Engine Oil Filler Caps - A fantastic combination of technique and style which adds the finishing touch to the engine. The RIZOMA filler cap, derived from the world of racing, is equipped with a safety lock which ensures effective closure in all conditions. Machined from billet, they are subjected to a surface finish which assures high quality and long service life, as well as vast range of colours. It's a good practise to fasten the engine oil filler cap with a safety wire. RIZOMA engine oil filler caps come with with a removable bracket for the safety wire.