I'm trying to upgrade my front also. Racetech don't have this bike listed so I can't confirm which fork springs to get. Can anyone tell me the fork spring length for this model (1982 GPz750).
According to this the 11-1104 is 19.12" (486mm) long and needs a 1.3 spacer. I'm assuming thats 1.3" which makes the maximum possible spring length 20.42" or 518.6mm.
I'm not a hug fan of the Progressive brand springs as the spring wieghts are pretty low. Being 105kgs (235lbs) and ride the poor girl pretty hard, I don't think they will be up to it.
Looking at the Racetech website, they have springs listed for the KZ1000 which are 500mm long. I'll probably just have to take into consideration the different in the weight of the bikes when choosing my spring rate.
How did you go with this. My GPz has been sitting in the shed, unloved, for way to long. I new front end might be just the tonic I need.
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