Rear - Front sprockets Front sprocket for Rieju Aventura 125 (Estria 5 mm) Marca 1 MJF.217 €5.83 Front sprocket for Rieju Aventura 125 (Estria 5 mm) available in pitch 428 and with number of teeth 14 to 17. Choose the pitch and number of teeth you need below. Add to cart