How Metal Finishing in the Motorcycle Industry Has Changed Over the Last Five Years

Motorcycles have always been designed & built to allow metal finished parts to be on display.

Unlike many manufactured products where structural components are hidden beneath body panels, a motorcycle exposes much of its engineering. Exhaust systems, wheels, engine components, handlebars, brackets, controls, frames and countless smaller parts all contribute to the finished appearance of the machine.

That makes surface finishing more than a cosmetic consideration. Manufacturers need finishing processes that can deliver appearance, corrosion resistance, durability and consistency while still meeting production and cost requirements.

Over the last five years, those requirements have continued to evolve.

Traditional polishing and chrome have certainly not disappeared. Instead, motorcycle manufacturers and their suppliers have gained more options. Powder coating, anodizing, advanced coating systems, physical vapor deposition (PVD), improved polishing processes and greater automation are giving manufacturers new ways to achieve distinctive finishes while addressing efficiency, environmental concerns and production consistency.

Here are some of the most important changes shaping metal finishing for the motorcycle industry.

1. More Diverse Finishes and Greater Customer Choice

For decades, bright chrome and highly polished metal helped define the appearance of many motorcycles, particularly cruisers and touring motorcycles.

Today, motorcycle design encompasses a much wider range of finishes.

Manufacturers may combine polished aluminum, satin finishes, blacked-out components, powder-coated parts, anodized aluminum, machined surfaces and specialty coatings on a single motorcycle.

That diversity means manufacturers need finishing processes capable of producing much more than one appearance.

The challenge becomes achieving the desired surface consistently across production volumes while maintaining durability and controlling finishing costs.

This has increased the importance of process development. Abrasives, buffing wheels, compounds, equipment, pressure, speed and cycle time must work together to produce a repeatable finish.

2. PVD: An Alternative to Traditional Decorative Finishes

Physical vapor deposition, or PVD, has become particularly interesting for premium motorcycle finishes.

PVD is a vacuum-based process that deposits thin amounts of various metal alloys onto part surfaces that create distinctive metallic appearances.

One highly visible example came from Harley-Davidson.

For its 2025 Fat Boy Gray Ghost, Harley-Davidson used a PVD-based "Reflection" finish on the fuel tank and fenders to produce a chrome-like appearance. The application was significant because Harley-Davidson had previously used PVD on smaller components, but the Gray Ghost expanded the technology to much larger production motorcycle parts.

That development demonstrates how alternative finishing technologies are moving beyond small decorative components.

PVD also gives designers additional opportunities for finishes such as black, gunmetal, gold and reflective metallic appearances.

It does not mean traditional chrome is disappearing. Rather, manufacturers now have another finishing technology available when balancing appearance, corrosion resistance, production requirements and environmental considerations.

3. The Rise of Blacked-Out Finishes

The popularity of blacked-out motorcycles has also changed what manufacturers expect from finishing operations.

A black part is not simply a black part.

Depending on the application, manufacturers may require gloss, satin, matte, anodized, powder-coated surfaces, or PVD finishes or combinations of machined and coated surfaces.

Premium motorcycles increasingly demonstrate how multiple finishing technologies can work together while still being able to meet or exceed corrosion standards and manufacturer warranties.

Modern Harley-Davidson CVO models, for example, have incorporated Black Onyx PVD components alongside gloss black powder-coated wheels and anodized machined details.

For manufacturers, that creates another challenge: consistency.

If several processes are being used on components that ultimately appear next to one another on the finished motorcycle, color, gloss, texture and overall surface quality need to work together.

The finishing process therefore becomes an important part of the motorcycle's overall design language.

4. The Evolution of Powder Coating

Powder coating is already well established in motorcycle manufacturing because it provides a useful combination of durability, corrosion protection, appearance and production efficiency.

Frames, wheels and numerous motorcycle components can benefit from powder-coated finishes.

What has changed is the continued push toward improving the efficiency of the coating process itself.

Newer coating technologies are being developed to reduce process steps, energy consumption and manufacturing costs while maintaining the durability manufacturers require.

For motorcycle manufacturers producing components at scale, these improvements matter.

Saving time on an individual component may seem insignificant. Across thousands of components, however, reducing process steps or cycle times can produce substantial improvements in production capacity and operating cost.

This reflects a larger trend across metal finishing: manufacturers are increasingly evaluating the total process rather than simply the cost of the finishing material.

5. Environmental Impact Influences Finishing Decisions

Environmental regulation is a significant consideration in metal finishing.

Chrome finishing is an important example.

The U.S. Environmental Protection Agency has been examining PFAS discharges associated with certain chrome plating operations. Chemical fume suppressants containing PFAS ( i.e.Forever chemicals ) have historically been used by some facilities to help control hexavalent chrome emissions.

The EPA has also identified alternatives being used within the finishing industry, including PFAS-free fume suppressants and some trivalent chromium processes.

These developments do not mean chrome finishes will suddenly disappear from motorcycles.

They do mean manufacturers and finishing operations increasingly need to consider environmental compliance, wastewater treatment, worker exposure and the long-term availability of finishing technologies when developing production processes.

That makes process selection more complicated than simply determining which finish looks best.

A modern finishing process needs to balance:

• Surface quality
• Corrosion resistance
• Durability
• Production speed
• Material consumption
• Labor
• Environmental requirements
• Waste management
• Cost per finished component
• Those considerations will likely become even more important over the next several years.

6. Automation and Consistency

Motorcycle components can be challenging to finish because of their shapes, contours and cosmetic requirements.

Manual polishing remains extremely valuable, particularly for complex components and applications requiring skilled judgment.

However, manufacturers also face pressure to increase production consistency & manage labor health and safety while trying to keep costs under control.

That is where automation can become valuable.

Automated and semi-automated finishing systems can help control variables such as contact pressure, wheel speed, part movement and cycle time along with quality and consistency.

The objective is not to simply replace manual labor.

The larger opportunity is creating a process capable of producing the required surface finish repeatedly.

For motorcycle manufacturers, consistency is especially important because many finished components are highly visible to the customers eyes.

A surface variation that might be irrelevant on an internal industrial component can become a noticeable quality issue when it appears on a motorcycle tank, wheel, exhaust component or polished engine part.

7. Efficiency Across the Finishing Process

Even as coating technologies evolve, mechanical surface preparation and polishing remain essential to meet the evolving quality & production requirements to be competitive in today’s market.

The final result is often determined long before the final coating or the number of polishing steps.

Manufacturers therefore need to evaluate the entire finishing process.

Selecting the correct combination of abrasives, buffs and compounds can potentially reduce the number of finishing steps required to achieve the desired surface.

The objective is not to simply meet the required finish.

The objective is achieving that finish repeatedly while minimizing unnecessary labor, media consumption, scrap, rework and cycle time.

This is particularly important for motorcycle components where appearance requirements can be extremely demanding.

A process that produces an excellent part but requires excessive labor or frequent rework may not be an effective production process.

8. How Finishes Shape Motorcycle Identity

Perhaps the most interesting change is that surface finishing is increasingly being used as part of the motorcycle's identity.

A polished aluminum component communicates something different from matte black.

Machined aluminum against black anodizing produces another appearance.

A reflective PVD surface can create the visual impact traditionally associated with chrome while providing manufacturers with another method of achieving that appearance.

Finishing is therefore becoming one of leading tools available to motorcycle manufactures to gain a market edge.

That makes collaboration between designers, manufacturing engineers and finishing specialists increasingly important.

A finish that looks impressive on a prototype must still be capable of being manufactured consistently and economically.

The best time to solve those problems is during process development—not after a motorcycle enters full production.

What Will Motorcycle Metal Finishing Look Like Next?

The motorcycle industry is unlikely to move toward one universal finishing technology.

The opposite is more likely.

Traditional mechanical polishing, buffing and chrome will continue to exist alongside powder coating, anodizing, PVD and emerging surface technologies.

The competitive advantage will come from determining which process—or combination of processes—is best suited to a particular component.

Manufacturers will increasingly need to ask:

• Can we reduce the number of finishing steps?
• Can the process be automated?
• Can we reduce abrasive, buff or compound consumption?
• Can we improve cycle time?
• Can we maintain the same surface quality across higher production volumes?
• Can we reduce scrap and rework?
• Can we achieve the desired appearance with a more efficient or sustainable process?

Those questions extend well beyond motorcycles. They represent the direction of modern industrial metal finishing.

Developing Better Motorcycle Metal Finishing Processes

Best Finishing works with manufacturers to evaluate and improve metal finishing operations from initial surface preparation through the final finish.

Rather than looking at a single abrasive, buff, compound or machine in isolation, the goal is to understand how each element of the process works together.

Through site evaluation, process development, product selection, demonstration, implementation and automation, manufacturers can identify opportunities to improve surface quality while reducing cycle time, labor, media consumption, scrap and rework.

As motorcycle designs and finishing technologies continue to evolve, developing an efficient and repeatable finishing process will be just as important as choosing the finish itself.

Looking to improve a motorcycle component finishing process? Contact Best Finishing Inc. to discuss your application, production requirements and surface-quality goals.