Tony-Howes Posted May 20, 2008 Share Posted May 20, 2008 Hi all I have just got a old yb100 (1976 model) tidy bike but in need of a new engine Can anyone confirm that a later models engine would drop straight in? I have also been told that a lot of FS1E parts will fit? I am fairly new to bikes so any help will be much appreciated Many thanks Tony. Link to comment Share on other sites More sharing options...
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