Page 679 - 2017 Racecar Engineering Circle Track Parts and Accessories Catalog

POLYMATRIX BRAKE PADS
Wilwood has many types of brake pad compounds designed specifically for racing. It is important to analyze braking requirements and select the proper pads.
Experimentation is often necessary to determine the correct compound for a particular application.

POLYMATRIX “A” COMPOUND POLYMATRIX BP-40 (“SMART PADS”) COMPOUND
Heat Range: Low to X-High, Torque: X-High Heat Range: Low to High Torque: Medium
“A” compound delivers an immediate cold response with the highest friction Improved friction compound is well suited to severe duty oval, road course
values at all temperatures. Engineered for severe duty oval track race applica- and off-road applications that require aggressive response and durability at
tions which require immediate high response at low temperatures. the highest of temperatures. Pads offer very high heat fade resistance and long
POLYMATRIX “B” COMPOUND wear rates with iron and steel rotors.
Heat Range: High, Torque: High POLYMATRIX “E” COMPOUND
With quick warm-up, high friction and fade free performance at high tem- Heat Range: Medium to High, Torque: Medium to High
peratures, “B” is the best choice for sprints on pavement or dirt tracks with A proven “Million Dollar” winner and the first choice for all types of dirt
extreme braking. racing. “E” has immediate cold response, with consistent torque and pedal
BP-10 (“SMART PADS”) COMPOUND response through the entire temperature range. “E” has smooth engagement
Heat Range: Medium to High, Torque: Light to Medium for finesse driving on slick tracks, with plenty of stopping power right from the
A medium to high temp compound, low dust characteristics and the low start.
temperature response of a street pad. Use on dirt track cars with vented iron POLYMATRIX “H” COMPOUND
rotors, club sport and track day racers. Heat Range: Low to X-High, Torque: High to X-High
POLYMATRIX BP-20 ("SMART PADS") COMPOUND Slightly softer initial response than “A” compound with the same high
Heat Range: Medium to X-High, Torque: Light to Medium temperature friction. Severe duty compound has long wear characteristics and
Provides increased friction levels with extended temperature range over works well on oval track applications. Delivers smooth, consistent engagement
BP-10. Ideal for heavy braking on dirt tracks, and hobby and sportsman asphalt at all temperatures and pedal pressures.
racing. POLYMATRIX “Q” COMPOUND
POLYMATRIX BP-30 ("SMART PADS") COMPOUND Heat Range: Low to Medium, Torque: Medium
Heat Range: Medium to X-High, Torque: Light to Medium Ceramic-enhanced compound is ideally suited for aluminum rotors. Provides
Long wearing pad in the middle temperature ranges with moderate wear in smooth engagement, long service life, quick recovery and high fade resistance.
sustained high heat conditions. Works well on hard braking dirt late models, COMPOSITION METALLIC “CM" COMPOUND
DIRT modifieds and as a proven workhorse on asphalt late models, modifieds Heat Range: High, Torque: Medium
and sportsman. Formulation is specifically for use with Super Alloy rotors. Compound offers
high friction throughout temperature range.
POLYMATRIX BRAKE PAD CHART (AXLE SETS, 4 PADS PER SET)
Caliper Pad “A” “B” “BP-10” “BP-20” “BP-30” “BP-40” “E” “H” “Q” “CM”
Type Type Compound Compound Compound Compound Compound Compound Compound Compound Compound Compound
GM/Howe D52 WIL15A-5737K WIL15B-3994K – – – WIL150-12249K WIL15E-6102K WIL15H-8232K – –
GM/Metric D154 WIL15A-6219K WIL15B-3998K WIL150-8936K WIL150-9422K – WIL150-12250K WIL15E-6103K – – –
Aero 4/6, W4A, 6617 – – WIL150-9488K – – – – – – –
W6A Radial Mount
Billet Dynapro 6712 – – – WIL150-10007K – – – – – –
6-Lug Mount
Billet Dynalite
Single 6812 WIL15A-10142K WIL15B-9819K WIL150-9764K – – – WIL15E-9820K – WIL15Q-10144K –
Dynalite (Cotter 7112 WIL15A-5734K WIL15B-3991K WIL150-8850K – – – WIL15E-6096K WIL15H-8291K WIL15Q-6824K –
Pin)
Superlite II, III 7320 WIL15A-5735K WIL15B-3992K WIL150-8856K – – – WIL15E-6100K WIL15H-8108K – –
Billet/Forged 7416 – WIL15B-6705K – – - WIL150-12244K – – – –
Narrow Superlite
Superlite 6 And
Forged S/L 7420 WIL15A-5938K WIL15B-5939K WIL150-8854K – WIL150-9864K WIL150-12245K WIL15E-6084K WIL15H-8114K WIL15Q-6829K –
GN II, GN III, ST 7520 WIL15A-5736K WIL15B-3993K – – – – – – – –
Billet Dynapro Lug 7812 WIL15A-9835K WIL15B-9836K WIL150-9136K – – – WIL15E-9837K WIL15H-10644K – –
Mount
Billet Dynapro
Narrow Mount 7816 WIL15A-7263K WIL15B-7264K WIL150-8946K WIL150-9419K WIL150-9865K WIL150-12248K WIL15E-7266K – – WIL150-9753K
PAD TYPES

D52 D154 6617 6712 6812 7112

7320 7416 7420 7520 7812 7816
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