SIGMA magnet for all digital speedometers digital speedometers These speed sensors are responsible for transmitting the rpm rate wheels to the speedometer unit. They are suitable for attachment to either the front suspension wheel assembly or the motor housing at the rear. The different sized connection adapters allow them to be fitted to all common vehicle types. Suitable brackets are also included for easy mounting. The active speed sensors can detect the fastening wheels to record the rotational speed, although a magnet always provides a firmer signal transponder. If you are looking for a simpler plug & play solution, our own SIP speed sensors are ideal! They can be securely fitted into place on your scooter using your existing PIAGGIO speedometer unit installation. Our speed sensors are not only discreet, but also extremely robust and reliable in all conditions. SIP - TIP: Don't forget to order our SIP Speedometer / Tachometer for perfect results! The front fork is not suitable as the complete swingarm assembly moves independently of it.