The Hawk HB667B.622 is a front pad set for the 2011-2012 Porsche 911 Targa 4S, built on Hawk's High Performance Street 5.0 (HPS 5.0) line. The manufacturer describes HPS 5.0 as a Ferro-Carbon friction compound meant to deliver stopping power and pedal feel without compromising ABS operation. The manufacturer also cites shorter stopping distances, better performance under heavy braking, and a smooth, predictable release for street driving. That makes it a practical step up for a 991-generation Targa 4S owner who wants firmer bite on spirited canyon runs without the dust and noise of a full race pad.
Fitment is the first thing to confirm. Hawk's own pages list this family by thickness and compound, and the Targa 4S application is consistent across catalogs, but the wider model lists vary, so verify against your VIN before ordering. The manufacturer states these pads are designed for iron or metal rotors and are not compatible with carbon ceramic rotors. For DIY work, owners on user forums report that the 991 caliper comes off as a whole unit held by T55 Torx bolts, that a pad spreader or C-clamp makes piston retraction easier, and that wear sensors often break during removal. Long-tail searches for "2011 2012 Porsche 911 Targa 4S front brake pads," "HPS 5.0 Ferro-Carbon pads 991," and "991.1 Targa 4S front pad replacement" should lead buyers to this exact application.
No. The manufacturer states that Hawk Performance compounds, including HPS 5.0, are not compatible with carbon ceramic rotors and are designed to work with iron or metal rotors.
The manufacturer lists an operating range of 100–750°F, with an optimal range of 100–550°F.
Owners on user forums report that wear sensors frequently break when pads are changed, and that a replacement sensor is commonly installed with the new pads. Check your sensors before you start the job.
Pad replacement on this generation is an intermediate job. Owners on user forums describe the caliper as removed whole, with two T55 Torx bolts, so you will need a T55 bit, a pad spreader or C-clamp, pliers, and a torque wrench. Lift the car at the factory jack points and support it on jack stands. Disconnect the wear sensor first, and never let the caliper hang from its brake line. Owners recommend pushing the pistons back gently and evenly, then tightening the caliper bolts to 63 ft-lbs (85 Nm), which owners cite as Porsche's specification. Apply brake lubricant or anti-squeal compound to the pad contact points to reduce noise.
