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With over three decades of martial arts mastery, Chief Instructor Trent Zappen is a force of passion, power, and precision.
Welcome to USSD Yorba Linda — where confidence is built, strength is earned, and every student discovers the power within. Whether you're stepping onto the mat for the first time or leveling up your skills, our expert instructors create a fun, focused, and empowering environment for all ages. At our studio, we don’t just teach martial arts — we help you become your best self, one belt at a time.
Located on Yorba Ranch Road, USSD Yorba Linda is led by Chief Instructor Trent Zappen, a 5th Degree Black Belt.
His dojo offers specialized programs like weapons training and women's self-defense, empowering students of all ages to build resilience, precision, and purposeful strength in a structured, welcoming environment—no matter where they start.
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With over three decades of martial arts mastery, Chief Instructor Trent Zappen is a force of passion, power, and precision.
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