BULTACO MJ rear sprocket for Bultaco 50 Astro SM MJ Corse MJ.402 €44.46 High quality duraluminium (ergal) rear sprocket for Bultaco 50 Astro SM with chain pitch 420 and with number of teeth from 46 to 54. Select the chain pitch and number of teeth you need by clicking below. Add to cart
Rear - Front sprockets Front sprocket Bultaco Astro SM 50 Marca 2 MJF.117 €25.00 Front sprocket for Bultaco Astro SM 50, available in pitch 415 and 420 and with number of teeth 12 to 18. Choose the pitch and number of teeth you need below. Add to cart
