Japanese Motorcycle Brands (2026): The Big 4, Every Parts, Helmet and Riding-Gear Maker — and How to Buy JDM Parts From Japan

TL;DR

As of September 2026, the Japanese motorcycle brands that still build complete bikes are exactly four: Honda, Yamaha, Suzuki and Kawasaki. Everything else with a Japanese name on it — Yoshimura, Moriwaki, Kitaco, Daytona, Arai, SHOEI, OGK Kabuto, Kushitani, RS Taichi, NGK, Nissin, Showa, D.I.D — is a parts, helmet or riding-gear brand, and that second group is where buying from Japan actually saves you money.

• The “big 4” is a real thing, not a slogan. There are four Japanese motorcycle manufacturers left, and there have been dozens more — Meguro, Rikuo, Lilac, Tohatsu, Hodaka and Bridgestone all built bikes and all stopped.
• Whole bikes are the hard import; parts are the easy one. A complete motorcycle needs shipping, customs clearance and a road-legal path in your country. A gasket set, a Yoshimura pipe or a set of Kitaco levers is just a parcel.
• Helmets are the trap. Arai itself warns that each market requires different standards and that you should never buy a helmet from outside your market^[5]. A Japanese-market helmet carries JIS/SG, not DOT or ECE.
• Japan-market prices are published and low. A Kawasaki MEGURO S1 lists at ¥742,500 and a Z125 PRO at ¥352,000 including tax^[4].
• The domestic parts brands are the real prize. Kitaco, SP Takegawa, Daytona and Kijima catalogues are enormous, cheap and almost never distributed abroad.

The big 4 Japanese motorcycle brands

Ask how many Japanese motorcycle manufacturers there are and the honest 2026 answer is four. They are usually called the big 4, the Japanese big four, or simply Honda–Yamaha–Suzuki–Kawasaki, and between them they cover everything from a 50 cc scooter to a 1,441 cc supercharged hyperbike.

Two small corrections to things people repeat online. Yamaha Motor is not the piano company — it is a separate listed company founded on 1 July 1955^[2], and it is based in Iwata, Shizuoka, not Hamamatsu. And Suzuki did not start as a car company: it was incorporated in March 1920 as Suzuki Loom Manufacturing, and only became Suzuki Motor Co., Ltd. in June 1954^[3].

Honda

Honda is the largest motorcycle manufacturer on earth by volume, and the Super Cub is the most-produced motor vehicle in history. For an overseas buyer the interesting Hondas are the Japan-market small bikes — Monkey 125, Dax 125, CT125 Hunter Cub, Super Cub C125, Grom — because the aftermarket for them inside Japan is bottomless and the parts are tiny and cheap to ship.

Yamaha

Yamaha is the design house of the four. The SR400 (discontinued but everywhere on the used market), the XSR range, the YZ motocrossers and the Ténéré adventure bikes are what people cross-shop. Yamaha’s accessories arm, Y’S GEAR, sells a Japan-only catalogue of luggage, screens and Zenith helmets.

Suzuki

Suzuki built the GS, the GSX-R, the Katana and the Hayabusa. It is also the brand with the deepest link to the tuning world: Yoshimura agreed to develop race machines with Suzuki in 1976 and won the first Suzuka 8 Hours on a GS1000 in 1978^[7], and Yoshimura still develops official race kit parts for Suzuki.

Kawasaki

Kawasaki is the heavy-industry one — the same group builds trains, ships and robots. Its Japanese catalogue is the most retro of the four right now: alongside the Ninja and Z families it sells the W800, and it has brought back the pre-war MEGURO marque as a two-model retro line, the K3 at ¥1,419,000 and the S1 at ¥742,500^[4].

Those are list prices inside Japan, which is the number most overseas readers actually want:

Japanese scooter, dirt bike and ATV brands

There is no separate list of Japanese scooter brands — scooters come from the same four. Honda (PCX, Dio, Lead, Giorno), Yamaha (NMAX, Aerox, Vino, Jog), Suzuki (Address, Burgman, Let’s) and Kawasaki (which stays out of scooters almost entirely). The same applies to dirt bikes: Honda CRF, Yamaha YZ, Suzuki RM-Z and Kawasaki KX are the four families, and Kawasaki alone lists the KX65 at ¥390,500 and the KLX230 at ¥616,000^[4]. Japanese quad/ATV production is Honda, Yamaha, Suzuki and Kawasaki as well.

If you are searching for a “Japanese kick scooter” or a “Japanese electric scooter” you are in a different market again — those are made by general toy and mobility firms, not the motorcycle makers.

Scooter searches split further than most people expect. The Japanese market has maxi scooters (Yamaha TMAX and XMAX, Honda Forza and X-ADV, Suzuki Burgman), delivery scooters (the Honda Gyro three-wheeler and the Super Cub Pro, both fixtures of Japanese cities), three-wheel scooters (Gyro, Yamaha Tricity), kids’ and folding kick scooters from toy and mobility makers rather than motorcycle firms, and a growing electric scooter segment for adults where the interesting Japanese products are the Honda EM1 e: and the small e-mobility start-ups. Dirt-bike searches split the same way — a Japanese dirt bike for kids means the Kawasaki KX65 and KLX110R or the Honda CRF110F, while “Chinese vs Japanese dirt bike” is a question about parts availability and resale value, both of which favour the Japanese four. Graphics kits and jerseys for them are a domestic aftermarket of their own.

Old, vintage and classic Japanese motorcycle brands

Before the big four consolidated the market, Japan had well over a hundred motorcycle builders. The names you will meet on a vintage forum or in a barn find are: Meguro, Rikuo, Lilac, Tohatsu, Bridgestone (motorcycles), Hodaka, Marusho, Cabton, Pointer, Yamaguchi, Showa (motorcycles), Olympus, Miyata, Abe Star, DSK, Hosk, Mizuho, Monarch. Meguro was absorbed into Kawasaki, which is why the name could be revived; Rikuo built Harley-Davidsons under licence; Bridgestone, better known for tyres, sold two-strokes worldwide in the 1960s and then stopped so as not to compete with its tyre customers.

Parts for these do exist, and they are almost exclusively traded inside Japan — which is exactly the problem a proxy solves.

Japanese motorcycle helmet brands

Read this before you buy a helmet from Japan. Arai’s own market-selection page carries a warning that each world market requires different helmet standards and that you should never purchase helmets from outside your market, as they may not comply with the legally required standards for your country^[5]. SHOEI says the same thing more quietly: specification and product line-up vary depending on country or area^[6]. A Japanese-market lid is certified to JIS T 8133 and carries an SG mark and, for some categories, a PSC mark; it is not automatically DOT (US) or ECE 22.06 (Europe) approved. Buy a Japanese helmet for track use, for a Japan-only graphic, or because you have checked your own local rules — not on the assumption that a helmet is a helmet.

Japanese motorcycle clothing, jacket and riding-gear brands

This is the category with the widest gap between what exists in Japan and what is exported: Kushitani, RS Taichi, KOMINE, GOLDWIN, HYOD, Rough&Road, NANKAI, DEGNER, Y’S GEAR, Urban Rider, ELF, Motorhead, KADOYA, Liugoo Leathers. Kushitani is the leather specialist and the closest thing Japan has to a couture racing suit maker; RS Taichi and KOMINE dominate the mid-range with mesh and armoured textile; GOLDWIN is the technical outerwear house; KADOYA and Liugoo are the heritage leather names. Sizing runs small — a Japanese L is roughly a European M — and almost none of it is stocked outside Asia.

Kitaco Super Throttle Pipe — Cross Cub 110 / Monkey 125 / Super Cub C125 (¥637)

$4.40

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NGK MotoDX spark plug CPR7EDX-9S 96553, motorcycle-only (¥1,340)

$9.25

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KOMINE GK-270 Protect Mesh Gloves, black (¥2,788)

$19.24

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OGK Kabuto SHUMA NOVA full-face helmet, graphic (¥30,600)

$211.14

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Japanese motorcycle parts brands — the part of the list that saves you money

Yoshimura deserves its own paragraph because it invented a piece of the modern motorcycle. Hideo Yoshimura founded Yoshimura Motors in Fukuoka Prefecture in 1954, tuning bikes largely for American servicemen who nicknamed him “POP” — the Japanese word for dad^[8]. In 1971 his shop fitted the world’s first prototype racing collector exhaust to a CB750 at the Ontario 250-mile race, and in 1972 it put the world’s first production 4-into-1 system on sale for the Kawasaki Z1 and Honda CB^[7]. Every aftermarket header you have ever seen descends from that.

The fastener problem nobody warns you about

Searches for a “Japanese motorcycle bolt kit”, “nuts and bolts fasteners” or a “Japanese motorcycle connector kit” are all the same underlying issue: Japanese bikes use JIS fasteners and JIS-pattern cross-head screws, which are not Phillips. Use a Phillips driver on a JIS screw and you will round it out. Likewise the electrical connectors are Sumitomo/Yazaki series, not Deutsch or AMP. Buying a JIS driver set, a JIS-spec bolt kit and a Sumitomo connector assortment from Japan costs very little and is the single highest-value first order for anyone restoring a Japanese bike.

Where Japanese bikes and parts are actually traded

All of these have the same wall: they sell to Japanese addresses. That is the entire reason proxy buying exists. If you are new to it, start with our comparison of the best Japan proxy services and the fee-by-fee breakdown of which proxy service is actually cheapest, then come back here. If auctions are new to you, what Yahoo Auctions is and how the bidding works explains the mechanics.

How to buy Japanese motorcycle parts from Japan: the 6-step SOP

1. Identify the part by Japanese part number, not by model name. Honda/Yamaha/Suzuki/Kawasaki part numbers are printed in the parts catalogue and are the only reliable search key. “CB400SF exhaust” returns noise; 18300-MCE-000 returns the part.
2. Search the Japanese term as well as the English one. Exhaust is マフラー, brake pads are ブレーキパッド, gaskets are ガスケット. Sellers write the Japanese word; a search in English simply misses them.
3. Check whether it is a prohibited air cargo item. Lithium batteries, fuel-wetted carburettors and tanks, oil, airbag units and pressurised shocks are restricted or banned. A dry, drained part ships; a fuel-smelling one may be rejected at the counter.
4. Get the item to a Japanese address with a proxy. With OneMall you paste the listing URL, we buy it, it arrives at our warehouse, and you see photos.
5. Consolidate before you ship. Motorcycle parts are dense and small — plugs, gaskets, levers, sprockets. Ten small items in one box is dramatically cheaper than ten parcels, and dense boxes are the case where actual weight, not volumetric weight, sets the price.
6. Pick the courier by size, not habit. For a light, bulky item (a helmet, a fairing panel) volumetric weight decides the bill; for a heavy, small one (a crank, a set of discs) actual weight does. Compare both before you confirm.

What you can and cannot realistically import

Japanese motorcycles by riding style

Most “best Japanese motorcycle” searches are really style searches. All four makers cover almost every style, so the useful answer is which model family to look at:

One piece of vocabulary worth knowing: a UJM, or universal Japanese motorcycle, is the standard air-cooled inline-four naked bike of the 1970s and 80s — CB750, Z1, GS750, XS1100. It is the single most commonly restored category of Japanese motorbike, and it is the reason the vintage parts market described below exists.

The biggest and most famous Japanese bike brands are the same four in the same order; when a list is “ranked” it is usually ranked by global sales, which puts Honda first by a wide margin. The most expensive Japanese motorcycle brands, in the sense of highest list price, are the flagship models rather than separate brands — the Gold Wing, the Hayabusa, the Ninja H2 and the Kawasaki Ninja H2 SX at ¥3,135,000^[4].

Helmet graphics, jackets, jeans, boots, tyres and batteries

Japanese-motif helmet designs are their own search category — cherry blossom, dragon, demon and oni mask, flag, koi and hannya graphics are common on Japanese-market lids and on custom paint shops’ portfolios. OGK Kabuto’s graphic models and the domestic custom painters are where these live; buying one abroad means buying a Japan-market helmet, with the certification caveat above.

For apparel: Japanese motorcycle jackets come from Kushitani, RS Taichi, KOMINE, GOLDWIN, HYOD, KADOYA and Liugoo; motorcycle jeans and riding denim from KOMINE, HYOD, Uglybros and Japanese selvedge houses (see our Japanese selvedge denim guide); boots from RS Taichi, KOMINE, ELF and GAERNE’s Japanese distribution; gloves from all of the above. Japanese motorcycle tyres — tires, in American spelling — means Bridgestone, Dunlop Japan and IRC — and the Japanese-market compounds and sizes differ from the export ones. The motorcycle battery brands are GS Yuasa and Furukawa; do not try to air-freight either.

Where Japanese bikes and parts are traded: auctions, dealers and junkyards

The Japanese used-bike market runs on a handful of channels that most overseas buyers have never heard of. Goo Bike is the dominant used-motorcycle listing site; BDS and JBA run the wholesale motorcycle auctions that dealers buy from; individual sellers use Yahoo! Auctions and Mercari. Dismantlers — the Japanese equivalent of a bike junkyard — sell take-off parts through those same marketplaces. Wholesale exporters advertise “Japan motorcycle imports” to Australia, New Zealand, Canada and the UK; they are the right route for a complete bike, and a very expensive one for a single part.

For parts specifically, the practical route is: search the Japanese marketplaces yourself, then use a proxy to buy and consolidate. Dealer stock from Webike, NAPS and 2Rin-kan is listed on Rakuten and Amazon Japan, and the official maker sites (Honda, Yamaha, Suzuki, Kawasaki Japan) publish the parts catalogues you need for part numbers even though they do not sell to you directly.

Body parts, tools and the words themselves

The body and chassis parts people import most are fairings and cowls, handlebars (Hurricane and Daytona are the domestic bar brands), levers, mirrors and rear sets — small, high-value, and often discontinued abroad long before they are in Japan. The one tool to buy with them is a JIS screwdriver set. Parts suppliers, dismantlers and dealers all list on the same marketplaces.

Vocabulary, since the words themselves are searched: JDM means Japanese Domestic Market — the spec sold inside Japan; a pit bike is a small-wheel mini bike (Honda’s Grom and Monkey 125 are the Japanese archetypes); 50cc scooters are the gentsuki class above; and scooter in Japanese katakana is スクーター, which is the word to search with. The white-uniformed Japanese motorcycle cops ride shirobai — Honda CB1300P machines — and the bosozoku, yankee and yakuza imagery attached to Japanese bike culture belongs to the 1970s–80s custom scene rather than to any current brand.

Japanese motorcycle culture, and the trip you are probably also planning

Two things overseas riders ask about constantly. First, licence classes and displacement limits: Japan splits motorcycles into gentsuki (up to 50 cc), small two-wheel (up to 125 cc), ordinary two-wheel (up to 400 cc) and large two-wheel (over 400 cc), and bikes over 250 cc require the periodic shaken roadworthiness inspection. That 400 cc line is why Japan has a deep catalogue of four-cylinder 400s that never reached Western showrooms — the single biggest reason to import a JDM bike or its parts.

Second, culture: bosozoku and kaido racer styling, the Suzuka 8 Hours endurance race, the Japanese motorcycle Grand Prix at Motegi, the Tokyo Motorcycle Show each spring, the Honda Collection Hall museum at Motegi, touring magazines such as Young Machine and the ritual of the mountain-road touring trip. Riders visiting Japan hire rather than import: rental fleets in Tokyo and Osaka cover most of the modern line-up, and the classic routes — the Izu peninsula loop, the Noto peninsula, Hokkaido in summer — are why so many searches pair “Japan motorcycle” with “tours”, “roads” and “road trip”.

If you meant bicycles, not motorbikes. The same search words pull in Japanese bicycle brands — Bridgestone, Miyata, Panasonic, Araya, Fuji, Kalavinka and Nagasawa for frames; Shimano, Nitto, Sugino, MKS pedals, Fujita and Kashimax saddles, and NJS-stamped keirin parts for components. That is a different market with a different guide: see our NJS and keirin bike parts guide.

The rest of the gear list, and the events calendar

The parts of the wardrobe nobody lists: riding pants (KOMINE, RS Taichi and HYOD all make armoured trousers and riding jeans), boots, seat covers and comfort seats (Daytona’s COZY seats are a Japan-market staple), tank bags, and the branded keychains, patches and pins that every Japanese maker sells through its own goods line. For beginners the popular first purchases are a helmet, gloves and an armoured mesh jacket, in that order.

The Japanese calendar of motorcycle events, exhibitions and festivals is short and worth knowing: the Tokyo Motorcycle Show in spring, the Osaka Motorcycle Show just before it, the Japan Mobility Show in autumn, the Suzuka 8 Hours in summer and the MotoGP round at Motegi. Maker museums — the Honda Collection Hall at Motegi and the Yamaha Communication Plaza at Iwata — are free or near-free, and both hold the oldest surviving machines from each brand. The oldest Japanese motorcycle marque still trading under its own name is Suzuki, whose parent company was incorporated in 1920^[3], although it did not build motorcycles until much later.

Official brand websites, dealers and the aftermarket around them

Each of the four runs a Japanese-language site that is the authoritative source for the domestic line-up and for the parts catalogue, and a separate global site for export models. That split is the reason a model can exist on the Honda Japan motorcycle website and simply not appear on your country’s. None of these official websites sells to an overseas address; the Japanese dealership network, the wholesale distributors and the online motorcycle store fronts on Rakuten and Amazon Japan all work the same way.

Around them sits an aftermarket of companies most people never see: spare-parts specialists, dismantlers, custom and modification shops, and the decal and sticker printers that supply the Japanese show scene — Yoshimura, Moriwaki and the maker logos themselves are among the most-copied motorcycle decals in the world, which is a good reason to buy the official ones. Japanese motorcycle fashion and riding outfits are their own trend cycle, tracked by the domestic magazines and by the concept models each maker shows at the Tokyo Motorcycle Show and the Japan Mobility Show.

Two more corners of the culture that keep coming up: Japanese motorcycle brands in movies and anime — Kaneda’s bike in Akira is a fictional machine, but the Honda and Yamaha models that fill Japanese film and manga are real and mostly domestic-market; and the WW2 era, when Rikuo built Harley-Davidsons under licence for the Imperial Japanese Army, which is why pre-war Japanese motorcycle history reads as a Harley footnote. Japanese motorcycle imports to Australia, Canada, the UK and New Zealand (NZ) are handled by specialist exporters rather than the makers.

FAQ

How many Japanese motorcycle manufacturers are there?

Four that build complete road motorcycles today: Honda, Yamaha, Suzuki and Kawasaki. Historically there were well over a hundred, and roughly two dozen of those names still turn up on the used market.

What are the big 4 Japanese motorcycle brands?

Honda, Yamaha, Suzuki, Kawasaki — in that order by global motorcycle volume. Some lists put Kawasaki last because it is the smallest of the four in motorcycles, even though its parent group is the largest industrial company of the set.

Are Japanese motorcycle parts cheaper bought inside Japan?

For domestic-market brands, yes, and often dramatically — Kitaco, SP Takegawa, Daytona and Kijima have little or no export distribution, so the alternative is a specialist reseller’s markup. For globally distributed parts (NGK plugs, D.I.D chains) the gap is small once shipping is counted.

Can I use a Japanese-market helmet in the US or Europe?

Not automatically. Japanese-market helmets are built to JIS T 8133 with SG certification, and Arai explicitly warns against buying helmets outside your own market because they may not meet your country’s legal standards^[5]. Check your local law first.

What is the difference between a JDM motorcycle and an export model?

Usually the power output, the speedometer, the lighting and sometimes the whole model. Japan had a domestic 250 cc/400 cc licence-class market that produced bikes — four-cylinder 400s especially — that were never sold in the West at all. Those, and their parts, are the reason people import.

Related reading

• Japanese guitar brands — the same “the badge is not the factory” problem in another industry
• Japanese clothing size conversion — read this before you buy riding gear
• JDM fishing tackle and JDM golf clubs — the other two categories where the Japanese domestic spec differs from the export one
• Seiko from Japan — the same “reverse import” economics, applied to watches

Last updated: 10 September 2026. Prices quoted from Japanese listings and manufacturer pages checked on 10 September 2026.

References

1. Honda Motor Co., Ltd. — Company Overview and Corporate Profile. global.honda
2. Yamaha Motor Co., Ltd. — Overview, Company information. global.yamaha-motor.com
3. Suzuki Motor Corporation — Outline. globalsuzuki.com
4. Kawasaki Motors Japan — Japanese-market model line-up and manufacturer’s suggested retail prices. kawasaki-motors.com
5. Arai Helmet — market selection page and standards warning. arai.co.jp
6. SHOEI — SHOEI Worldwide distributor index. shoei.com
7. Yoshimura Japan — company history (沿革・歴史). yoshimura-jp.com
8. Yoshimura Japan — founder Hideo Yoshimura, “POP Yoshimura”. yoshimura-jp.com