Exterior plastic parts can be supplied in three states: molded-in color (raw), primed, or fully painted. Whether you need a primed bumper, a painted trim part or a raw part, Yirox supplies all three: natural or black molded-in color parts for low cost, primed parts with PP/TPO adhesion primer ready for paint or water transfer printing, and fully painted 3C2B color plus clear parts.
| State | What you receive | Typical use | Gloss at 60° |
|---|---|---|---|
| Molded-in color (MIC) | Part in the material’s own color: natural, black, grey | Low cost; customer paints; unpainted textured parts | 3–8 GU |
| Primed | Part with surface preparation and primer (PP/TPO adhesion primer for polyolefins) | Body shops and installers who paint to the car’s color | Primer surface |
| Fully painted | 3C2B color + clear, or paint-free molded gloss or matte | Ready to fit | By finish, e.g. ≥90 GU gloss black |
Molded-in color (MIC) means the color is in the plastic itself, added as a pigment or masterbatch before molding, so the part needs no paint. MIC parts cannot peel or chip to a different color, and a scratch shows the same color underneath. We supply MIC parts in the material’s natural color or in black, grey and other colors, in PP, TPO, ASA and other materials.
MIC is used for unpainted textured parts such as fender flares and cladding, and for parts the customer will paint later. With UV-stable materials such as ASA, PP and TPO, MIC parts can stay unpainted on the vehicle.
A primed part has been cleaned, prepared and coated with a primer, but not with color. Primed bumpers and trim are popular with body shops because they can be painted to the exact color of the car. Primer improves paint adhesion and gives a uniform surface for the color coat.
On PP and TPO parts, we use a PP/TPO-specific adhesion primer, because polyolefins have a low surface energy that ordinary paint does not bond to. Primed parts are also ready for water transfer printing.
| Point | Unpainted (MIC) | Primed | Fully painted |
|---|---|---|---|
| Price | Lowest | Medium | Highest |
| Ready to fit | Yes, if the look suits | No, needs painting | Yes |
| Color match to car | No | Yes, by the painter | Yes, to a color standard |
| Scratch visibility | Low, same color underneath | — | Depends on finish |
| Best for | Work vehicles, textured parts, low cost | Body shops, collision repair | Retail and dealer accessories |
For ready-to-fit parts, we paint in our 3C2B system (base, color and clear) with a total film of 35–50 μm, color ΔE*ab ≤1.0 and cross-hatch adhesion 0–1. We can also mold paint-free high-gloss or matte parts, where the mold surface sets the finish. See piano black and matte black.
Parts are molded in the chosen material and color.
Surface and dimensions are checked before finishing.
Parts for primer or paint are cleaned and pre-treated.
A primer is applied; PP and TPO get an adhesion primer.
Painted parts receive color and clearcoat in a 3C2B system.
Show surfaces are protected for shipping.
when the part is textured, unpainted on the vehicle, or cost is the priority.
when the customer or body shop will paint to the car’s color.
when the part must arrive ready to fit in a set color or finish.
when a black part needs a finished look without paint cost.
Primed, painted or MIC bumper parts.
Browse Front Bumpers →
Bumper parts and grilles.
Browse Rear Bumpers and Grilles →
Primed or painted side skirts.
Browse Side Skirts →
Mirror caps and trim in any state.
Browse Exterior Trim →Not sure if you need primed or painted parts?Tell us who fits and paints the part and we will recommend primed, painted or molded-in color.
L1 rotary automatic (24 stations) and L2 overhead conveyor with 4 manual touch-up stations.
Spray booths ISO 8, flash-off and oven ISO 7.
60 °C × 10 min pre-bake and 80 °C × 30 min topcoat bake.
Gloss (BYK micro-TRI-gloss), color (X-Rite Ci64), film thickness (BYK 8500), cross-hatch adhesion.
Ready to quote primed or painted parts?Send drawings or a sample with the quantity and we will quote a primed bumper or painted parts.
Primed PP parts come from PP and TPO; painted parts can be finished in piano black, matte black or a carbon pattern.
Tough and flexible in the cold, the main bumper material. Used for bumpers, flares, side skirts and mud flaps.
See PP plastic and TPO design tips →
Piano black ≥95 GU and gloss black ≥90 GU at 60°, painted 3C2B in ISO 7/8 clean rooms. Spoilers, mirror caps, trim.
See piano black finish specs →
Matte 5–15 GU and satin 20–40 GU at 60°, painted or molded paint-free. Checked at 60° and 85°.
Compare matte and satin black finishes →
Water transfer printing with UV-cured clear, IMD or film, and real carbon fiber through partner factories.
Compare carbon fiber look finishes →The processes and services we use to turn this material into finished parts.
Primer and 3C2B paint lines.
Explore automotive plastic painting →Adhesion primer for polyolefin parts.
See PP plastic and TPO design tips →
Primed parts for water transfer printing.
Compare carbon fiber look finishes →
Primed bumper parts in volume.
Explore wholesale auto parts supply →Body shops want a primed bumper, retailers want ready-to-fit color. We supply MIC, primed and fully painted parts from one IATF 16949 factory.
Painting to the car? Primed parts come with PP/TPO adhesion primer.
See auto parts supply for body shops and installers →
Need several finish states? Mix MIC, primed and painted SKUs in one container.
See the auto parts importer program →
Own color line? Painted parts are held to ΔE*ab ≤1.0.
See the aftermarket brand program →Buyers on material, finish and quality questions we worked through with them.
“Gloss black parts are unforgiving. Small differences become obvious when they’re installed next to each other. We wanted more than a visual check, and the colour inspection records gave our quality team something objective to work with.”
“The first order tells you whether a supplier can make the product. The second and third tell you whether they can maintain the same standard. For our team, consistent finish and packing across repeat orders are what make a supplier worth keeping.”
Names and companies withheld at the customer’s request.
The color is in the plastic itself, so the part needs no paint and cannot peel. We supply natural, black, grey and other colors.
A bumper that has been prepared and coated with primer, ready to be painted to the car’s color by a body shop.
Unpainted MIC parts cost least; primed parts let a painter match the car; painted parts are ready to fit.
PP and TPO have low surface energy. A PP/TPO adhesion primer makes paint bond properly.
Yes. Our primed parts are ready for water transfer printing.
We offer low MOQ on selected items. The quantity is confirmed in your quote.
Send your drawing or a sample and tell us the finish state you need. We will reply with a quote.
