit will be wrong. Parts that bolt to the front end need the car scanned, not just the part.
The design queue is not mine to control. Design work starts once the deposit lands, then waits its turn. I can chase. I cannot skip.
Dead stock is a real line. Not every design sells through. When one does not, that is twenty units and a tool sitting as capital that cannot be used for anything else.
So why does it retail at $800?
Because the alternative is that the part does not exist. Nobody tools up a model-specific piece at twenty units as charity. The cars that get good carbon options are the ones where somebody was willing to risk five figures on a maybe, wait six months, and make a thin margin on the first run in the hope there is a second.
That is the actual trade. You get a part nobody else was going to make.
Where you should push back is when a part is priced at this level and built to a cheaper standard. There is only around sixty dollars of carbon in a part like this, so a seller offering the same shape for a third of the price is not buying cheaper fabric. They are cutting process, labour, or the material stack behind the surface, usually by running fibreglass structural plies under a cosmetic carbon ply. Knowing how to tell a full carbon part from one backed in fibreglass takes about ten seconds once you know what to look for.
If you want retail bands across part types rather than production costs, I wrote what carbon fibre parts actually cost to buy separately. And if you would rather look at parts than spreadsheets, the Ford Falcon FG parts in real carbon fibre are here, alongside the rest of the carbon fibre range.
FAQ
Why not just buy an autoclave and make them yourself?
An autoclave for genuine prepreg dry carbon runs into six figures, before a CNC router, oven, vacuum gear, spray booth and cold storage for the fabric. A modest oven-cure setup with no autoclave is still around $14,000, and it takes a trade to use any of it well. Commissioning runs buys far more designs than owning machines would.
How much carbon fibre is actually in a car part?
Less than people assume. In the published costing of an $800 prepreg engine cover, the carbon fibre itself came to about $63, with materials and energy together around $76. Raw material is rarely more than a small fraction of the price of a finished cosmetic part.
Why is there a minimum order on carbon fibre parts?
Because each design needs its own dedicated mould, and no manufacturer cuts a tool and sets up a run for a handful of pieces. Twenty units per design is the standard minimum on custom carbon work. It can usually be split across finishes, but the total stays the same.
Why does clear coating carbon fibre take so long?
Microscopic pinholes on the surface make paint fisheye, so a proper finish takes several rounds of painting, baking and flatting rather than a single pass. In the published costing, clear coating took over an hour and a half against about 65 minutes for producing the part itself.
Why do carbon fibre parts take months to arrive?
The mould alone takes around 58 working days, after the design work and before a first sample exists. Add production, freight and inspection and a genuinely new part is a five to six month project from deposit to shelf, assuming nothing slips.
Written by Riley Baginski, founder of RB Innovations. Production costings are from Easy Composites' published breakdown and are in US dollars. The $800 worked example uses illustrative round figures to show how tooling and run size affect pricing, and does not represent any specific product.