NEW S&S Cycle pair (front & rear) electric compression releases with new rubber boots used on all Big Dog models from 2004-11. Including 05-07 with TP heads.
If your starter is having a hard time to start your compression releases may be the culprit as carbon builds up over time.
Originally 2003 models did not come with compression releases but the heads are already tapped. Compression releases could have later been added or can still be added if your 2003 is hard to crank! You will have to do a little additional wiring for these to work on a 2003.