Are we absolutely certain about that Doc? If I look up the available accessories for a 2009 SERG in the on-line catalog, it does not list a front end lowering kit. If I look up the 2009 standard RG, it does list a Profile lowering kit for the front end. This would tend to make me believe the kit is already on the SERG, if I can assume H-D is following their normal conventions in the catalog.
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Profile® Low Touring Front Lowering Kit
Place the rider's feet firmly on the ground. This kit utilizes components designed to provide a 1" decrease in ride height. This product is available in multiple variations. Be sure to look for the one that fits the specific model and year of your motorcycle.
54564-09
Fits '09-later Touring models (except FLHR, FLHRC, FLHP, FLHPE, FLTRSE3, FLHXSE and Trike models). Must only be installed on vehicles equipped with Profile® Low Touring Shocks P/N 54635-09. Can be installed on FLHX and FLTRX models with Original Equipment rear shocks.
MSRP US $149.95
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If I remember correctly, I believe hd-dude posted some time ago that the FLTRSE3 was lowered front and rear, based on actual part numbers listed in the parts books. Of course, my memory isn't exactly like a steel trap, if you know what I mean.
Jerry