• SR-21 Series racing brake pad set
• 18mm thickness
• Fits Alcon TA6/CAR89/CAR11 and AP Racing CP3558/CP9660 calipers
• Front application

SR-21 Series: Built for Full Race Calipers

This SR-21 Series racing brake pad is an ultra-high-friction compound aimed at dedicated race cars running bias controls, built specifically to the 18mm thickness spec for Alcon TA6/CAR89/CAR11 and compatible AP Racing CP3558 and CP9660 calipers. Because it's sized to these exact full-race caliper families, it's a precision fit rather than a universal pad trimmed to approximate size. Getting the thickness spec right matters for proper piston travel and pedal feel in these caliper designs. That's real, testable information, not just marketing language.

A Pad Built for a Specific Caliper Family, Not a Factory System

This pad is intended for cars already running one of these specific full-race caliper setups rather than a factory braking system, so it's not a direct swap for a stock caliper. If your car isn't already running an Alcon or compatible AP Racing caliper, this isn't the right starting point regardless of how appealing the SR-21 compound sounds. For cars that are already built around this hardware, though, it's a precision match rather than an approximation. It's the kind of detail EBC backs up with actual testing rather than just claims.

Straight From Subispeed

A precision-fit SR-21 pad for a 2016 STI already running Alcon or AP Racing full-race calipers — confirm your caliper family matches before ordering.

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