What holds the pads in? I bought a new BBK set up second hand. They are black calipers with 4 pistons. The pads push in from the back towards the hub....but what holds them on in the rear? What stops them from backing out? I was looking at the wilwood site and some of there set ups show a retaining bolt that goes form one side of the caliper to the other to hold the pads in....my set up does not have this bolt. I am pretty sure the previous owner of this set up bought it from fastbrakes. Anyone know the answer?

pm'd.

okay, I looked up the part number to try to find a picture of what I have and here they are:
http://www.jegs.com/i/Wilwood/950/120-6811/10002/-1

This shows a cotter pin in the place of the bar and bolts. I do have these cotter pins. Is this perminate? I thought those things were just used to hold some tags and rubber bands. Anyone know?

Yeah, that little pin is it. On superlites it's a more substantial bar that bolts at both ends to prevent caliper flex.

Dynalites are usually thought of as better for small cars (Miatas, etc). For a Maxima, they might be a bit small, IMO. I had superlites on mine and definitely would not have wanted to go smaller, personally. You may have some flex problems with those little guys on a maxima (or maybe not).

I guess if it comes down to it I can always change calipers if these don't seem to be doing the job. Are the mounting points the same/ can I use the same dog bone mounts between the two calipers?

No, mounting points are different for both calipers.
The cotter pin is all that holds the pads in place vertically. the calipers slide into the slots and the rotational force form the pads when braking is taken by the caliper itself.

I ran Dynalites on my Maxima for about 3-4 years. they're fine for daily driving and track use, but you will go through pads quickly.. Superlites are a better option for our car, but wheel clearance becomes an issue as the calipers are huge. Pads are also more expensive on the Superlites, but there's also 3x the material there so the cost is offset by much longer pad life.

That's for that. I have done some more research since I posted this and I have talked to fastbrakes and revolution brakes (they bought percision brakes). My kit was originally purchased as a percision BBK. I am probably going to buy some superlites with mounting brackets and sell theses dynalites, I should be able to get around 200 for the calipers and pads since they have not been used. If anyone reading this is interested in the calipers and pads please PM me because I will probably just list them on ebay once I get the superlites.

What kind of pads, what piston diameter?

I am not infront of the stuff right now, but the pads a Wilwood's not sure which model but I can get that later assuming its on the box. Also, where would I find the pistion diameter without pulling the calipers back off the car? When I talked to the guy on the phone I do not remember what size he said the piston diameter but he said I have the right size for this size of car...what ever that is worth. Here is a link to the listing of the kit I have, it is p/n 14-NI-0046, it lists for $1833.
http://www.revolutionbrake.com/files...kits-06-07.pdf

:wow that's some overpriced stuff!:

They're probably 1.75" pistons then, since that's what everyone goes with. I need smaller pistons for mine since they'd be a rear application.

to add on to matt's comments about wheel clearance, just an FYI - with the superlites and matt's rotors I had plenty of clearance using:
G35 sedan 17x7.5's (et33)
G35 coupe 18x8's (et30)
5zigens 17x8 (et30)

Glad to know they clear the sedan 7.7" wheels.

I have to run a 10mm spacer to clear my CP-035s, but then again they're a +38 offset or something like that. (Custom offset for Mazda RX8 Koni Challenge car)

Anyone making brackets to bolt Superlites to 4th gen Maximas?

Would love to find an option that lets me use the endless cheap pad options along with some nice fat rotors.

Call up Fastbrakes. they used to sell several kits to fit superlites on a Max. anything from 89 to 2006 use the same brackets other than the 3-4 gen has a 12mm bolt hole. 2000+ use a 14mm bolt so you'd have to drill your spindles out to 14mm. but otherwise they're the same.

ok, so i just got the calipers that cardana is selling, what rotors will i need to make this work?

I delt with Revolution brakes. They can probably help you and so can Fastbrakes. The kit came with a 325mm rotor. I linked the kit I bought in the FS add.

It all depends on what you want. you can fit anything from 11" to 13" rotors with those calipers.

if he has the same brackets that I sold to the last guy then they are made for a 325mm rotor.

he said he just opened the package as you sent it to him and never ran them. ill check fastbreaks

okay, I was just letting you know what the brackets are made for. I had them bolted to my car but I never used them either. The kit was purchased though percison brakes, which was bought by revolution brakes, so if you want to deal with someone that knows what kit you are talking about you may want to try Revolution brakes, but if you are not concerned with that I am sure either company can help you. If you want to run a different sized rotor, I think they charge between $100-$150 for a set of mounting brackets.

This may help you a little bit, this is what those came from.
kit number 14-NI-0046
http://www.revolutionbrake.com/files...kits-06-07.pdf

i talked to adam/andrew at fast breaks this morning, he said that he reccomends that i go with a bigger caliper, i asked him if he would be willing to accept these in trade if the condition is good toward a larger caliper. so ill just have to wait for them to get here.

Not to get off topic but hiw do you know which wilwood calipers you have? I recently purchased a 4th gen eith a wileood bbk on the front but no idea what setup it is and i need ti replace the pads and rotors shortly

just do google images. You probably either have dynalites or superlites

Googled both...neither image looks like my caliper

post a picture of yours

They are in their own thread just below this one...