- A manifold and exhaust coating rated to 1,000°C, with a data sheet that says what the figure means and how to get it.
- The sheet lists stainless steel among the surfaces it goes straight onto. No other maker on Amazon UK says that.
- The cure is an hour at 150°C, which a domestic oven manages, or an idle run and a normal run on the car.
- U-POL recommends its own primer for the full rating. Without it the sheet still allows direct to metal.
- Flat black or flat red. There is no aluminium and no gloss.
What it is
Raptor is U-POL's protective coatings range, best known for the bed liner, and Flameproof is its high heat line: a ceramic-technology aerosol for exhaust manifolds, headers and exhaust systems. U-POL is a British refinish maker, now an Axalta brand, which is why this can has what most of the shelf does not: a technical data sheet, dated and versioned, in plain English.
Amazon UK lists the flat black 338 ml can. Flat red exists, and the system includes a grey Flameproof primer and a satin clear, each with its own sheet.
The figures, and what they mean
The sheet says heat resistant up to 1,000°C, and the flat black can's own data sheet calls the rating intermittent: a peak the film survives, not a working temperature. That puts it in the same class as VHT's FlameProof, which publishes 1,093°C, and a long way above the 650°C aerosols. The paint type page explains why the qualifier matters more than the last hundred degrees.
Two figures on the sheet are unusual for an aerosol. Coverage: about a square metre per can at the recommended film build of 25 to 45 microns over two coats. And a recoat rule with a window: it overcoats itself within 12 hours without sanding; after that, denib from P500 and degrease with a water-based degreaser only, so as not to soak the film.
Putting it on
Clean and degrease, then mask. The sheet's list of surfaces is the reason this review exists: bare steel, galvanised steel, aluminium, titanium, stainless steel, and cured paint sanded with P180. All of them can take the coating direct. For maximum adhesion and heat resistance U-POL says to apply its Flameproof primer first, so a bare manifold that will see the top of the rating is a two-can job.
Shake for at least two minutes. Two or three coats from 15 to 25 cm with ten minutes between them at 20°C; handleable in about 30 minutes. The sheet asks for cans stored two hours at room temperature before use, which matters in a cold garage, and for goggles, gloves and ventilation. The general method is in painting manifolds and exhausts.
The cure
Once all the coats are on, let it air dry for at least four hours; overnight is recommended, so the solvents leave the film before any heat. Then, on the car, run at idle for at least 30 minutes, let it cool, and run again under normal conditions for at least 30 minutes. Off the car, bake at 150°C for one hour.
That is the easiest cure in the class. A domestic oven reaches 150°C with room to spare, so a manifold on the bench can be cured completely before it goes back on, which VHT's three-stage bake cannot manage at home. As with every coating here, sudden heat on an uncured film is what destroys it: the four hours of drying are not optional.
Where it sits against the others
Against VHT FlameProof: VHT publishes the higher figure, 1,093°C, and a three-stage bake whose last stage needs the car. U-POL publishes 1,000°C, a one-stage cure, and stainless on the list of surfaces. If the system is stainless, that settles it. If it is cast iron and the owner wants the last word in headroom, VHT.
Against POR-15 High Temp, the brush-on at about 650°C that forbids a primer: U-POL is the aerosol with 350°C more headroom and a primer it recommends; POR-15 is the one-tin job for a manifold that is coming off anyway.
Best exhaust and manifold paints 2026 ranks U-POL second overall and first for a stainless system.
Who it suits
A stainless exhaust, first and above all: it is the one can on Amazon UK whose maker lists the metal. A manifold on the bench with an oven to hand, because the cure is one hour at 150°C. Anyone who wants a figure above 1,000°C without a three-stage bake.
Not the owner who wants aluminium or a gloss, which it does not come in. And read the primer line before buying one can: on bare metal for the full rating, U-POL wants two.