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  • Anyone Reccomend a kit of valve shims (will check size needed). Swapped them around to the limit with my small stash over the years but finally have i think an eroding exhaust valve seat, so need a different size shim again.
    Bmw/aprillia want £12 per piece, and would be basically guessing at which I need, seen some kits for around £100 for a moderate selection seems about right money?

  • BMW/aprilia so the rotax 4/5 valve a cylinder?

    There are kits but never used them. Try the owners clubs as they may have an exchange scheme.

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