Structured group and private sessions for all ages and skill levels, focusing on technique, fitness, and fun.
Controlled sparring opportunities for those looking to test their skills in a safe, supervised environment.
High-energy workouts using bags and conditioning stations to improve cardio and strength without contact.
Dedicated area with equipment for building power, endurance, and overall athletic performance.
Specialized coaching for kids and teens, promoting discipline, confidence, and sportsmanship in a supportive setting.
Flexible options including affordable day passes and monthly memberships for convenient access to all facilities.

Family-Oriented Boxing Excellence in Orange County – Train Hard, Feel at Home.
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Grampas Boxing Gym is a premier boxing facility in Westminster, CA, offering a welcoming, family-like environment for all skill levels. From fitness boxing to amateur/pro training, we provide top-notch coaching, a clean and fully equipped space with heavy bags, a ring, and strength conditioning. Our dedicated staff, including Coach Angel and Coach Lexie, ensures personalized support and a strong community vibe. Whether you're looking to get fit, learn boxing, or spar, we make every workout feel like home.
We enrolled our son first, then our daughter two weeks later and we’ve been extremely happy ever since. The gym has great energy, and everyone’s been welcoming. Coach Lexy, who works with our daughter, has been amazing. She’s supportive, motivating, and really knows how to connect with young athletes.
Based on a friend’s recommendation, I enrolled my son in boxing classes and have been extremely pleased with the experience. Coach Angel is excellent, providing both skillful instruction and strong leadership. The program is well-structured, and we are very happy with our decision.
Hands down the best gym and team in OC. Lexi made me feel very welcomed and is a great coach! The evenings can be packed but don’t let that stop you from going, everyone is super nice and chill. A day pass is only $10 and working with a coach is also very affordable. Very clean and well managed. Gyms like this are the golden standard, no cool guying only support and encouragement. I often prefer to train alone but working with others brought out a different side of training to me. The community in there is great, a lot of legends and future legends in the building. I encourage every boxer new or experienced to visit and work with Lexi! All love from Boston - Jimmy
If Grampas isn’t the best boxing in Orange County, it definitely is one of the best. Came down to visit home for the holidays from Seattle and needed to find a boxing gym to continue my training (10 months in), opted in for a 30 day pass for only $75. Bags, ring, double end, you name it they got it. Met the entire staff and they treat you just like family. Big shout to Angel, Lexie, Jessica, Diego and the rest of the team. Will definitely be back when in town and RIP to the original Grampa who started it all! Best, Jax
I been training at Grampas Boxing Gym for the past 3 months, and it's a great gym for everyone looking to put in work. It's hard to find gyms with a good blend of fitness boxing and amateur/pro boxing, but grampas boxing has it all. If you're looking to get fit without getting hit, this is a good gym for you. If you want to learn and put your knowledge to the test, Grampas gym offers sparring. The facility is always clean and well equipped with all the bags you need, (multiple heavy bags. double end bags, speed bags, a big ring, mirrors, a strength and conditioning station) The gym owners are also friendly and make an effort to get to know their members. The prices for the facility are great for a spacious and equipped gym. The other members and trainers are all friendly. Overall what sold me on the gym was how it made my training feel like home. Would recommend to anyone in OC looking for a family oriented gym, I live in LA and make that drive knowing its worth it. Very thankful for Jessica and the rest of the Grampas Boxing family, yall's gym helped me get through these tough times. Glad to have found Grampas gym! P.S. They have dope merch! (Pics below) -Jay L.
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