Q: How much weight does the Stage 4 rear kit save over stock?
The rear assembly is about 9.5 percent lighter than the factory setup, roughly 2.7 pounds saved per corner once hardware is counted. That comes even though you move from the small 13-inch stock rear rotor up to a giant 15-inch carbon ceramic floating rotor. Less unsprung mass sharpens how the chassis reacts, and the bigger effective radius multiplies braking torque and steadies the car under heavy deceleration.
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For the do it yourselfer or trained mechanic, our in-depth installation guides provide step by step detailed instructions on fitting your Tesla with Unplugged Performance Parts.
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