KB-Racing Speedwheel for Vespa GTS 300 HPE
We have already introduced the
Speedwheel before. Today we take a closer look at the latest offering from KP-Racing and show you in an installation guide how to mount the Speedwheel on your Vespa. With this small, brilliant part, the
speedometer of the GTS is calibrated. An additional benefit: the GTS will now run about
10 km/h faster. So, if the speedometer reads 130 km/h, the vehicle is actually running at a true 130 km/h. The usual speedometer offset of 10 km/h is now eliminated. The Speedwheel replaces the original tone wheel of the ABS. By changing the arrangement of the signal surfaces, the ABS now receives the correct signals for speed detection. Since the HPE models are limited by speed rather than RPM, the engine's RPM increases until the scooter hits the soft limiter at 130 km/h.
Test on Scooter Center Dyno +11km/h
We tested the KB Speedwheel on our dyno to check if the difference was measurable. After installing the Speedwheel, the ABS needs to be recalibrated. This small task can be easily completed in just a few minutes. On the road, the speed increase unfortunately cannot be seen directly on the speedometer. The speedometer will still show 130 km/h, so a test on the road with GPS comparison or on the dyno is necessary to confirm. And indeed: after installing the Speedwheel, our HPE 300 Tech runs a solid
11 km/h faster than before switching to the KB Speedwheel!
Order your Speedwheel here
Note: Although the installation of the Speedwheel is quite simple, we recommend having the installation performed by a specialist workshop.
Installation of the KB Speedwheel:
WARNING: Perform work only on a cold engine!
Place the vehicle on solid ground on the main stand!
List of Tools
- Ratchet 1/2 with SW17, SW24, IS4, IS6, TX40
- Ratchet 1/4 with SW8, TX20
- Side cutters
Material List
1) Remove Exhaust
You will need a ratchet with SW17 and TX40 sockets. Loosen the clamp screw on the exhaust manifold with SW17. Loosen the three bolts of the exhaust body with TX40. Only pull the last bolt on the top left after the exhaust is manually supported downwards. This will prevent distortion of the manifold and damage to the manifold gasket. For vehicles with higher mileage, we
recommend directly replacing the
Vespa GTS Manifold Gasket.
2) Remove ABS Sensor
A ratchet 1/4 with TX20 and SW8 socket is required. Since the ABS sensor is magnetic, there may be metallic wear from the brake system on the sensor surface. This can be easily removed with a cloth. The cable and sensor are sensitive to mechanical damage. Therefore, take care not to damage the sensor and cable during the following work.
3) Remove Swingarm
Loosen the shock absorber nut with SW17. Remove the nut, thrust washer, and shock absorber from the mount. The vehicle frame will sag a few millimeters, which is completely normal. Loosen the two front bolts of the swingarm with IS6 and remove them. Pay attention to the assembly order of the washers and securing washers. Use appropriate side cutters to cut off the cotter pin head from the main axle nut, pull out the remaining ends from the main axle, and remove the securing cap. Loosen the main axle nut with SW24. Remove the nut and the underlying distance washer. Remove the swingarm from the main axle.
4) Remove Tone Wheel
Loosen the original tone wheel with IS4. When removing the screw, make sure the distance rings remain in place.
WARNING! Depending on the model's build, the screws on the tone wheel may be differently secured. If the screws do not loosen easily, the rim must be removed and the area of the tone wheel screw tightened from the inside with a heat gun to loosen the threadlocker. If new screws are needed, use either item
Screw 1667152 or
Screw 1271147 along with
Threadlocker 7676902.
5) Mount Speedwheel
Mount the Speedwheel along with the distance rings on the rim. If new screws are needed, use either article
Screw 1667152 or
Screw 1271147 along with
Threadlocker 7676902.
The rest of the assembly follows in reverse order. The securing cage of the rear wheel nut should be secured with a new cotter pin 3.5 x 32 mm.
Mounting Instructions and Torque Settings
- Tone wheel/Speedwheel bolts, IS4 = 10-12 Nm*
- Rear wheel nut SW24 = 104-126 Nm
- Swingarm bolts at engine housing IS6 = 20-25 Nm (WARNING! Only tighten rear wheel nut after tightening swingarm bolts)
- Shock absorber mount nut SW17 = 40-45 Nm
- ABS sensor bolts SW8 and TX20 = 4-5 Nm*
- Exhaust body bolts TX40 = 20-25 Nm
- Clamp screw at exhaust manifold with SW17 = 16-18 Nm
Settings with *: no official values provided by Piaggio. These values are derived from the DIN table.
Mounting may void any warranty.
The Speedwheel is not approved for public road use.
Use on public roads will void the vehicle’s ABE.
Order your Speedwheel here
SC-Blog: 10km-h-speedwheel-vespa-gts-tuning-fuer-gts-hpe-300/
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