i own a well kept rd

hi frnz…i own a well kept rd but now a days its not goin to its limits,not goin above 125 kmph…wat shud i do ?…replacing the cylinders wid new piston wud work ?…or anythin else ?i jst wnt to get it in brnd new condition ,…wt to do ?& frm whr can i get its brnd new original ‘pricol’ speedometer plz snd ur suggestions:-’anoop_khaira@yahoo.com’