PolyMatrix "H" compound is about as close to a "run it everywhere" pad material that could possibly exist. Drivers are calling them “the most drivable pads” they have ever run. "H" compound is a high friction, long wearing material that is capable of withstanding the extreme sustained high temperatures found on hard braking short tracks and road courses. It is also well suited to intermediate length and super speedway applications where positive, but controllable initial engagement at lower temperatures is preferred for trail braking and "touch" and go race conditions.

PolyMatrix "H" compound produces high friction values right from the start. Then, as heat builds, it exhibits a very moderate rise to produce the highest friction values available from materials used with iron or steel rotors. Two key characteristics of this material are the softer initial bite and the progressive increase in stopping power as pedal pressures and temperatures continue to rise. The soft initial bite reduces the nose-dive tendencies as the car begins the transition into deceleration. When the car does not nose over abruptly, the driver can be more consistent and in better control of each corner entry. "H" is then easily modulated with pedal pressure to increase or decrease the stopping power throughout the entire temperature range. The smooth engagement qualities and consistent cold to hot bite of "H" make it simple to maintain front to rear bias settings using the same pad material at both ends of the car.

PolyMatrix "H" is fully compatible with all types of cast iron and high strength steel rotors. As is the case with most racing pad compounds, "H" reaches peak performance after it's first full bedding cycle. During the first heat up and cool down cycle of the pads, two important things take place. First, the pad itself receives a final "heat curing' under real load conditions. Next, the pad and rotor surfaces are mated and a microscopic boundary layer of friction compound is transferred onto the rotor faces. The boundary layer provides an improved friction surface to react with the pads and then acts as a buffer to reduce abrasion to the rotor faces. Proper bedding and a uniform surface boundary layer will also reduce engagement chatter and assure repeatable clean releases.

For ultimate strength and security under extreme applications, PolyMatrix utilizes the world’s most revolutionary method of mechanical retention between the friction pad and the backing plate. The patented Nucap Retention System (NRS) was developed to provide the strongest, quietest, safest and most reliable method of securing the friction material to the backing plate. PolyMatrix is the only race pad that features this exclusive 100% mechanical retention method. There are no welded retainers to break free, and no heat distortion in the plate that would result from a welding or brazing process. There are no punched holes or stamped dimples to further weaken or distort the plate. The one piece solid backing plate is in itself the retention system in this innovative new component.

The entire area of the NRS plate, which is under the friction material, is covered by rows of tiny steel projections. These projections resemble small hooks. Every hook is controlled for height, curl and direction. The hooks interact as opposing forces from all possible load angles. Once molded, the backing plate and friction material become one integral unit. Shear and separation are gone. Edge lifting and vibrations between the plate and friction material are gone. By eliminating the IM holes, the backing plate is stronger and stiffer. Flex and vibration are virtually eliminated, thereby reducing noise and any possible chance of separation. The driver gets a firmer pedal feel, lap after lap, no matter how far down the pads are worn.

NRS has been tested throughout a wide range of conditions in racing, police, military and general highway use. All tests have proven NRS to be the safest, strongest and most reliable method of securing the friction pad to the backing plate. The results are the quietest running, strongest and most reliable method of friction retention ever known. And this method can now be yours in PolyMatrix.

It is because of these methods of careful component selection, strictly controlled manufacturing and the utilization of the latest technology on all fronts that Wilwood can assure consistent performance, precise fit and maximum reliability under the harshest conditions with PolyMatrix brake pads. That’s what we feel our customers deserve.

SPECS

• Temp range: 100 - 1300 deg. F
• Friction range (coefficient of friction): 0.57 - 0.65

APPLICATION

• 1997-2004 Chevrolet Corvette C5 (all models)
• 2005-2008 Chevrolet Corvette C6 (all models except Z06)
• 2005-2006 Pontiac GTO (does not fit 2004)