Kübler ABS Sensor Ring / Tone Wheel - Vespa GTS 125 / 300 from 2019 - for 12" or 13" Wheels

The Vespa GTS 300 is officially limited to 130 km/h (in practice this is usually 120 km/h), this is controlled by the ABS sensor ring and the ABS sensor that transmit the current speed to the engine management system.

By installing a different ABS sensor ring with fewer openings (the system counts the number of openings encountered during a full wheel rotation), the system "thinks" the speed is lower than it actually is. This delays the speed limiter's intervention, resulting in a higher top speed, approximately 10 km/h (6 mph) extra.

So no further engine modifications are required, and installation is simple (and easy to restore to the original, if desired). After installation, you only need to recalibrate the ABS system as explained in the scooter manual.

We offer two versions for scooters with 12-inch wheels (the standard wheel size). The difference lies in the number of openings; fewer openings ultimately result in a higher top speed.

The model with 12 inch Z = 42 is suitable for racing purposes, think of racing cylinder, cylinder head, camshaft.

The 12 inch Z=44 is suitable for standard use.

In addition, there is a variant for scooters that have been upgraded with 13-inch wheels.