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About Traction54

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    TT Newbie

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    Dirt Bikes, Outdoors, Fishing
  1. Traction54

    '03 450 exc died

    After extensive checking and electrical tests, I have just pulled the head and cylinder off and found the compression ring broken. Anyone had this , seems a bit strange to me. compression test led me this way after checking everything else - plenty of spark timing good, fuel ok. Bike has 6000ks and in good order. Bore and valves all in very good order.??? Traction