Anybody familiar with this setup? Tempted to try it out, but not sure how the brake bias would work out. I’m going Porsche 986 boxster calipers on front. Might be too much for stock booster?

 

Anyone?

 

I would probably skip that. Those calipers are not at all designed for the thermal load a car will put on them.

 

it depends on how much testing the seller has done and how you're going to use the car.
If you're going to track the car, I'd look for something that's designed for automotive use. While some motorcycles are as heavy as a car, most of them are not and certainly not the race versions.
While some parts you can play with lighter and less than automotive level specs on....brakes is not a place I typically take a chance on.
My thought process on parts...When (not if) the part fails how screwed am I going to be?

 

Not a fan of the slotted bracket holes. There's enough room to use individual holes to swap between 239mm and 260mm rotors.

Beyond that, I'd want to know what the piston area of the calipers is. The rear brakes don't do much in our cars. I don't think the heat capacity of the calipers is going to be the problem - but it is something that should be considered.

 

Don't drag racers use something like a motorcycle disc rotor in the rear?

Meh, solving the unsprung weight problem is kinda minor. I'd be more worried about losing the mechanical parking brake.

 

Sure, but drag cars only have to brake once and then they sit for an hour or more. Fwd drag cars are also pretty typically cut out and lightened so much in the rear that you can pick the rear off the ground by hand.

TCR Civics (which are easily the current pinnacle of fwd race cars) use stock-sized CR-V rear rotors and they last for entire seasons.

A lowered and stiffened car on slicks can make more use of the rears than a stock street car and will benefit from shifting the bias rearward, but only to a point. There’s really no benefit to running exotic rear brake setups unless you’re after unsprung weight or bling or that little bit of rearward bias shift.