Portions of this thread were moved here from another thread in which the discussion got started.
Only if it needs them and that's easily checked by grabbing the rear wheel and trying to move it side to side. Remember, they only move up and down about 30° or so and unless totally rusty and never lubed once (or holeshots/drag strip activity done with it regularly) they usually don't wear badly, but that depends on what material your bike's version was made of and the conditions under which the bike was maintained and stored have a lot to do with it as well. If you do replace them, see if bronze bushings are available for it. I put them in my 450 but the DOHC 450 came with a fibrous type of bushing well known for wearing easily and getting brittle and crumbling with age.
(I should do swingarm bushings, too…)
Only if it needs them and that's easily checked by grabbing the rear wheel and trying to move it side to side. Remember, they only move up and down about 30° or so and unless totally rusty and never lubed once (or holeshots/drag strip activity done with it regularly) they usually don't wear badly, but that depends on what material your bike's version was made of and the conditions under which the bike was maintained and stored have a lot to do with it as well. If you do replace them, see if bronze bushings are available for it. I put them in my 450 but the DOHC 450 came with a fibrous type of bushing well known for wearing easily and getting brittle and crumbling with age.
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