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Front forks

scott osborne

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ontario, canada
Does anyone know if the upper tube from a 80 cb750k without air adjust will work on a 1982 cb750k with air adjust? The 82's are badly pitted but the ones from my salvage 80 aren't.
 
Part numbers are different and if you research the 82 fork tube is list as being the same for only the 81-82 models only. And the 80 fork tube is listed as being compatible with the 79-80 K&F models. So my bet is no. Someone with more hands on experience may speak up.
 
But there maybe someone that has taken the chance and found that it may still work with a slight adjustment or a combination or changes such as a different upper cap or spacer.
 
The '80 fork is 35 mm. and the '82 could well be 37mm. since others in '82 moved up the fork size. As well, the early fork tube rides directly in the fork lower, the later one has bearing inserts.
 
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