WELL last night i installed the osram h4 light bulb recommended here and DR. FEELGOOD WILDPIG SAYS: great light,, easily worth the money.. no over heating issues and getting a close eye on the wiring harness at headlight. definity a buy-- and since i run a springer-- only 1 5 3/4 oem headlight-- adequate lighting has always been an issue.. why ruin the looks of a springer with aux or extra lights installed? thats whole reason for the springer--- clear open exposed front end...................... yes by all means try the off road asram 100/80 h4 bulb.