If the scooter does not have any directional stability, or has a spongy road behaviour we recommend checking the upper and lower steering head bearings. It is easy to check the functionality with an unloaded front wheel. Simply jack up the scooter on the centre stand and move the steering shaft with the wheel control back and forth in the direction of travel. If the steering column shows clearance it is necessary to either retighten the upper nut or to replace the bearings. Checking the bearing shells is also recommended at the same time. We stock the individual bearings/balls as well as complete headset bearing sets.
SIP-TIP: With the steering head bearing key it is possible to open and lock the upper attachment professionally. With the appropriate punch bearing and retraction tool, changing the bearing shells is as easy as pie!
The SIP steering column bearing kit for the Vespa VNA/VNB/VBA/VBB models replaces the original loose ball-bearing version. This finally brings these models into line with the later produced models. If you have ever attempted to replace the originally included type then you will appreciate the simplicity this necessary update provides. The surface is treated with nitrogen for an increased durability and protection against corrosion compared to the original items.