The main benefit of the two piece is it allows for the rotor to expand and contract separate to the hub. It also allows the rotor maintain better contact with the pad as it wears over time. Temps generally reach higher peak because of less rotor mass, but they cool back down faster. If your rotor gets too hot, you can crack the ring, so taking too much material runs a greater risk of that happening.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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