I received my R1 Concepts Brake Rotors, the Monte Carlo size ones to go with my 12" caliper brackets. I have to say R1 Concepts hit this one out of the ballpark! Great Price and really good quality.

I would like to thank Farnsworth for helping with a problem with 12" caliper brackets. It seems the prior owner had the rubber bushings from the caliper guide rods fall inside the tubes on the caliper brackets. Needless to say it took about a good hour to clean them out and get them ready for use.

Here are some shots from the install.







Here are the little bastards that kept me from doing my work









The pads that came with it were Posi Quiet Ceramic Premium pads, they were almost double the size of the stock originals.

Here is how bad the stockers were worn out.

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James Shafer 2003 GP GTX St. Louis MO
Mods: 1.9 Modified Rockers, TOGs w/ SLP Cat, Brisk LSG Plugs, 180 Tstat, PRJ 10.4 Plug Wires, P/P Gen 3, Ported L67 TB, SLP Ram Air Hood/Airbox, 2.5" Catback, 3.5 Pulley, Gen 1 Spoiler, ZZP Poly mounts, RAT Dogbones, 18" TSW Mondellos

You have got to some out and let me see that thing, I bet those brakes along w/ the new rims look awesome.

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Steven Oliver
2004 GTP comp-g WS6. Gator and suede all around interior.
Advanced MECP certified installer, custom upholsterer.

I've got PosiQuiet semi-mets (and of course the stock 12" size) and I love the stopping power. The PosiQuiets have a nylon/teflon shim on the back of them that keeps them from squealing and you don't have to use the gel. They're quiet with a lot of bite.

One thing I noticed with the semi-mets is they have to warm up to get really great braking. Cold they do well, but warm the car feels like it'll nose dive with a tap.

I like those R1s. They're pretty popular with the Impala owners and I've been wanting to get some. They look great from behind those rims!

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2004 Impala LS - got some mods
NAIOA Moderator

good choice!!

I have the R1 Premiums, stock 12" for the Impala. Using their pads as well. About a year on them, still turning true. No warp, pads are holding up well, minimal dust.

Also have the F-Body upgrade from ZZP and a set of Stainless Goodrige lines.

Drive around for a bit in my 82 Malibu then get back in the SS. Hit the brakes and end up with a chest full of steering wheel.

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2004 Impala SS - I'm done modding, I swear

My NAIOA Garage Page

Great job Geddy, thanks for sharin. I might have to get me a set of those before I put my GP back on the road.

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

Even if you shoot for the moon and miss, you still land among the stars.

I can't agree more Sabre. I have only driven on them a little bit and the stopping difference is like night and day. The pad surface was almost double that of the stock brake pads GM provides. I really notice the bite when going at slow speeds to a stop. You can FEEL them grip and hold. I think the slots on the disc help to only capture more of that grip.

I am glad I made the choice to go with the R1 Concepts. I paid $200 bucks even for all 4 discs and a full set of Posi Quiet Ceramic pads. You CANT BEAT THAT!!

I can safely say stop waiting! Get em :

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James Shafer 2003 GP GTX St. Louis MO
Mods: 1.9 Modified Rockers, TOGs w/ SLP Cat, Brisk LSG Plugs, 180 Tstat, PRJ 10.4 Plug Wires, P/P Gen 3, Ported L67 TB, SLP Ram Air Hood/Airbox, 2.5" Catback, 3.5 Pulley, Gen 1 Spoiler, ZZP Poly mounts, RAT Dogbones, 18" TSW Mondellos

That is the one thing I did not get yet. When I upgrade to the Fbody brakes, I will probably get the SS brake lines. I had a set of Goodridge on my GT and they were wonderful! But for now using the factory calipers I just left the stock the brake line tubing on till I get around to getting the FBody setup.

But the meatiness of these Posi Quiets, I dont think that will be anytime soon

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James Shafer 2003 GP GTX St. Louis MO
Mods: 1.9 Modified Rockers, TOGs w/ SLP Cat, Brisk LSG Plugs, 180 Tstat, PRJ 10.4 Plug Wires, P/P Gen 3, Ported L67 TB, SLP Ram Air Hood/Airbox, 2.5" Catback, 3.5 Pulley, Gen 1 Spoiler, ZZP Poly mounts, RAT Dogbones, 18" TSW Mondellos

I would whole heartidly recommend them! And the cost won't knick your bankbook to bad either I mean $200 bucks SHIPPED with a full set of ceramic pads. That is almost unheard of. And with R1's reputation, you realy can't go wrong!

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James Shafer 2003 GP GTX St. Louis MO
Mods: 1.9 Modified Rockers, TOGs w/ SLP Cat, Brisk LSG Plugs, 180 Tstat, PRJ 10.4 Plug Wires, P/P Gen 3, Ported L67 TB, SLP Ram Air Hood/Airbox, 2.5" Catback, 3.5 Pulley, Gen 1 Spoiler, ZZP Poly mounts, RAT Dogbones, 18" TSW Mondellos

dude where did u get the pads from. and r those impala rotors or F-body rotors?

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Mods: Powder coated ported exhaust manifolds/ Powder coated 3" down pipe/ Intense PCM/ 3.4 press on pulley/Trasher Intake/ Fuel pump rewire/AL 103 plugs/ Alternator voltage boost/ 6000k HID kit/

R1 concepts have their own website. Google for it.

F-body and Impala/Montes use the same front rotors.

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2004 Impala LS - got some mods
NAIOA Moderator