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It is crucial to check the vehicle and the parts on the vehicle to make sure that the brakes will fit.
Brakes are placed in a very confined space and big brake kits exist in spaces that were not previously occupied by parts. Unlike brakes, aero pieces like spoilers, and splitters can extend as far as the sanctioning league rules or good taste will allow. There is nothing that physically stops the size of the modification.
Brakes exist in the space between the wheels and the hub on a vehicle. On the inboard side, there are suspension pieces. The diameter of the brakes can't exceed the inner diameter of the wheel used, and the inside spokes of the wheels limit how wide the brake calipers can be. In this confined space StopTech produces brakes that are larger than stock brakes to provide more performance.
Space for the calipers varies by wheel design. Two wheels with the same offset, same diameter, and same width will yield two different fitments. One that does fit over the brakes, and one that does not. For that reason it is crucial to use the wheel fitment templates to check whether a wheel will fit over the brakes for your specific application.
To start, a general guideline is that StopTech® kits usually require the following:
If there is interference, different wheels or a wheel spacer will be necessary. Use of a wheel spacer is at the discretion of the vehicle owner. Typically a properly made spacer of 2-3mm will not adversely effect the vehicle. Issues that must be addressed before utilizing a wheel spacer include, but are not limited to, fender clearance, proper wheel bolt or stud length, effect on vehicle handling, and centering of the wheel. Wheel fitment and the use of wheel spacers with our big brake upgrades is the responsibility of the customer.
Note that due to commonality of hats, rotors and caliper specifications between applications, the wheel fit chart used for your vehicle may be labeled for a different vehicle, i.e., a Nissan 300ZX rear uses the same fit chart as a Nissan 350Z rear. This does not mean the kits are the same, only that the disc and caliper are positioned the same relative to the wheel mounting surface.
If you have any questions, please Contact Us online or call +1 310-933-1100