Brake caliper Girling or OEM Porsche

Braking feel is amazing and they are about 5 lbs lighter each side factoring in the bracket and hardware. They also are fixed calipers vs floating, which provide better braking performance and feel.

I've been through many front brake setups on my car and personally think my current setup is the best balanced. I'm running R32 rotors with 996 turbo calipers up front with phaeton 310mm rotors in the rear. The rear made a nice difference in how the car feels when you are hard on the brakes.

Porsche Boxter calipers (non S). You retain OEM rotors you just need to source carriers (I know someone makes them just can't remember) and lines. Hands down best bang for buck and awesome performance. You save a bunch of weight and move to a fixed 4 piston caliper on each side.

Mounted the 996tt calipers this past weekend. I can say they offer more clearance than the 17z's. Fat fives can be used with no spacer. It's a tight fit but it works. Brake pedal is nice a firm. Much firmer than the 17z calipers.

The brackets I ordered from usrt bolt up to the boxster red rears.... As to whether rear boxster calipers work or not I've done and uses the calculator several times and it is a 15% increase in brake power..

AG pads so I assumed AG calipers. Told to order Girling.

It takes a larger master cylinder to push more fluid to four pistons. The surface area of all 4 pistons pushing on the disc is slightly larger than OE. A larger (thicker) rotor is being used and I'm not sure how to calculate that into the equation or if that's even important. Regardless if you have the oe mater cylinder using Porsche 4 pot calipers you will have to get a larger master cylinder.

For those of you who either have Girling 60 calipers or are thinking about getting them, this post should save you a crap-ton of time. The research here comes from a months-long ordeal which I’ll lay out for you now … Several years ago, I found a pair of Girling 60 calipers off an Audi 5000 at a salvage yard. I was STOKED to put them on my Corrado project, especially since they were a steal at $42 for BOTH. I had them beautifully shot-blasted and powder coated, which of course required that the pistons and seals be removed. As you’re probably all familiar with, other priorities in life took the place of my Corrado project, and the calipers and pistons sat for years. I recently moved from Los Angeles to Austin, TX, and the pistons are nowhere to be found. I had no idea finding caliper pistons would be such an ordeal. I did some research and found the part # s for a few suppliers, and I’m listing them here for your convenience: Centric 143.33014 This is the rebuild kit with new seals and new dust boots for the pistons. Each one will cover one caliper, so you’ll need to buy one for each. The best place to find these is on eBay, where you can get one for around $10. Don't buy the OEM one from germanautoparts unless you enjoy spending $80 for four rubber rings. Centric 117.33025 This is the disc brake hardware kit with new boots for the slide pins. Also available on eBay in the $10 range. Centric 146.40014 or Frenkit P405301 This is the 40mm piston, around $13. Centric 146.45002 or Frenkit P455301 This is the 45mm piston, around $14. Now, from what I can tell—and at least currently—the pistons are nearly impossible to find by themselves. If you look up the part numbers, you’ll find a handful of online retailers that claim to have them 'in stock', but when you put them in your cart, you’ll get a notice that, oops, they’re not actually in stock. OR, you’ll place the order, everything will process wonderfully, and you’ll enjoy euphoria like you just found the Holy Grail of the Last Supper, only to get a phone call the next day from a sales rep to ‘talk about your order,’ a phone call which will almost certainly end with you getting a refund, because you sure as hell aren’t getting the pistons. I even called Centric directly—but they don’t sell to directly to consumers, only to resellers. Centric gave me the name of their biggest client, XL Parts, which is in Texas. I called XL Parts and they don’t have the pistons in stock either. I asked if they could order the pistons from Centric on my behalf … which they COULD … but it would require me physically walking into a store, filling out a form for a special order, and paying for the pistons (and shipping) in advance. For some reason, they don’t take credit cards over the phone. Since I live 3 hours away from the nearest XL Parts location, this wasn’t exactly convenient. So my next step was the local junkyards … where I came up empty-handed. I even tried a send-us-your-part-request-and-we’ll-get-a-network-of-junkyards-to-find-it-for-you service. Four replies, all telling me they had what I needed … only to have them recant once I spoke to them and explained what I was looking for. In the end, I was saved by luck. A Vortexer had a pair of Gilring 60 calipers for sale, but they had a missing carrier and a torn dust boot, so he was willing to sell for a fraction of a full Girling 60 setup. But without something like that, I fear the only places you can get replacement pistons is by getting lucky in a junkyard, or by buying a whole new set of calipers. Or, you can always fly to Houston or Dallas and visit an XL Parts location. Hope this helps some of you. EDIT: For those of you who are being asked "What car is this for?", know that the Girling 60 calipers were used on the following: 1986-1988 Audi 5000 1992-1994 Audi S4 1995-1997 Audi S6 1990-1994 Audi V8 Quattro

On my '93 I think I've deduced it's the crappy Girling calipers' slide guide pins being worn and allowing for some play in the calipers or it's just a crap design.

G60's didnt clear the 15's i bought. Went with smaller girling 54's with 11" discs instead cause I liked the wheels to much. Ive heard the g60's are heavy pos anyways.