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R33 GTS25 NA Brake parts for US owners

710 Views 4 Replies 2 Participants Last post by  Amogus
For those who are in the United States that don't know how to look for parts or is able to find brake parts for their car. This thread will be here for people to reference when finding break parts. Use this info at your own risk. I am just posting what I have observed while working on this car. Please do your own research when looking for these parts.

I've been scouring forums looking for brake parts for my '93 r33 gts25 4 door. For some reason, its very hard to find brake parts for this car because its 4 lug. All of the discussions that I see from people with the same issue are met with the response similar to "just swap the hubs to 5 lug". For those that Like 4lug, or for those that can't perform a hub swap, I will be posting all of the part numbers, US equivalent(if available), and notes on the parts if necessary. It's just weird to me that these cars have been around for this long, and people can't find proper replacements for this car.

Now there are some things that need to be brought to your attention. From the info that I could gather, (I could be wrong but this is the info that I have on hand) the NA version of the r33 had 2 versions of NA models, an rb20de(gts), and rb25de(gts25). For some stupid reason, they decided that the NA versions will be getting 4 lug hubs instead of 5. There are differences between the 2 versions when it comes to rotors. I will be only discussing parts for the rb25 model but if I find more info on the rb20 version, I will probably make another thread.

For starters, We need to know the size for the front and rear rotors. There have been people that tried installing s13 rotors for the rear of their skyline. What people never mentioned, was the year that the s13 was (because it matters). Here are the dimensions of the front and rear rotors as well as the OEM part number for research.

Front Rotor (4020617U00):
  • Diameter:280 mm
  • Brake Disc Thickness:26 mm
  • Minimum Thickness:24 mm
  • Centering Diameter:68 mm
  • Height:50.5 mm
  • Pitch Circle Diameter:114.3 mm
Rear Rotor(4320615U00):
  • Diameter:266 mm
  • Brake Disc Thickness:9 mm
  • Minimum Thickness:8 mm
  • Centering Diameter:68 mm
  • Height:??? mm
  • Pitch Circle Diameter:114.3 mm

From what I have tested, the front rotors can be swapped with the 2007 Nissan Versa 1.8L L4. The only difference is the thickness (24mm thick, 22mm Min thickness).
You can use the rear rotors from a 1988 200sx 1.8L(s13). Not the USDM version as the rotor is completely different. The overseas version is an exact fit because this rotor was used for the NA skyline as well.

Here comes the tricky part: The Break Pads!!!

The OEM number for the rear pads is: AY060NS008. You can use the rear brake pads from a 1990 Infiniti M30 3.0L V6. The Infiniti M30 shares the same rear rotors as the '93 skyline gts25.

The OEM number for the front pads is: AY040NS097. American version is unavailable right now, but they share the same pads with a '93 - '02 Nissan Laurel.

This is all of the information that I have for now and will be updating when new discoveries have been made...
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