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Why such small rotors ?

And...how well will the aluminum hold up to the stress there, does it need heat treating or anything ? (I don't really know...just curious)

And it was in the mid 90's here the past 2 days...finally cooled down into the 80's today, so was nicer in the garage too.

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Well the stock Mercedes was 37lbs I think I read, these are 19lbs. Aluminum hubs have been used for years in circle track racing. Wilwood has aluminum hubs for street use too. These are thicker were it counts and I built in the rotor mounting plate/hat. Ya in another month or two it will be in the 90's here too, then I'll be complaining it's too hot?

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Could have went carbon rotors...I recently shipped some to a buddy in Oz. 15.5" in diameter was only about 15 or 16 pounds from memory. Around $1200 or $1300 a piece as well though..


Nice looking setup though, and knew of aluminum hubs being used in racing setups, just wasn't sure what might have been done to them or how they may hold up over the long term?