Yes they are, I just bought an antigravity battery from Michel. Email them [email protected]I've been tracking my car on the Audi CCBs for a while now and feel that I am possibly due to replace the rotors. I need to get them weighed to see if they are still in spec. I remember Ape Factory, aka Red Mist Racing was offering a "Better" CCB rotor to replace the stock Audi CCBs in kind. Has anyone either tried them or are you aware of his presence in or around the forums anymore?