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Stoptech anti knock-back spring for 26–36 mm pistons is sold individually and provides approximately 4 lb of force to resist caliper piston roll-back. It’s intended to keep pad and piston position more stable under braking, helping maintain consistent pedal feel and caliper performance. Use it where piston knock-back has been an issue during heavy braking or pad retraction.
Stoptech Anti Knock-Back Spring for 26-36mm Pistons (Sold Individually) - 4lbs of Force
