Ive been looking at oil coolers recently and was wondering if anyone had any thoughts on the sifton vertical mount. It says it fits 57-03 xl models, but mine is a 2010 iron. I thought most vertical coolers were pretty much universal?

 

I got the HD cooler i gotta say its a QUALITY unit i installed a "thermostat" on it to make sure that when its cold it does not make the oil "too cold" most sporties DONT need a oil cooler infact having one if it gets to cold can actually HURT your oil/ engine... My "oil thermostat" opens @ full bore 190deg... it keeps my engine at 200-215 deg since installing it i have never seen it go much more than that (except when i put it on the dyno (235deg F)

You can always install one of these: (of course one made for the sportster)

http://www.ebay.com/itm/JAGG-OIL-OFF...-/400474689381

 

I have run oil coolers on quite a few HD's, including one sporty. Don't think you can do better than a Jagg.