FRONT TURN SIGNALS:
Fits on all Harley Davidson motorcycles with 2" Bullet style front turn signals. Will fit other makes that use 2" turn signals with 1157 bases.
REAR TURN SIGNALS:
Harley Davidson motorcycles come with one of two styles of rear LED turn signals, 1156 Single Contact or 1157 Double Contact. If you have a center rear tail light, you will need the 1156 turn signals. If you do not have a rear center tail light, you will need the 1157 turn signal kit.