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Brembo Piston Sizes - Suspension/Brakes/Wheels/Hubs/Steering/Geo - The Lotus Forums Jump to content
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DanR

Brembo Piston Sizes

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Would anyone know what the diameters of the pistons in the OEM Brembos are? Thanks.

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Front or back?

Fronts: I don't know the diameters any more, but the total surface of the 2 pistons on 1 side is exactly the same as the 1 in the toyota's caliper. And the center point of the pads is also on the same diameter. So changing only the fronts does not influence the balance (front-rear) while braking.

Back: The diameter of the pistons in the Brembo's is considerably smaller than the original ones (bendix?). They are placed at a larger diameter: so that the braking torque ( braking force x radius) is the same. 

The braking torque of the Toyota+Bendix's and the Brembo's is the same, but the Brembo's have a much higher heat dissipation possibility, and have a larger surface (better cooling), so can be used more intensively. (This is basic sceince, despite what people tell, most of the time without thinking...)

 

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Thanks. The front ones are what I'm trying to find out.

 

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Does 36mm and 40mm ring a bell?

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