Been looking for a new Dizzy cap/ rotor/ backing plate (mostly rotor and backing plate.) The cap I replaced a few years ago, but the backing plate is cracked. Servicebox "seems" to show the cap, rotor and backing plate as being one assembly P/n 594041. Also the price seems to indicate at around $300AUD. Is there a non genuine alternative for all 3? If not am I correct in assuming you get all 3 for that price? Cheers, James.