l have never had any valve issues or any other problems (mechanical)maybe good luck but l dont think so. l have got 3 other mates with crf 250 and 450’s and no one has had any issues . l assumed all the bad talk on the crf’s was an old wives tale! we have found that as long as you clean the air filter after every ride ( everyone does this i know:S ) and maintain the oil you have very few if any issues ( gets expensive oil and filter every 150 to 200 kms but that goes with the territory of owning a crf. i love the honda’s tested yamaha and ktm but still couldnt bring myself to pass up the crf my opinion is it is a great all round bike that suits my hack riding and makes my riding look better than it is GOTTA LOVE THAT
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