Highsider Apollo Classic LED Turn Signal The Highsider Apollo Classic LED Turn Signals provide a classy and compact design while delivering exceptional brightness and performance through undistorted SMD technology. Features: Intense SMD technology Aluminum housing Smoke lens Laser-etched log 4-wire run/turn/brake functionality Dimensions: 38mm L x 21.5mm W x 22mm H Bolt spec: M8x1.25 thread Sold as a pair