About Us

Diamond Bar Choppers has been involved with the motorcycle industry for 15 years. Diamond Bar Choppers started out as Bob's Harley Repair until October 2004, when we relocated to Diamond Bar and changed our name to Diamond Bar Choppers. We focus on performance work. If you want a fast and reliable motorcycle, we are the ones you want to see. We are a full service motorcycle shop specializing in Harley Davidsons, Indians, and many other brands. Whether you need an oil change, carburetor adjustment, or a fully customized bike built from the ground up, we will get it done. We get a lot of work referred to us from other bike shops in the area that send in problem bikes for diagnosis and repair. Bob has been a master mechanic since 1982.

Learn More About Us

Meet The Owner

bob laguardia
Bob Laguardia

Bob Laguardia

Our Work

Check out some of our highlights.

  • Our Services

    Repair & Servicing

    We work on American motorycles. Harleys, Indians, you name it. Please call us to see if we can service your bike.

    Tune Ups

    Our vast range of tune ups include: Brake Changes, fork seal replacements, oil changes, exhaust modifications, and suspension setup.

    Fuel Injection Tuning

    We do a complete check on each fuel injector. All injectors are cleaned with Our UltraSonic machine and tuned with our Superflow Dyno.

    Machine Work

    We have our own state of the art machine shop in house! There isn't anything we can't do. We use high spec Rottler machine tools to get the job done right.

    Custom Fab Work & Painting

    Custom lighting, custom builds, extended swing arms, custom paint, fairing repair, etc.

    Motor Rebuilds/Adjustments

    Custom engine work & valve adjustment/replacement.

    Get Connected With Us

    Get In Touch

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    Monday - Friday : 9AM - 4PM
    Tuesday - Friday : 8AM - 5:30PM
    Saturday : 9AM - 3PM Sunday: Closed