Front Brakes

[54bobby]

guys, I want to do all new front brakes on my 87 4x4 2.5. I'm shopping rock auto and I see 2 options. 1 has hub and 1 doesn't and is listed as (first design) which am I looking for?

[Strokermjcomanche]

You need the 1st design . 2nd has the hub bearing and are later models . 203 should be in the brake pad number .

[54bobby]

I am going to get the pre loaded calipers. does it mater  which ones or will they all fit both designs?

[Strokermjcomanche]

No it matters which ones you have 87-90 are the same 91 up are 477 pads I believe

[Comanche County]

Been wondering this myself.  I know there was a unit bearing change in 2000, but when I went to buy calipers and rotors for my 89' XJ, I checked several stores, only Advance had the calipers.  The rotors were listed as 80'-88' only in every store's computer.  They fit AMC cars and Jeeps with discs only through 88'. 

 

IIRC there was a knuckle change around that time where the caliper bracket bolts up differently.

[Strokermjcomanche]

It might be to 88 I'm having amnesia lol but 87 /88 is definitely a 203 base pad number

[54bobby]

well, I have the truck saved with rock auto and I'm guessing that if they say it will fit, that it will.

[Rockfrog]

It was 1989 ... the knuckle was changed to the chryco design for 1990. There were two knuckle designs .. AMC 84-89 for XJ/MJ D30s, then 90-06 for MJ/XJ/YJ/TJ D30s.

Calipers matched the knuckles, and rotors matched the hubs ... so 84-89, 90-99.5, and 99.5-06 for the rotors and hubs.

The 2wd axle is another beast altogether should also be noted but it only varies at the hub/rotor afaik up to 92.