HI- does anyone know which set will fit in the link below? I'm just getting the chrome ones, but is it 1.25 or 1.50"?? for a 2nd gen..

thanks

http://www.jcwhitney.com/product.jhtml;$sessionid$HFTOZFAAACBIEQSNDV1CFFCCJ UOXKIV0?CATID=160755&_requestid=107461