Authentic vs Reproduction Decals — How to Tell the Difference
Authentic vs Reproduction Decals — How to Tell the Difference
The market for classic motorcycle decals divides cleanly into three categories. Original NOS (new old stock) decals — unused factory originals, still in their packaging, increasingly rare and priced accordingly. Good reproductions — made against proper factory reference, on the right substrate, to the right dimensions and colour values. And poor reproductions — made against other reproductions, or from photographs, or against no reference at all.
The third category is larger than it should be. And the problem for a buyer is that all three can look similar in a product photograph, and even similar in hand, until you know what to look for.
This guide covers what separates them.
The Market Reality
NOS originals are out there, but finding them in the right model and year for your specific machine is a matter of luck and patience. The supply is finite. A decal set that has survived fifty years unused, still in its factory envelope, and corresponds to the exact colour scheme of your 1973 H2 is a genuine find. Most restorers will not find one. Even those who do may find the decades-old adhesive has dried out and the set is no longer usable.
Good reproductions exist because someone — or a very small number of people — did the reference work. Tracked down factory originals. Verified dimensions against period-correct surviving examples. Checked colour values against original specification. A good reproduction made from that reference will be more usable than a crumbling NOS original.
Poor reproductions exist because the barrier to printing vinyl is low and the demand is real. If you can source a worn original or find a photograph, you can have something printed. The result will be approximately right — until a restorer puts it alongside a known-original example and sees the differences.
Knowing which category a set falls into before you buy is the job of this guide.
Six Ways to Tell the Difference
1. Substrate — Paper Backing vs Polymeric Vinyl
Hold the decal. Peel back the carrier layer at a corner.
Original NOS Kawasaki decals from the 1970s were made using different processes and materials to modern self-adhesive vinyl reproductions. Kawasaki used several production methods across their range, and the exact process varied by model and year. What matters for a buyer evaluating a modern reproduction is the substrate: polymeric vinyl with solvent inks is the correct material for a set that will be applied, clear-coated, and ridden. That is what we produce.
Modern reproductions should be on polymeric vinyl — a calendered or cast vinyl with dimensional stability. Polymeric vinyl does not shrink or distort over time the way cheaper calendered materials do. It conforms to compound curves under heat.
What you do not want is cheap calendered vinyl or water-based inks. Polymeric vinyl with solvent inks is the correct substrate for a decal that will be clear-coated, exposed to fuel, and ridden. A seller who cannot tell you the substrate and ink type of what they are selling is a risk.
2. Edge Cut Quality
Look at the cut edge of the decal under good light.
A precision-cut vinyl decal should have a clean, sharp edge — not ragged, not showing fraying, not leaving a visible stepped border around the graphic. Poor cutting — either from inadequate equipment or poor tooling — leaves a ragged edge that lifts under use.
On a good reproduction, the cut is tight to the graphic. There is a small margin but it is controlled and consistent. The edge does not catch when you run your finger across it.
Poor reproductions often have excess margin, uneven cuts, or the kind of stepped edge that comes from cutting equipment that was not maintained or calibrated.
3. Ink Saturation and Depth
Set the decal on a white surface and look at the colour.
Solvent inks on polymeric vinyl produce deep, saturated colour that holds its appearance against the white backing. The graphic should look close to what it will look like on the painted tank.
Water-based inks — used on cheaper substrates — often look washed out at this stage, particularly in the lighter colours. The difference is visible before application, not just after years of UV exposure.
On multi-colour graphics, look at the opaque colours first — whites and yellows on top of dark grounds. A well-executed decal keeps these opaque. A poorly-produced one shows the ground through the lighter layers, or the white has a grey tint rather than holding clean.
4. Colour Accuracy Against Faded NOS
This is where it gets nuanced.
A faded NOS original will not match a correctly-reproduced new decal. The original has fifty years of UV exposure — the reproduction has none. If someone is selling a reproduction and comparing it to a faded original to argue it is "accurate", they have the comparison backwards.
The correct comparison is against a factory colour specification. Original Kawasaki colour codes for each model year exist — the job of a good reproduction is to match those codes at the point of manufacture, not to match a worn existing example.
When a reproduction looks too bright compared to a faded original, that can be correct — not a sign of inaccuracy. When it looks the wrong colour entirely under controlled lighting, that is a genuine problem.
5. Font Fidelity
Typography is where poor reproductions fail most visibly.
The lettering on Kawasaki tank and panel graphics from the 1970s was specific. The letterforms, weight, spacing, and layout were not off-the-shelf — they were drawn graphics, sometimes adapted or originated for a specific model. Whether the source was a bespoke letterform or a period typeface adapted for the application, the result is a specific graphic that must be reproduced accurately rather than approximated.
A reproduction made from a clear, well-documented reference will reproduce the letterforms accurately. One made from a photograph — particularly a photograph of a worn original — will have distortion, thickened strokes where the original has fine lines, or incorrect spacing where the reference was ambiguous.
Look at the thinnest strokes in the lettering. On a good reproduction, they are consistent in weight across the character. On a poor one, thin strokes thicken or vary — a sign the letterform was reconstructed rather than accurately redrawn.
6. Registration on Multi-Layer Art
Many classic Kawasaki graphics are multi-element — a base colour, a graphic layer, and outline or shadow elements that must line up precisely across all layers.
On a correctly produced set, these elements are in registration: the shadow sits exactly where it should relative to the main graphic, the outline tracks the edge of the element at a consistent distance, and there is no visible offset between layers.
Poor registration looks like a slightly blurred or doubled graphic — two versions of the same element that do not quite overlap. This is a production defect from either inaccurate artwork or printing and cutting on equipment that was not properly calibrated.
What to Ask a Supplier
Before you buy from a source you have not used before, these five questions will tell you what you need to know:
- What substrate is this printed on? Correct answer: polymeric vinyl. Any hesitation or vagueness is a signal.
- What reference was used to produce this set? A good supplier will be willing to describe their reference process without giving away proprietary detail. "Original factory reference" or "checked against a period-correct example" is a reasonable answer. "We used a photo we found online" is not.
- Is a sample provided for clear-coat compatibility testing? If not — this step matters. Incompatible clear coats can destroy a decal. A supplier who understands their product provides for this.
- Is this model-year specific? On Kawasaki triples, colour schemes and graphic layouts changed year to year. "Fits H2" without a year range is not a useful answer for a restorer who needs the 1974 set.
- What application method is recommended? A supplier who knows their product should direct you toward wet-method application. If the answer is "just peel and stick", approach with caution.
Our Position — How We Check Ours
We make reproductions. That is what we do — Kawasaki two-stroke classics, covering the triples (H1, H2, S-series, KH 250/400/500) and the trail and enduro range (KE, KT, KD, KMX). 1970s through to the early 80s for triples, plus some KE models that ran into the 1990s.
Colour matching is against NOS decals or sometimes against the bike itself — not matched to a faded existing example or approximated from a photograph. The graphic dimensions and layout are checked before production.
We print on gloss self-adhesive polymeric vinyl using solvent inks — waterproof, longevity proven, suited to outdoor use on a machine that gets ridden.
A link to the full fitting guide comes with every order — wet method, crease recovery, clear coat timing — along with a free printed sample. Test your clear coat on the sample before placing the actual decal.
We are an approved Kawasaki decal supplier.
If you are comparing sets and want to know how a specific set in the range was referenced, ask us. We would rather you understand what you are buying than find out after application.
Find the Right Set
Browse the classic Kawasaki decal range →
Tell us the model and year. We will point you at the exact set.
Thanks for reading. Small workshop, Norfolk. Made to get the bike right.
Valerie and Andy at Orchard Classic Decals
