Top quality, made by Scootopia Lambretta drive sprocket bolt castle spring cap washer, fits all series 1,2, 3 and GP scooters
 Whe have stopped using and supplying the SIP ones due to the discrepancies in quality, these are very well made with deeper 'grooves' in.
 
 
Part number: LUSCOOTNV94XX2
 
 
Price includes VAT @ 20%