Steel wool does not hurt chrome,...Abrasive SCOURING pads do..
Rigid, I do not ASSume chain/sprockets need to be changed, I inspect them, if its low mileage they should not be worn out.. Not all bikes need that much, the 74 I am riding has nowhere near a grand into it, and I have ridden it 700 plus times.. the day I picked it up, I rode it to Bonneville next day.. , got a chain and tire on it on the road in 09 for 120 bux. I guess you can spend more but not every bike needs it..