Our main business is custom automotive plastic exterior parts — body kits, spoilers, bumpers, grilles and trim, pickup accessories, wheel covers and other vehicle-specific components — made in our own factory in Wuxi for distributors, importers and aftermarket brands. Start from a drawing, sample, benchmark part or existing SKU; we review fitment, process and tooling first, then handle mold development, production, finishing, inspection, private-label packaging and export.
Need other auto parts too? Tell us what you need. Our mature automotive supply network covers the rest — sourcing, supplier coordination, QC, consolidation and export. How it works →
Custom plastic exterior parts for passenger cars, EVs and pickup trucks are our core — the products our molds, processes and fitment experience are built around. Wheel balancing weights are an established line we also supply. For anything else, tell us what you need.
Body kits, front lips, spoilers and wings, side skirts and rear diffusers — new designs or model-specific versions of existing styles.
3D file, drawing or benchmark part; vehicle model and year range; target finish (e.g. gloss black, carbon-look or primer-ready).
Bumper style and facelift version, mounting method (clips, screws, tape), and the finish standard to approve on the sample.
Bumpers, grilles, exterior trim and other replacement parts matched to the original mounting points and openings.
OEM part reference or number, vehicle details, photos of mounting points, required surface (primer-ready, textured or painted).
Sensor, camera and tow-hook openings, fog-lamp and grille variants, and the market version of the vehicle.
Tonneau covers, running boards and pickup exterior accessories, including private-label programs for truck accessory brands.
Vehicle, cab type and bed length; reference product; hardware and installation requirements; branding and packaging.
Bed configuration, rails, liners and sports bars, hardware kit contents and packaging for long parts.
Hubcaps and wheel covers developed by size, style, finish and logo for distributors and private-label brands.
Wheel size, style reference, retention method, finish (e.g. silver, gloss black or chrome-plated) and logo.
Wheel size and valve-hole position, retention fit, and finish durability for the target market.
EV exterior parts and other model-specific plastic components outside the standard product lines.
Vehicle model and version, reference part or drawing, function and mounting requirements, finish and quantity.
Model version differences, interfaces with surrounding panels, and whether a new mold is needed.
Adhesive and clip-on wheel balancing weights in steel (Fe) and zinc — lead-free options for tire shops, service chains, distributors and private-label brands. Steel and zinc weights are made in our own factory.
Target market, adhesive or clip-on format, steel or zinc, gram or ounce increments, packing method and estimated quantity.
Rim type (alloy or steel), clip profile or tape type, coating, private-label packaging and lead-free (RoHS/ELV) documents for the market.
The right starting point depends on what you already have: an existing SKU, a part that needs changes, or a drawing, sample or benchmark for a new part. We confirm the route after reviewing the part, vehicle, target market and quantity.
Best for distributors, importers and e-commerce sellers who already know the product they want and mainly need branding and packaging.
The existing mold is normally used. Any tooling change depends on the branding method and is confirmed per product.
Best for buyers who need a variation of an existing part — a different finish, texture, logo position, mounting detail or packaging.
Some changes only need a new finish; others need a mold insert or modification. This is confirmed after review.
Best for brands developing a model-specific body kit, spoiler, bumper, trim part or wheel cover that does not exist in our range.
Design-for-manufacturing review, in-house mold development, first samples, test fit and sample approval come before production.
These checks are confirmed for the actual part and project instead of being repeated in each route.
Not sure which route fits? Send your part reference, vehicle, target market and quantity range. We will tell you the most practical starting point.
Ask Yirox to Review →Exterior plastic parts can be made in more than one way. Part size, geometry, surface detail and expected volume decide the best route — and the route changes the tooling investment more than anything else. We run both routes in-house and recommend one after reviewing your part.
| Injection molding | Plastic forming & fabrication | |
|---|---|---|
| Tooling | Steel mold; highest upfront investment | Simpler tooling; lower upfront investment |
| Unit cost at volume | Lowest | Higher than injection molding |
| Detail & repeatability | Fine detail; clips, bosses and ribs molded in; very consistent | Simpler geometry; some features added after forming or by fabrication |
| Typical exterior uses | Grilles, trim, wheel covers, bumper components, mirror caps, body kit parts | Large or simpler panels, low-volume styling parts, design validation runs |
| Best fit | Repeat programs with steady demand | Trial runs, niche models, lower annual volumes |
Not sure which fits? Send the part and your expected annual quantity — we will explain the recommended route, what drives the tooling cost, and what the first sample will verify. Ask for a process review →
Material and finish are chosen together. Exterior parts must hold their shape, resist UV and weather, survive low-temperature impact and match the look your customers buy. The final choice always depends on the part, the vehicle and the target market.
Materials: Typically PP or ABS, depending on the part; PU for some flexible lips; FRP for some low-volume or large designs.
Finishes: Gloss black, matte black, carbon-fiber look, textured, or primer-ready for painting to color.
Materials: Typically ABS or ASA, depending on the design; FRP for some low-volume designs.
Finishes: Gloss black, carbon-fiber look, primer-ready or painted to a color code.
Materials: Typically PP or modified PP for impact toughness; ABS for some designs.
Finishes: Primer-ready, painted, or textured black for unpainted bumpers.
Materials: Typically ABS, ASA or PC/ABS, depending on heat, weather and finish needs.
Finishes: Gloss black, matte or textured black, painted, or chrome-plated.
Materials: Typically ABS or PP, depending on size and retention design.
Finishes: Silver paint, gloss black, chrome-plated or two-tone finishes.
Materials: Depends on the product type: plastic end caps, step pads and panels are typically ABS or PP; structures may combine plastic with metal parts.
Finishes: Textured black, gloss black or powder-coated metal parts, depending on the product.
Color, gloss and texture are approved on a sample before mass production, and each batch is checked against that approved sample.
A useful first review needs more than a product name. These six items let us confirm fitment, process, tooling, MOQ direction and packaging before quoting.
STEP/IGS files are ideal. Drawings, clear photos, a physical sample or a benchmark part are also enough to start.
Include facelift or pre-facelift, trim, market version and LHD/RHD. For pickups add cab type and bed length.
Tell us the target finish if you know it — gloss black, carbon-look, textured, chrome-plated, primer-ready or a paint code.
Expected volume decides the process route and tooling investment. A rough range is fine for the first review.
Determines label content and which documents apply to the product.
Logo method, product labels, barcodes, inner and outer packaging, and any retailer or platform rules.
Choosing a custom automotive plastic parts manufacturer is not only about unit price. Before sampling or bulk production, buyers need to lock fitment, finish, dimensions, packaging and the commercial terms.
Exterior parts can change with model year, facelift, trim, market version and LHD/RHD — and with sensor, camera and radar positions.
We confirm vehicle data and critical points (clip and bolt positions, panel gaps, openings) against your reference, then test-fit samples. The approved sample becomes the production reference.
Gloss, texture and color can drift between batches, especially on painted, carbon-look or chrome-plated parts.
The finish standard is agreed on the sample, and every batch is compared with it at final inspection.
Large plastic parts such as bumpers, spoilers and side skirts can warp or shrink if material, mold design and cooling are not controlled.
Critical dimensions are agreed up front and checked during molding and at final inspection.
Long and large exterior parts are easily damaged in transit, and private-label goods must arrive shelf-ready with correct labels.
Packaging and labeling for OEM parts, applicable documents and shipping marks are agreed at the brief stage and checked before shipment.
Tooling cost, MOQ and timing change with the route: an existing SKU, a modified part or a new mold. We explain the cost drivers for your part before you commit.
Driven by part size, cavities, undercuts needing slides or lifters, surface texture, material and expected mold life. Mold arrangements are confirmed per project.
Influenced by the part, process route, finish, packaging and private-label requirements.
Confirmed after reviewing tooling, sample rounds, finishing and order quantity.
Every project is reviewed on its own details. The aim is to settle fitment, finish, dimensions, packaging, documents, tooling and commercial terms before sampling or bulk production begins.
Review Your Project Risks →Two representative scenarios from exterior and pickup programs. Buyer details are anonymized.
Outcome: a smaller, clearer range with sample and fitment records that make later expansion lower-risk. One approved part does not automatically confirm every model year, trim or market version.
Outcome: clearer fitment decisions, defined hardware requirements and a reusable vehicle-information checklist — before quantity was committed.
Every custom plastic parts project follows the same confirmation points. Sample route, timing, inspection scope and documents are aligned with the part, market and order before bulk production.
Send the part reference, vehicle, quantity, target market and branding needs.
Buyer Confirmation ResultRoute direction and any missing information.
We confirm the process route, material, tooling need and the basis for quotation.
Buyer Confirmation ResultQuotation with route, tooling and MOQ direction.
In-house mold development or modification where needed, then first samples.
Buyer Confirmation ResultFirst samples for review.
Dimensional check, test fit and finish approval. The approved sample is locked as the production reference.
Buyer Confirmation ResultApproved reference sample.
Molding or forming, finishing and painting, assembly, with in-process checks.
Buyer Confirmation ResultProduction to the approved standard.
Final inspection, private-label packing, labels and shipping documents.
Buyer Confirmation ResultInspection records and export documents.
Our approx. 20,000 m² factory in Wuxi covers the full chain for exterior plastic parts: mold development, injection molding, plastic forming and fabrication, CNC processing, surface finishing, painting, assembly and product inspection.
Each project uses the steps it needs — confirmed after reviewing the part, material, vehicle application and quantity.
Mold design, manufacture and modification for new and revised exterior parts, based on your 3D file, drawing or sample.
Injection molding for grilles, trim, wheel covers, bumper components, body kit parts and other molded exterior parts.
Forming and fabrication for larger, simpler or lower-volume exterior parts and design validation runs.
Trimming, machining and drilling of parts, fixtures, brackets and fittings.
Sanding, priming and painting — gloss or matte black, carbon-fiber look and color-matched paint. Chrome plating is offered for grilles and wheel covers.
Hardware, clips, brackets and multi-piece kits assembled, then dimensional, appearance, fitment and packaging checks.
Share the part, vehicle, material, target market and estimated quantity for a manufacturing feasibility review.
Photos from exterior parts production: finished parts, fabrication and production equipment.
Yirox is an auto parts and accessories supplier. Beyond our five product lines and custom parts, if you need other parts, just tell us. Through our supply network of rigorously vetted partner factories, we deliver the quality products and service you expect from us, with one contact for your whole range.
We match your specification to rigorously vetted partner factories we have worked with.
One contact for specifications, samples, packaging and timing across suppliers.
Every item is inspected and documented per order to the same standard.
Your custom parts and other items combined in one shipment, with export documents.
Partner factory examples: assembly lines and product testing.
We confirm the certificates, test reports, inspection records and export documents that apply to your part and destination market at the brief stage.
Yirox holds ISO 9001 and IATF 16949 quality-management certifications covering our exterior plastic parts production. REACH/SVHC chemical-compliance documents can be provided where the target market requires them. Order documents can include material information, inspection records and batch traceability.
Sourcing electrical items or other related parts in the same program? Marks and test reports by product category are listed on Certifications & Compliance →
Before shipment we confirm the documents and delivery terms your destination needs, so customs clearance and receiving go smoothly.
Available test reports, declarations and certificates of origin are added according to the product and destination country.
Custom parts programs succeed or fail on fitment, finish and follow-through. We combine our own manufacturing with export experience so those details are settled before volume.
Our molds, processes and fitment know-how are built around exterior parts for passenger cars, EVs and pickup trucks.
We know what international buyers check: fitment by model year and market, finish consistency, packaging and documents.
Approx. 20,000 m² in Wuxi with mold development, molding, forming, CNC, finishing, painting, assembly and inspection in-house.
Vehicle versions, mounting points and openings are confirmed before molds are committed and again on the sample.
Existing SKUs, modified parts or new ODM parts — from trial orders to repeat production, with your logo, labels and packaging.
Custom plastic parts from our factory, other auto parts through our supply network — we handle sourcing, QC, consolidation and export.
Questions buyers commonly ask before starting a custom, OEM or private-label exterior parts project.
Yirox is an automotive exterior parts manufacturer based in Wuxi, China. We manufacture automotive plastic exterior parts in our own factory of approx. 20,000 m², covering exterior styling parts, replacement body parts, pickup accessories, wheel covers and other vehicle-specific components.
We also supply wheel balancing weights as an established product line. If you need other parts, just tell us: through our supply network of rigorously vetted partner factories, we deliver quality products and service, and handle supplier coordination, QC, consolidation and export.
A 3D file (STEP/IGS), drawing, photo or physical sample; the vehicle make, model, year range and market version; the required material, finish or color if known; estimated quantity; target market; and logo, label and packaging requirements. A complete technical file is not required for the first review.
Yes. Vehicle-specific exterior parts are our core work. We review the model year, facelift, trim, market version, LHD/RHD, mounting points and any sensor, camera or radar cut-outs, then confirm fitment on samples before production.
Yes. New parts go through feasibility and design-for-manufacturing review, in-house mold development, first samples, fitment and appearance checks, and sample approval before mass production.
Yes. Private-label programs on existing SKUs can include your logo, product labels and branded packaging. Whether any tooling change is needed depends on the branding method and is confirmed per product.
It depends on the part size, geometry, surface detail and expected volume. Injection molding needs a higher tooling investment but gives the lowest unit cost and finest detail at volume. Plastic forming and fabrication generally need simpler tooling and suit large, simpler or lower-volume parts. We recommend the route after reviewing your part.
Whether a new or modified mold is needed, part size and complexity, the number of cavities, undercuts, surface texture, material, finishing or painting requirements, packaging and the order quantity. MOQ and tooling are confirmed per product in the quotation.
Yes. Trial orders are accepted so you can test a product or market before scaling. The trial quantity is confirmed per SKU or project.
Yes. Samples are used to confirm fitment, finish and packaging before mass production. Sample arrangements, cost and timing are confirmed per project.
The route (existing SKU, modification or new mold), part complexity, finish or painting requirements, the number of sample rounds and the order quantity. Timing is confirmed in the quotation.
Incoming material checks, in-process checks during molding and finishing, final inspection against the approved sample (dimensions, appearance, fitment points, labels and packaging) and organized inspection records for the order.
Yirox holds ISO 9001 and IATF 16949 quality-management certifications, and REACH/SVHC chemical-compliance documents can be provided where the market requires them. Product-specific marks such as E-mark/ECE or DOT apply to relevant products and models. The documents for each product and destination market are confirmed at the brief stage.
Send what you have — the part, vehicle, market and quantity. A complete technical file is not required for the first review.
Tell us about the part, vehicle and quantity. We will reply with the feasible route, the tooling need and what we will verify on the first sample.
Prefer email or files? Use our contact page.
