I was just looking online for brake pads for my 10" GS. Some sights ask for either J55 (heavy duty?)or J56 brake code option for the GS. How do I know what I got? I thought all GS had J55?

 

It is tricky a lot of people went to 1 piece pads for that car. What are you using the car for? There are many people that make pads for this caliper. GM use a multi puck, where as some after market MFG have gone to a 1 piece pad.

I prefer the Carbotech 1 piece pads, depending on your needs Carbotech can provide various compounds. I'm guessing you just need a street pad? The Carbotech 1521 in 1 piece design will do the job for your if not tracking the car. Have a look below. These pads are in stock and ready to go. we offer 5%forum discount on this item take a look below.

Carbotech™ Bobcat 1521™ The Carbotech Bobcat 1521™ is our high performance street compound that is our most successful compound. The Bobcat compound is known for its awesome release and modulation, along with unmatched rotor friendliness. Like our AX™ & XP™ line of compounds, Bobcat 1521™ is a Ceramic based friction material offering minimal rotor damage and non-corrosive dust. Bobcat 1521™ offers outstanding performance, even when cold, low dusting and low noise with an excellent initial bite. This compound’s virtually perfect linear torque production provides incredible braking force without ABS intervention. Bobcat 1521™ operating range starts out at ambient and goes up to 900°F. Bobcat 1521™ is suitable for ALL street cars, perfect for your tow vehicle, police cruiser. The Bobcat 1521™ compound has been found to last two-three times longer than OE pads you can purchase at a dealership or national retailer. That’s one of the beauties of Carbotech Ceramic brake compounds. Bobcat 1521™ is NOT recommended for any track use.

We have finished our redesign of our C6 Z06 One Piece pad for the front and rear stock calipers (PBR Calipers). We were the first to release the padlets almost four years ago, and then we were the first to release the One Piece over a year ago. That design that we worked with GM on wasn't perfect. That's the same design you see other companies using now.

We set out to redesign the new One Piece all on our own. We wanted to make sure it was perfect and even more user friendly. This new design will drop right into the caliper and you don't have to take out the caliper pins or spring clips. The spring clips are critical in keeping the brake pad square to the rotor surface and ensuring that the pads slide smoothly along the pins. The spring clips also assist in reducing the noise inside the caliper.

This new one piece will make changing pads a lot faster and easier. The newly designed Carbotech One Piece will give longer pad life and a little more bite as well. We are molding the new One Piece pad just like we do with all the C6, C5, and C4 brake pads.

We are also using industry leading NRS technology. If you're not familiar with NRS technology it gives molded pads up to 8 times stronger sheer strength vs. conventional molded brake pads and riveted pads. NRS technology also helps in reducing noise and vibration of the brake pad inside the caliper as well as aiding in longer wearing pads. We use NRS technology on all C6 & C5 front and rear brake pads.

Here is a link to explain further what NRS technology is exactly: http://www.nrsbrakes.com

The new One Piece is available in ALL compounds and are in stock as of right now.

 

Street use only,going with semi-metallic padlettes. I'm asking about the brake option code here btw.

 

J55 is the Z51 brake code.

J56 is the Z06/GS brake code.

 

Never knew that. When I ordered my Duralast Gold ceramic pad lets from AutoZone there was no mention of a "brake code" ???
They're on and working great BTW
NSF

 

If you put in the info for your specific car, the code was not mentioned
I got my Ceramic pads from O'Reilly's ... no more brake dust

 

Thanks Rick.