Magimix no longer make the accessories for the 5100 but we do offer the XL Conversion kit
https://www.magimix.com.au/spare-parts/402-xl-conversion-kit-51005200-3519280176734.html
Please note that this kit is not compatible with the G model, if your machine is a G then this will be printed on the serial plate on the underside of your machine.
Please note that if you purchase the XL Conversion Kit then you will need to retain your original master-blade and dough blade as these are not included.