The M Maintenanse M4003 driver and passenger backrest is a truly multipurpose backrest and luggage rack system. Once installed, no tools are needed for adjustments, making the switch from rider to passenger backrest a snap. Fully adjustable with incorporated luggage rack; allows you to enjoy longer rides while carrying all your stuff just got a whole lot easier. Includes (1)black backrest pad, (1) backrest assembly, and (1) hardware kit of bracket . The M Maintenanse M4003 driver and passenger backrest is compatible with Vespa GTS 150/Spring/Sprint With mounting bracket.