Accelerator pump kit for twin mikuni carbs
 

I'ts an aftermarket accellerator pump kit, so when you open the trottle it squirts petrol into the inlett, like on a car. It works on 2 strokes and 4 strokes but twin cylinder only.
Full kit, never used, still in box.

http://muchos.co.uk/members/azureus/PumpKit.1.jpg


:D