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SignUp Now!thanks. sounds like this will be an upgrade soonReplaceable pistons and seals. All of the other components can be replaced as well. The stopping power, that would have to be asked to one of their engineers. I cannot offer technical data on that.
I can say, larger disk equals to more braking leverage. Larger disk can handle more heat, especially if drilled, slotted, or both. Likely has a better vane system for circulating air to dissipate heat. Which means, with better pads and fluid, longer hard braking and repeated hard braking before brake fade, and more time before surpassing the coefficient of friction of the brake pads. Can upgrade to titanium pots for added heat resistance/deflection, which helps prevent boiling of the fluid.
Lighter than OEM pieces, so reduced unsprung weight.
Larger wheels and tires, and especially added weight from lifts, bumpers, expeditionary style builds,tax the OEM systems heavily. Larger calipers & rotors untax the system.
For XRunners, it gives you safer repeatable later braking than without, without the worry of causing brake fade and losing control on a road course or other extra curricular style of driving.
I'm doing the rear mod. I want some hands on time with a few rear ends first though. Not sold on just the retro fit just yet. FJ and 4 runner rears are very similar if not the same in length for the rear. I need to finish my research first. Figure out whats involved with the kits and such
This kit, which is the biggest they make production for our trucks is MSRP of $3,495
If one of you ,or anyone, wants my kit at a discounted rate, I would sell it so I can get my custom 405 x 36mm w/ 8 piston kit.
Remember though. Stop tech and other brands are NOT the same. There is a considerable difference in features, materials, weight, serviceability and warranty. Look at my track record. I demand the best of the best for anything I do and put my time in and research till I am blue in the face. I make sure I am making the right investment, not a purchase.