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Selected Vehicle: 1972 AMC AMX w/ front disc (choose another car)
Home > 1972 AMC AMX w/ front disc > Racing Brake Pads
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The Porterfield R-4 brake pad was our first and is our original Carbon Kevlar brake pad. Being able to maintain an average of a .50 friction level within a very wide temperature range gives the R-4 pad astounding versatility and makes it very suitable for a wide array of various track conditions.
Front -
Status: Available
$208.00
Raybestos ST-41 Maintains high mu level at extremely high temperature without sacrificing good wear - both pad and rotor.
Needs some heat to reach its potential. Very rotor friendly.
Front -
Status: Available
$249.00
Raybestos ST-43 This full race compound has proven to be one of the finest all around race compounds ever.
Suitable for use in all conditions, cold or hot. Quick warmup, no rotor wear, and excellent pad life.

Use: Formula cars up to GT
Front -
Status: Available
$249.00
Raybestos ST-42 Lower friction level than ST-41 and ST-43.
Extremely stable average and in stop output over a wide temperature range.
Has been very successful when used on the rear with 41 on the front.
Best high temperature wear of all their materials.
Front -
Status: Available
$249.00
Raybestos ST-38 offers slightly lower friction than ST-42.
Wear not as good as ST-41.
Good performance over broad temperature range with minimal rotor wear.
Front -
Status: Available
$249.00
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