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Will 80' GS750 forks fit on a 77' GS750

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    Will 80' GS750 forks fit on a 77' GS750

    I have a 77' GS750 that the forks are rusty and pitted at the top. I found a complete front end off of an 80' GS750. Will it swap? I know the 77 that I have only has the one brake rotor and I believe the 80's has 2......HELP.

    #2
    Originally posted by jim66hotrod View Post
    I have a 77' GS750 that the forks are rusty and pitted at the top. I found a complete front end off of an 80' GS750. Will it swap? I know the 77 that I have only has the one brake rotor and I believe the 80's has 2......HELP.
    Get a caliper and measure the upper tubes, if they are the same it should fit. Won't even have to change out the triple trees. If they aren't the same then you may have some work ahead. I think your 77 has ball bearings for the steering stem no? Where as the bearings in the 80 steering stem are tapered ones.

    Oh yeah where are you located and some pics of what you have would be helpful.
    sigpicMrBill Been a GSR member on and off since April 2002
    1980 GS 750E Bought new in Feb of 1980
    2015 CAN AM RTS


    Stuff I've done to my bike:dancing: 1100E front end with new Sonic springs, 1100E swing arm conversion with new Progressive shocks installed, 530 sprockets/chain conversion, new SS brake lines, new brake pads. New SS fasteners through out. Rebuilt carbs, new EBC clutch springs and horn installed. New paint. Motor runs strong.

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      #3
      The forks will fit straight in to the triple tree. However, the later forks have a leading axle and your brake calipers won't swap over.

      You could make the stanchions work though - the '77 tubes are 613mm long and the '80 ones are 625mm.
      79 GS1000S
      79 GS1000S (another one)
      80 GSX750
      80 GS550
      80 CB650 cafe racer
      75 PC50 - the one with OHV and pedals...
      75 TS100 - being ridden (suicidally) by my father

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