derestriction kit for Vespa Primavera 50 Euro4, Sprint 50 Euro4 = NK390.55

This is a discontinued item. We supply you substitute product with order number: NK390.55

Derestriction kit suitable for Vespa Primavera, Vespa Sprint 50 Euro4.

The derestriction kit comes with an ECU that is recognised by the Piaggio tester. After derestriction kit installation the top speed is about 65km/h. Using the Naraku variator NK901.27 or any other sports variator acceleration and top speed can be boosted even more (tuning/adjustment required).

The derestriction kit includes:

• CDI/ECU
• Intake bellow
• Roller weights
• Variator cover replacement bolts