Japans 250 to 400cc hyperbikes from the 80’s and 90’s

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In the late 80’s Japan clamped down on its own motorcycle market, the bikes profiled in this article are how the main motorcycle manufacturers responded to this legislation.

This is a companion article to the one I wrote about Japans 700cc bikes that were designed to skirt American tariffs.
http://www.xs650.com/threads/remembering-japans-hot-700cc-bikes-from-the-80’s.59884/

In the late 80’s motorcycle road racing had reached its zenith of popularity in Japan and the home market was absolutely flooded with large displacement repli-racers. This lead to a rise in accident and fatality rates which many in the government were quite concerned about. Public perception of motorcycle riders were also taking a beating. They were associated with criminals and “anti social behavior”. High schools began banning them on their premises and they were fast becoming social pariahs. Parking is hard to come by in the cities and many / maybe most of them ban motorcycles. All of this led to a whole slew of rules and regulations, taxes, insurance hurdles and inspections that exist to this day. I began researching the Japanese regulations surrounding motorcycles and in a word, they are ponderous. I wont even try to list them all but they make it very hard to own anything larger than 125cc. They have four different class licenses depending on displacement and rider age, and their tests are notoriously difficult. Anything over 400cc is considered a “large motorcycle” and they make it hard to qualify for them. Foreigners living in Japan may not own any motorcycle over 400cc. The list goes on and on….
It amazes me that the country that supplies most of the motorcycles in the world, makes it so hard for it’s own citizens to own them.

So in order to try and satisfy consumer desires for performance and still be in compliance with new strict regulations, the era of 250cc and 400cc , fully faired high , performance , sky high redline, all out sport bikes began.

First up the 250 class, here is a sampling,

They all weigh just a tick over 300 lbs, have very peaky motors with the bulk of the power band between 12,000 - 16,000 rpm , inline fours, air cooled , they average about 45 h.p. , they have scalpel sharp handling, and there are some interesting features on some of them, like aluminum frames, inverted forks, and check out Kawasaki’s ram air intake ducts on either side of the windshield, Honda has them too built into the fairing.
1988 Yamaha FZR250
0B6F07B4-B2B8-4C59-AD09-ED53E731F698.jpeg

1988 Suzuki GSXR250
B4FA585A-D36A-493C-B496-B115C8AB34C2.jpeg

1988 Yamaha FZR250
B709C17F-BBF2-44B4-BD14-DE21CFA8D07E.jpeg


1991 Honda CBR250RR
3D00C6ED-C409-435E-9005-40F698736286.jpeg

1991 Kawasaki ZXR250
CF0FD6D2-A53A-41FD-AA77-173AABC96E20.jpeg


Would you like to hear them run? They sound like Grand Prix cars ( sorta )


And here’s a super short video of the Suzuki screaming past.

End of part one, next up the 400cc sport bikes.
 
Part two , the 400 class.

The 250’s were hot little bikes, but the 400cc bikes was where the real action was.

The factories pulled out all the stops on the 400’s , replica race bikes, standards, two strokes, retro bikes, this is the weight class that got the most attention and diversity, in fact the 400 class is still a very hot market segment for the Japanese home market. As @Raymond noted in my other article, a great many of these 250’s and 400’s made their way to Great Britain and Europe as grey market imports due to stringent annual inspections. Let’s have a look at some of the offerings,

The fully faired sport bikes,
More diverse than the 250’s, you start to see a lot more diversity in the engines and designs.
Honda VFR400R , V-4 liquid cooled
A9DDE1C7-45F8-48FB-89E6-6B92E3B43CB3.jpeg

Kawasaki GPZ400R, in-line four , air cooled
03642584-9413-4D4B-B7F4-049EBB6E1842.jpeg

Yamaha FZR400, in-line four, air cooled
0EAD0FF2-5CB3-4604-89F7-336111208B0A.jpeg

Suzuki GSX400RR, in line four, air cooled
B695A47D-6D61-4CF9-9A3F-57F62ED0753F.jpeg

Honda RVF400, V-4 liquid cooled
B31C7350-7ECE-4EDB-A11E-CE73648D58B1.jpeg


Even bikes imported to Japan were subject to the same restrictions,
These two bikes were sold only in Japan in this displacement size.
Ducati Supersport 400 ( Pantah?) V-Twin , air cooled
FFF75C3F-EF43-4A2F-ABD7-A23CFF9CC346.jpeg


Bimota’s were popular in Japan, again a size only sold in Japan, using the same Ducati motor.
F7521830-1657-4FD5-9E21-E3F01C723A9A.jpeg


The seriously HOT terrible two strokes!
The Suzuki RG400 Gamma,
four cylinder, exotic engine design, water cooled
6D58D9B1-0F7F-47BD-889E-6E3C7C64ECF8.jpeg
077CD928-F91A-40CF-8AAA-7D9677D95E45.jpeg


Here is a short video of the Gamma running ,( video is a 500 with chambers, but the bike is the same )

The AWSOME Honda NS400R, a replica of the bike that Freddy Spenser won the 500cc world championship with. Two Stroke V-3 90 degree , liquid cooled, 72 h.p.
759BC824-159B-4ECB-95A3-C6FDA6908976.jpeg
BE594F61-801C-439F-947F-F07E5FDBD789.jpeg


The Standards,

Kawasaki GPZ400,
naked UJM
484E3B7E-12DC-4D7F-88FF-61442D327516.jpeg

Do I need to tell you what this is?
C0FE5E2B-2B09-466C-9C0D-291B076663CF.jpeg


Honda Hawk 400,
v-twin , liquid cooled
D680E23D-0292-4F14-B673-3A042C4F3973.jpeg


The retro Suzuki Katana 400cc
D0DB0287-2FB0-4445-8139-B0EC2FCD26B9.jpeg

Honda RVF V-4 400 fly by, super short video,

This period of hyper sport 250’s and 400’s didn’t last long, by the late 90’s it was winding down. The factories quit producing them, there are still some running around, many got exported. They still make smaller models for the Japanese domestic market , but they are not the fire breathers of yesterday. Nowadays they are more likely to be something like this 400cc Yamaha SR.
2917D7F9-153D-401F-A9D1-7BBC83B323E4.jpeg

I hope you maybe found this interesting, as always when I really start researching things , I’m surprised by some of the things I learned.
Later!
Bob
 

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I started reading and all I could think of was Suzuki RGV (or big boy RG)

the shop I worked at out of high school specialized in 2 stroke tuning.

Got to ride a dozen or so RGV / RG (fully race tuned) and man what a ride!!! Just screaming down the 3/4 mile empty road by the train tracks was almost too much.
 
I started reading and all I could think of was Suzuki RGV (or big boy RG)

the shop I worked at out of high school specialized in 2 stroke tuning.

Got to ride a dozen or so RGV / RG (fully race tuned) and man what a ride!!! Just screaming down the 3/4 mile empty road by the train tracks was almost too much.

Now that sounds like fun! :thumbsup:
 
Part two , the 400 class.

The 250’s were hot little bikes, but the 400cc bikes was where the real action was.


The factories pulled out all the stops on the 400’s , replica race bikes, standards, two strokes, retro bikes, this is the weight class that got the most attention and diversity, in fact the 400 class is still a very hot market segment for the Japanese home market. As @Raymond noted in my other article, a great many of these 250’s and 400’s made their way to Great Britain and Europe as grey market imports due to stringent annual inspections. Let’s have a look at some of the offerings,

The fully faired sport bikes,
More diverse than the 250’s, you start to see a lot more diversity in the engines and designs.
Honda VFR400R , V-4 liquid cooled
View attachment 193467
Kawasaki GPZ400R, in-line four , air cooled
View attachment 193468
Yamaha FZR400, in-line four, air cooled
View attachment 193469
Suzuki GSX400RR, in line four, air cooled
View attachment 193470
Honda RVF400, V-4 liquid cooled
View attachment 193471

Even bikes imported to Japan were subject to the same restrictions,
These two bikes were sold only in Japan in this displacement size.
Ducati Supersport 400 ( Pantah?) V-Twin , air cooled
View attachment 193472

Bimota’s were popular in Japan, again a size only sold in Japan, using the same Ducati motor.
View attachment 193473

The seriously HOT terrible two strokes!
The Suzuki RG400 Gamma,
four cylinder, exotic engine design, water cooled
View attachment 193474 View attachment 193475

Here is a short video of the Gamma running ,( video is a 500 with chambers, but the bike is the same )

The AWSOME Honda NS400R, a replica of the bike that Freddy Spenser won the 500cc world championship with. Two Stroke V-3 90 degree , liquid cooled, 72 h.p.
View attachment 193476 View attachment 193477

The Standards,

Kawasaki GPZ400,
naked UJM
View attachment 193478
Do I need to tell you what this is?
View attachment 193479

Honda Hawk 400,
v-twin , liquid cooled
View attachment 193480

The retro Suzuki Katana 400cc
View attachment 193482

Honda RVF V-4 400 fly by, super short video,

This period of hyper sport 250’s and 400’s didn’t last long, by the late 90’s it was winding down. The factories quit producing them, there are still some running around, many got exported. They still make smaller models for the Japanese domestic market , but they are not the fire breathers of yesterday. Nowadays they are more likely to be something like this 400cc Yamaha SR.
View attachment 193481
I hope you maybe found this interesting, as always when I really start researching things , I’m surprised by some of the things I learned.
Later!
Bob
Great info Bob and thank you. I was aware of the legislation, and have always loved the smaller capacity JAP bikes.
My favorite being the Honda VFR400 like a mini RC30 race machine.
 
Part two , the 400 class.

The 250’s were hot little bikes, but the 400cc bikes was where the real action was.

The factories pulled out all the stops on the 400’s , replica race bikes, standards, two strokes, retro bikes, this is the weight class that got the most attention and diversity, in fact the 400 class is still a very hot market segment for the Japanese home market. As @Raymond noted in my other article, a great many of these 250’s and 400’s made their way to Great Britain and Europe as grey market imports due to stringent annual inspections. Let’s have a look at some of the offerings,

The fully faired sport bikes,
More diverse than the 250’s, you start to see a lot more diversity in the engines and designs.
Honda VFR400R , V-4 liquid cooled
View attachment 193467
Kawasaki GPZ400R, in-line four , air cooled
View attachment 193468
Yamaha FZR400, in-line four, air cooled
View attachment 193469
Suzuki GSX400RR, in line four, air cooled
View attachment 193470
Honda RVF400, V-4 liquid cooled
View attachment 193471

Even bikes imported to Japan were subject to the same restrictions,
These two bikes were sold only in Japan in this displacement size.
Ducati Supersport 400 ( Pantah?) V-Twin , air cooled
View attachment 193472

Bimota’s were popular in Japan, again a size only sold in Japan, using the same Ducati motor.
View attachment 193473

The seriously HOT terrible two strokes!
The Suzuki RG400 Gamma,
four cylinder, exotic engine design, water cooled
View attachment 193474 View attachment 193475

Here is a short video of the Gamma running ,( video is a 500 with chambers, but the bike is the same )

The AWSOME Honda NS400R, a replica of the bike that Freddy Spenser won the 500cc world championship with. Two Stroke V-3 90 degree , liquid cooled, 72 h.p.
View attachment 193476 View attachment 193477

The Standards,

Kawasaki GPZ400,
naked UJM
View attachment 193478
Do I need to tell you what this is?
View attachment 193479

Honda Hawk 400,
v-twin , liquid cooled
View attachment 193480

The retro Suzuki Katana 400cc
View attachment 193482

Honda RVF V-4 400 fly by, super short video,

This period of hyper sport 250’s and 400’s didn’t last long, by the late 90’s it was winding down. The factories quit producing them, there are still some running around, many got exported. They still make smaller models for the Japanese domestic market , but they are not the fire breathers of yesterday. Nowadays they are more likely to be something like this 400cc Yamaha SR.
View attachment 193481
I hope you maybe found this interesting, as always when I really start researching things , I’m surprised by some of the things I learned.
Later!
Bob
Great info. Thank you
 
This is one of my favorite threads in here in a while. I spent a year in Japan during the late 80's thanks to Uncle Sam and the Corps. My favorite part was the motorcycles that I couldn't see back in the states. I talked to a couple bikers often about the differences between the US system and Japan's when it came to licensing riders and the progressive ladder of cc's the Japanese could ride after much schooling and paying of fees. They were amazed that someone could walk into an American motorcycle shop with a brand new driver's licence and buy any bike size they wanted.
 
I talked to a couple bikers often about the differences between the US system and Japan's when it came to licensing riders and the progressive ladder of cc's the Japanese could ride after much schooling and paying of fees. They were amazed that someone could walk into an American motorcycle shop with a brand new driver's licence and buy any bike size they wanted.

Yeah I remember, decades ago, reading about motorcycle riding in Japan and all the regulations involved. For a guy in Japan to own and ride a Harley, he would’ve had to put an extreme amount of effort and time into it.
Meanwhile here in America, any high school kid ,with enough money to buy one, could ride one without any formal training.
It’s kinda crazy when you think about it!
 
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