PowerStop® 16-961 - Z16 Evolution Ceramic Rear Brake Pads

Subaru WRX STI / WRX STI Limited 2011-2012, Z16 Evolution Ceramic Rear Brake Pads (16-961) by PowerStop®. Contains one axle set of Power Stop Z16 Evolution ceramic rear brake pads and rubber/steel shims. Power Stop’s Evolution carbon-ceramic pad formula uses OE positive mold technology to ensure a uniform friction density throughout the pad. This helps control noise and premature wear.

Features:

• Thermal Scorched for fast break-in
• Positive mold technology
• Low dust formulation
• Shims made with dual rubber layers over constrained steel to eliminate noise
• Asbestos-free
• 3 years / 36,000 mile warranty when Power Stop rotors and pads are used together

The true ceramic formula also generates far less ugly brake dust on your wheels, and wears less cast iron off your rotors. Every set of pads is supplied with Power Stop’s engineered dual-rubber-backed shims, which provide 6 times the noise reduction of the OEM plain steel shims. With 20% more stopping power, these are the pads to choose for everyday use. They’re manufactured to OEM standards, with all the proper slots and chamfers for a perfect fit and long life.

Here’s another Power Stop exclusive: Thermal Scorching. When brake pads are properly broken in, there’s a band of pad material several millimeters thick that’s been baked free of organic binders. That band progresses through the pad as it wears, keeping the gummy binders from transferring to the rotor surface and reducing brake effectiveness. Power Stop Z16 pads are treated with their Thermal Scorching process to establish that band before the pads ever leave the factory. That means a fast, consistent bedding-in.

Power Stop also uses the best technology for anti-squeal shims: constrained steel. A sandwich of two layers of steel with a viscoelastic layer between them prevents acoustic coupling between the pad and caliper piston, eliminating brake squeal. Other manufacturers attempt to use a single layer of steel or a layer of Teflon to achieve this. Power Stop’s solution, while pricier, is far more effective.