These classic Honda twins, rely on their valve gear being perfect, both for the rev hungry performance, and reliability. When renewing the valves, replacing the valve cotter should be mandatory. It is not worth the expensive breakage of a dropped valve being hit by the piston, and may be allowing bits of valve to drop in to your cylinder. If you are unsure of what parts you need to order, try checking our online 'parts list' fiche? You will find everything you need for your 125, 160 or 175 sports or touring twin. But beware, staring at these parts lists can become compulsive!
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