Limiter rings for throttling scooters via the variator.
These spacer rings reduce the variator clearance on the vario sleeve and thus also the possible maximum speed. Suitable for scooters with 20mm vario sleeve such as 50cc Piaggio, China 4T (BT49QT-9), Kymco or SYM.
Set consisting of 4 vario / spacer rings in the following sizes: - 2mm - 3mm - 4mm - 5mmAI-translation
My '93 Sfera came without any kind of restriction to limit the speed.
Since I want to keep my drivers license I ordered this set to stay inside the legal speed limit.
They fit nicely and seem to be of a strong steel to last a long time.