1971, 75 MT-1, GA1A, GA2A, G3SSA,  GA3, 90S, 90SS, 90SSS , 90TR, G1L, G3TR-A Bush Master, GA5-A, 100TR, G4TR Trail Boss, G31-M Centurion, 125 B1, 125 TR, MB1A Coyote, F6 125 E, F7 175 E, F81-M, F8 250 TR Bison, 350 F5 BigHorn, W1SA,  H1 Mach III 500, 500 SS, A7B, A7SSB, Avenger, A1B, A1SSB, Samurai, A7B, A7SSB, 

 1971 A good year for Kawasaki. Some new bikes like the F6 to F8 Enduro bikes. The last year for some like the A1 and A7 series. Here they are:


 
  75 - 90 cc Bikes            
  75 MT-1 Mini Trail             
 
  The smallest Kawasaki this year, the MT-1  It was called Dynamite in some countries, and Mini Trail elsewhere, the last one probably the best name. The  bike was made very compact with folding handlebar and the fuel and oil vents could be shut so it could be transported in a cars trunk. Power from the 75cc two stroke was 4.2 Hp, it had three gears, centrifugal clutch and the color was Lime Green. This really nice one was found at BIKEPIC. The MT-1 was in production from 1971 to 1975 with only minor changes. It was replaced by the KV75 in 1976.
 
 
           
           
 
 
 
     
 
 
   
   
   
   
               
  GA1A, 90S
&
GA2A, 90SS
         
GA1A  GA1A GA2A GA2A  
GA1A and the GA2A where both updated versions of the 1970 GA1 and GA2. They all got a more modern look, with new seat and front forks, most significant update was the new petrol tank. There were new colors Pearl Candy tone Red and Pearl Candy tone blue.
The GA1A had De Carbon (Sealed-in nitrogen) type rear shocks. Enclosed chain case. It was in production from 1971 to 74
Colour: Black 10.5 HP @8,000 rpm, and 4 gears. Top speed around 100km/h. Read more about the different gear systems here: 
 

The GA2A A slightly modified version of the GA1A, with five gears, different coloring and chain case. Made from 1971 to 74.
Output was  10.5 HP @8,000 rpm. The GA2 remained in production to 1974. The GA2A had a top speed of 110 km/h thanks to its 5 gear.

 
               
  G3SSA
   
The G3SSA replace G3SS from 1970 The bike was modified to look like its bigger brother the A7 models. The petrol tank was new so was the side cover seat and chain case.  This years color was Light Yellow and Bright Orange. The 90cc rotary valve engine produced 10 horsepower at 7500 rpm and featured a rotary 5-speed gearbox with disc valve induction and stainless steel fenders. The G3SS was produced until 1975 and was replaced by the KT100 in 1976.

 
         
  GA3 90SSS
Bush Master
 
 
  The GA3 or Super Street Scrambler 90SSS was made for the Japanese domestic marked. The bike was a scrambler version of the G3 above. And it mostly got the same updates as the G3SSA. Have found very little information about this bike, so if anyone can help me out here it would be very nice.
Compare this bike to the GA3TR below, the GA3 had low front fender, dual clocks, different side covers and 10cc less, otherwise they where much the same.
 
               
 
 
 
 
  <   Specifications all 90ccm bikes   S= Sport (GA1) , SS = Super Sport (GA2), SSS = Super Street Scrambler (GA3)      
               
 

 

 
   100 cc Bikes          
   G3TR-A 100T Bush Master        
         
The G3TR-ABush Master was an heavily updated G3TR. The new bike got the looks fro the 1971 G3S and GA3 above. There was a new petrol tank, side cover headlight housing and seat. Unlike its near cousin the GA3 the Ga3TR had a raised front fender. The engine was bored up 2.5mm to 100cc and now produced 11.5 hp at 8000 rpm. Color: Bright Orange 

1971 was the last year for the G3TR.

 
   Picture Source:    Cycle Chaos       
             
   G4TR-A Trail Boss         
          The G4TR-A witch was first introduced in 1979 got only minor updates for 1971. The color this year was Pearl Candy tone red. Power was still 11,5 hp @8000 rpm. 10 gears, 5-speed, constant mesh, return shift with 2-speed sub transmission, quick change by lever on sub transmission cover. The headlight housing front fork cover and chain case was modified. The muffler cover was chrome plated.  
               
             
  100 GA5-A          
        The GA5A was the big brother to the GA1 and GA2 90cc bikes. Like the G3TR-A its engine was bored  up 2.5 mm to obtain 99cc. Horsepower increased wit one hp to 11.5 at 8000rpm. Gearbox had 5 gears.

There was three colors: Candy Gold, Candy Blue and Candy Red.
The GA5A was in production without any modifications until 1974
 
      The pictures of the blue bike at left was found at:

AUSTRALIAN Kawasaki Riders Forum 

Take a good look, and read what the owner tells us
about his restoration project.
 
         
             
  G31-M Centurion          
  Kawasaki's smallest MX bike the 100cc G31-M Centurion was introduced in 1970 and soon become the fastest 100cc bike of it time. Only changes for 1971 was black striping on the petrol tank.

Read more in the  1970  page.


MB1A Coyote
The Coyote was a real mini bike.  It started life as a 50ccm 2 stroke in 1969. But the small engine wasn't the best so it was for 1970 replaced with a 134ccm four stroke Bridges and Stratton copy.
You can read more about it at Mini Doodle.
Power output was 3.5hp, and it was built from 1969 to 1971 It had a recoil starter, one gear and centrifugal clutch.
 
   
             
 
 
 
 
                 
   
US Cross
models
   
                 
     
US G3TR 
     
                 
 


 
  175, 250 & 350 Off-road bikes    
             
  F6 125


The 125 F6 was introduced in Japan late 1970 as the 125 TR and was given the name Bobcat.  It was introduced worldwide in 1971 as the 125 F6 or 125 Enduro.
The F6 looks much like its bigger brothers the F7 175 , F8 250 or F5 350. Actually the F6 and F7 shared the same chassis and running gear. The F6 had no Hatta  fork and a smaller 18 inch front wheel. The engine produced 14.5 hp at 7500 rpm. A good looking bike.
 
Source: BikePics.Com
                   
  F7 175


The F7 175 cc, same bike as the 125 except the 175 got the Hatta front forks like its bigger brothers and a bigger 19 inch front wheel. And the front fender got a nice black flapper. Power was 18 hp at 7500 rpm. (The picture at left says 21.5 hp.....)
Source:   BikePics.Com       
 
    Bothe bikes had dual instruments with speedometer and tachometer with nice rubber hoods. The gas tank could easily be removed by removing a rubber strap. A forestry approved spark arrestor was standard equipment. All off-road bikes from the F6, F8 to F5 had two spark plug holes in the cylinder head so you can carry a spare spark plug, nice on a two-stroke. The rider could adjust foot pegs heights. There is a five way adjustable rear shock absorber and both bikes have Kawasaki's Superlube automatic oil injection system.  
                   
  250 F8 Bison

 
 

 

 
   
A new model for 1971. (late 1970) Named F8 Bison and a smaller brother to the F5 350. Its heavily based on the 350 and looks like a copy of the 350. The engine had 23.5 hp at 6800 rpm and 5 gears.  One big new feature was the new Hatta front forks. The forks offered three adjustable axel positions and it was possible to raised or lower them around 100mm. And there was a three way spring preload adjuster. All together 27 different settings, not bad for a bike from 1the early 70's. You could also adjust both foot pegs and brake levers. The gear selector could be used on both left or right side sins the gear selector shaft protrudes from both sides of the engine case.

Wheels were made of alloy and the tires had trail pattern. It was a good looking bike! The F8 was produced from 1971 to 72 and was replace by the 250 F11 in 1972 (late 72).  Color was Bright Orange/Ivory
 
   
 
 
 

 
 
     
    All the pictures of the F8 (two different bikes) was found on the Marbles Motors web site. They have restored this bikes to a very high standard. There are more really nice bikes at Marbles Motors, you should take a look, link at right. >    
 
     
 
             
 
 
                   
  250 F81M


 

The Motocross version of the F8 was called F81M. Not a real motocross bike, it was to heavy for that, but it still was lighter and the most capable big bore motocross bike from Kawasaki in 1971. It was only produced in 1971, the engine had 27 hp at 6750 rpm. The color was Lime Green

 

       
 
                   
  350 F5 Big Horn

The biggest of the F series, the F5 Bighorn 350. In its second and last year of production. It was replaced in 1972 by the F9 350. No changes this year other then new colors and marking. The color this year was Lime Green. The first four pictures was found at Marbles Motors excellent website (link above). The last one is a modify F5 with low front fender and the Hatta fork set to its lowest position and turned for a short wheel stand, Nice bike. Se more, go to the 1970 page:
 
                   
 

 

 

 
                 
Japanese TR 250
Japanese TR Series.        
                 
US G4TR
US 175 F7
Enduro 
                 
 

 

 
  Performance 250 to 500    
                   
  H1A Mach III
500
or
500 SS

             
       
           
    In 1969 the color was white, in 1970 it was red and this year blue. But the the color was not the only change for 1971.
The front forks got a stiffer spring and stronger return damping.  Rear shock absorbers are new with much improved damping. The result is improved high speed stability.
Oil pump cable and left hand side crankshaft oil seal have been modified to archive better reability.
Earlier CDI units had trouble keeping water out ant it casing didn't stand up well to hard use.  The new CDI are modified to withstand water and it also got better components and its casing are stronger built. On the drive train the new H1 got a stronger rear chain. And there was a new petrol tank, the color this year was Candy Tone Blue. The model name was H1A
             
 
                   
  350 A7
&
A7SS
Avenger

Model name A7B /A7SSB

             
   
  The 350cc A7 and A7SS was in 1971 in its last year of production. The SS Street Scrambler wasn't replaced, it just disappeared for 1972. The A7 was replaced by the new 350 3-cylinder S2. Only colors and marking was changed for 1971 to Pearl Ivory. Model name in 1971 was A7B and A7SSB
The difference  between the A7B and A7SSB is the SS upsweep exhaust system, the SS have higher handlebars, lower gearing, skid plate and upgraded suspension. The A7B and A7SSB was called Avenger.
Read more about the A1 to A7
at this excellent site:
MotoWasabi

(THE best site about the
A1 to A7 out there)
 
             
 
                   
  250 A1
&
A1SS
Samurai

Model name A1B / A1SSB


             
   
  The 250cc A1 and A1SS was like their bigger brother in its last year of production. The SS Street Scrambler wasn't replaced, it just disappeared for 1972. The A7 was replaced by the new 250 3-cylinder S1. Only colors and marking was changed for 1971 to Pearl Ivory. Model name in 1971 was A1B and A1SSB
The difference  between the A1B and A1SSB is the SS upsweep exhaust system, the SS have higher handlebars, lower gearing, skid plate and upgraded suspension. The A1 and A1SS was called Samurai.
 
             
 
                   
 

 

 
  Four stroke W1SA 1971    
W1SA



More information
about all the W bikes here:

      The W1S had a rather big update for 1971, becoming the W1SA. The most significant update was the movement of the shift lever from right to left side of the engine. Same place as all bikes today have. This was done with some nice mechanical levels on both side of the engine.

There were new colours, the chrome gas tank was gone and new side engine covers made the bike stand out from earlier versions. Brakes was updated, up front a bigger more advanced drum brake guarantied stopping power. The rear drum was much the same as before, but painted black.
Actually a lot of parts was updated, new instruments, new front and rear lights, new indicators and new rear shocks to mention some.
 
     Sill a popular bike in Japan but the engine configuration was  an quite old construction at this time. The W1SA was not exported as the earlier W2SS and TT   Read more:
 
       
                   
 

 

 
  The rest, bikes for sale in Japan and probably some other places        
         
The bikes above where all sold worldwide more or less. If you lived in Japan in 1971, then there was some more interesting machines to choose between. Everything from bikes witch was new in the early 60's to bikes not yet on the American market. You will find those below. There are probably some bikes missing here, if you can help with some information, please send me an I email. (se bottom line)
           
  The 90-TR was the Japanese version of the G4TR (above) Capacity was 89ccm and power was 10.5 hp. Unlike its bigger brother the G4 it had only 5 gears.
>
     
               
  The GA3 or 90SSS. Actually a Bush- Master with regular tires, different paint and a SSS label on the side panel.
>
     
               
  90 G1L was actually new in 1970. It replace the older J1. The engine was the forerunner to the GA bikes. It produced 8.2hp at 6500 rpm. The bike was in production from 1970 to 1972
>
       
             
  125 B1. A replacement for the 1963 B8 the first Kawasaki. The 125 cc bike had rotary valve inlet. 12 hp, 4 gears. Produced in  many different versions from 1965 to 1976. But that was only a name change it lived on to 1980 as the KC125. (last picture this row)
>
 
               
 
             
 
               
 
    Page Made: 03.10.2010    
  Last updated: 29.11.2010    
 
 

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