VERTIGO MJ rear sprocket for Vertigo Titanium R 2018-2020 MJ Corse MJ.429 €35.19 High quality duraluminium (ergal) rear sprocket for Vertigo Titanium R 2018-2020 with chain pitch 520 and with number of teeth from 30 to 50. Select the chain pitch and number of teeth you need by clicking below. Add to cart