Good quality rear Indian Lambretta crown wheel with 47 teeth. This is the standard sprocket for GP DL models but can be used with series 1, 2 and 3 Li, SX and TV scooters to change the final drive ratio gearing to work with certain exhaust pipes. 
 
Comes without the bush or needle rollers, these are available on this website.
 
Product code: LUAF1605