With a quantity of four pieces, the Bulb 12v21w is the most used part in the WINKER diagram.
Some items from this specific schematic: Screw Tapping 4x4, Nut, Flange, 12mm, Lens,r.fr.winker, Bolt,flange,8x40.
The most reasonably priced component used on the Xl600v Transalp 1997 (h) Germany / Kph Winker is the Screw,cross 5x10.