If you have to undertake repairs on your own KTM 450 SX then it is always recommended to own a Workshop Manual to keep just for a guide in the event you want to know the way to take off a certain part for example the Brake Discs and match it again in the right way.
KTM 450 SX Workshop Manuals offers you precise diagnostic guidelines for your car so if something is wrong it will help you work out what the situation is and how to repair it. After that you can assess if this can be done on your own or that the job is just too big you can make a reservation for your 450 SX right into a nearby garage.
KTM 450 SX manual