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There are several reasons that a two-piece floating disc assembly is of benefit. First, by using an aluminum bell for the hub section of the disc it saves a great deal of weight. Since this is both rotating and unsprung, it benefits the acceleration, braking, and handling of the vehicle. Secondly, ...

Apart from the floating/fixed issue was the hat correct ?? Yes the hat size was correct but you cannot fit a non floating disc to a system expecting a floating disc as if you did you would get severr brake judder and impaired braking efficiency. I know several people who run the one-piece version o...

Porsche partnumbers 965-351-045-00 and 965-351-046-00 should be the front discs - wrong the OEM upgrade kit gives you floating discs whereas these Porsche discs are fixed not floating. The document states this partnumbers are for a one piece disc, why do you want floating discs..? I run 045.00 and ...