+ 10km / h SPEEDWHEEL - Vespa GTS Tuning for GTS HPE 300

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10km / h faster without changing anything on the Vespa GTS engine?

SPEEDWHEEL - Ingenious tuning part for more top speed from KÜBLER RACING for Vespa GTS HPE 300 models (from 2019)

10km/h higher top speed with your Vespa GTS 300 without changing anything on the engine?
With the changed SPEEDWHEEL tone wheel of Kübler Racing is the very easily possible.
The tone wheel is a slotted steel disc on the rear wheel.
This is used to determine the wheel speed for the ASR / ABS control.

  • Plus 10km / h top speed
  • No intervention in the engine necessary
  • Can be easily retrofitted
  • Not recognizable from the outside
  • No increased wear

Speed ​​wheel Vespa GTS tuning

+ 10km / h Vmax here or there

SPEED LIMITER

Although the Vespa GTS HPE have more power on the rear wheel than their predecessors, the top speed unfortunately does not benefit from it due to an early rev limiter. This is due, among other things, to the somewhat strongly leading speedometer display. At a real 120km / h, the speedometer already shows 130km / h.
From a speedometer of 130km / h, however, the on-board electronics regulate consistently.

TOP SPEED

This is exactly where the new tone wheel from Kübler Racing comes in. What sounds like magic at first is ultimately simple physics. The new tone wheel has a modified geometry, which means that the exact, real speed is now transmitted to the control electronics. Now the displayed 130km / h are also real 130km / h on the road. The rev limiter therefore also takes effect a full 10 km / h later, although the speedometer shows just as much as before the conversion (130 km / h).

Ideally, the higher top speed Confirm with a comparison using a GPS speed measurement (e.g. via mobile phone) before and after the retrofit.
In the stored performance diagram you can see the difference in how many km / h the rev limiter works before and after the conversion:

Performance diagram Speedwheel Vespa GTS

ASSEMBLY & ASR RECALIBRATION

For conversion, the exhaust and the swing arm on the right (in the direction of travel) of the vehicle are dismantled. After simply replacing the tone wheel (screwed to the rear wheel rim / using 5 M6x20 hexagon socket screws), only the ASR system recalibratedthat was all.

Operating manual

The ASR recalibration can use our Instructions can simply be done by yourself.

Order your Speedwheel here