Pro One turn signal bars fit between the forks and mount to the headlight mounting bolt. Machined from billet aluminum. Come with elliptical amber lenses. Wide Glide version measures 8-1/8" x 3/4" x 1-1/2. Narrow Glide version measures 5-1/4" x 3/4" x 1-1/2. Load equalizer required to properly control the signal action on most models.