I know that the 600 twins had top end problems. Did the 500's have the same issues or were they better off than the 600's?
from what i remeber, the 500's where better on longevity than the 600's. clutch wise they where about the same but the 600 had a ring issue where they would catch in the exh port and cause a mess.
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Are we talking about pogo or post 97 twins?
SX twins...