Kawasaki Two-Stroke Triple Restoration — The UK Guide
Kawasaki Two-Stroke Triple Restoration — The UK Guide
There are motorcycles you restore because they look good on the drive. Then there are the Kawasaki two-stroke triples. The H1, H2, and KH series are fast, impractical by modern standards, and entirely unrepeatable — and once you start, the restoration tends to find its own scope.
If you are considering a restoration — or are already halfway through one — this guide walks through the scope of what a triple restoration involves in the UK, where to find parts, and why the decal stage matters more than most people account for when they start the job.
The Appeal of the Triples
The H1 500 arrived in 1969. The H2 750 followed in 1972. Both were fast enough to make the press nervous and buyers excited in equal measure. The KH series came later — 1976 onwards — smaller-displacement bikes that shared the triple-cylinder two-stroke formula with the earlier bikes but were more refined, more manageable, and produced for longer.
What they share: a three-cylinder, two-stroke engine, air-cooled, producing power in a way that no modern machine replicates. The power band is narrow. The fuelling is unforgiving by current standards. The electrics are the electrics of the era. And the cosmetics — tanks, side panels, frame — are from a period when Kawasaki was competing hard on visual identity as well as performance.
That last point matters for restorers. These bikes looked a very specific way when they left the factory. Getting the mechanical side right is one job. Getting the cosmetics right is another.
Restoration Scope — a Realistic Overview
A full triple restoration touches several disciplines. This guide focuses on what we know directly — the cosmetic and decal stage — but it helps to understand the full picture before you start.
Frame and Running Gear
Triples, particularly the H1 and H2, suffer from frame flex under hard acceleration — a known characteristic, extensively documented in period press. Inspecting the frame for cracks around the steering head and swing-arm pivot is standard pre-purchase advice. Powder coating or paint stripping followed by fresh paint is common. Colour matching to period-correct frame finishes varies by model and year.
Engine
Two-stroke triple engines are rebuildable but specialist. Crank seals, reed valves, cylinder port timing, and ignition advance are the usual focus areas. In the UK, the pool of two-stroke triple specialists has contracted over the decades — research your rebuilder before committing the engine.
For the KH series specifically, parts availability is better than it was a decade ago thanks to small-scale reproduction manufacturing — primarily in the US and Japan, with some UK import routes.
Electrics
Japanese electrical from the 1970s was point-based ignition, simple but aged. Capacitor discharge ignition (CDI) conversions are popular. Wiring looms can be sourced through restoration specialists or reproduced.
Cosmetics — Tanks, Side Panels, Bodywork
This is where the restoration either comes together or falls apart visually. The tanks and side panels on H1, H2, and KH bikes were not interchangeable between years — Kawasaki changed colour schemes, stripe configurations, and graphic weights regularly. Different model years carry different decal placements, different colour values, different graphic weights — sometimes within the same model line.
Getting a respray matched to the correct factory paint code is a starting point. Getting the decals right is the finish.
Sourcing Parts in the UK
The UK classic Kawasaki community is active. There are a few starting points worth knowing:
Owners clubs and registers. UK triple owners have access to community resources. The Kawasaki Triple Resource website is a good place to start. Contact us for current introductions to clubs and specialist contacts — we'd rather point you in the right direction directly than list details that may go stale.
Autojumbles and classic shows. The Lancaster Insurance Classic Motor Show at NEC Birmingham and local VMCC events remain useful for sourcing mechanical parts. (The Classic Motor Show runs in November and includes a Bike Jumble — check current dates before planning.) For cosmetic parts, finds are increasingly rare — which is why reproduction parts exist.
eBay Japan and US. NOS (new old stock) and used parts from Japanese and US dismantlers remain accessible via eBay. Import lead times have lengthened post-Brexit for some categories, but mechanical parts and chrome trim still move reasonably. Budget for import duty and courier costs.
Reproduction specialists. For rubber parts, some gaskets, badges, and cosmetic components, small-run UK and European reproduction suppliers have filled gaps. Research each supplier's reference source before ordering — the accuracy varies.
The Decal Stage — The Final Restoration Step
Most restorers underestimate how long the decal stage takes to do properly. Or they get the mechanics right and rush the cosmetics.
Here is the reality: on a show-quality or road-quality restoration, the decals are what people see first. They are also what's most visibly wrong if they are incorrect. Restorers at shows can tell immediately whether a set is the right year, the right layout, the right colour values. A broadly similar-but-wrong set does more damage to a restoration's credibility than no decals at all.
Why Accuracy Matters
Each model year had specific decal configurations. The H2 750 ran from 1972 through to 1975 — four model years, each with its own colour scheme, graphic weight, and placement. The decal on a 1972 machine is not the same as the decal on a 1974 machine. The graphics, lettering style, and positioning were not arbitrary — they were part of Kawasaki's factory specification for that machine.
Reproductions that are worked up from memory, from low-resolution photographs, or from other reproductions compound errors across generations. A set that was 5% wrong in 1985 becomes 15% wrong when today's reproduction copies that original reproduction.
What Factory-Referenced Reproduction Looks Like
At Orchard Classic Decals, colour matching is against NOS decals or sometimes against the bike itself. Not photographs of photographs. The reference work is done before production, and colour values are verified against original specification — not approximated to look close.
The result: sets that are correct for the specific model and year they cover, not broadly representative of the era.
Application — Getting It Right
Polymeric vinyl with wet-method application is the right approach for tank and panel decals. A link to the fitting guide comes with every order, along with a free printed sample — test your clear coat on the sample before you commit to placing the actual decal.
Once the decal is down and fully dry (allow a few days), 2K clear coat over the top protects against petrol spills, UV, and handling. Do not skip this step on a triple. These bikes see heat cycles and fuel exposure at the tank — a decal without clear coat will not last.
This approach sounds strange, especially as we will get the sticky layer wet — but read on; it does work. Apply a fine mist of water and a couple of drops of washing-up liquid to both the tank surface and the adhesive side of the decal — the decal will slide freely, giving you time to position it accurately before you commit. Squeeze out from the centre using a smoothing tool, work towards the edges, and leave it to dry fully before the clear coat goes on.
If you do crease it, do not panic. Very gently pull the decal away from the tank. Take a hairdryer and carefully warm the vinyl — it will go back to its original shape. You can then start that part again.
A Note on the Workshop
We make these in Norfolk. We're a small operation, and the range covers the H-series triples, S-series, KH 250/400/500, and the trail and enduro line — 1970s through to early 80s, plus a few KE models that ran into the 1990s. We are an approved Kawasaki decal supplier covering two-stroke models: triples, KE/KT/KD/KMX.
If the model and year you need is in the catalogue, you can order directly. If it is not, send us the model and year — we will let you know what is coming, or discuss a custom set if the build warrants it.
Get the Right Set for Your Triple
The range covers H1, H2, S-series, KH 250/400/500, and the trail and enduro line — 1970s through to the early 80s for triples, plus KE/KT/KD/KMX models. Year-specific sets throughout.
Browse the triple decal range →
Any questions about which set fits your specific machine — just ask. Send us the model and year.
Thanks for taking a look. We are a small workshop in Norfolk, making these for restorers who want to get it right. Any questions — just drop us a line.
Valerie and Andy at Orchard Classic Decals
