Our US-based team is here to help. We respond to every message within 12 hours.
[email protected]
Responds within 12 hours
Mon–Fri: 9AM – 6PM PST
Saturday: 10AM – 3PM PST
Sunday: Closed
3820 Wilshire Blvd, Suite 400
Los Angeles, CA 90010
United States
Have a question about a product, need help choosing the right equipment, or want to explore a partnership? Fill out the form and our team will get back to you within 12 hours.
FEIERDUN® products are sold through authorized retail partners. Click the "Check Price" button on any product page to be directed to the official retail listing for your region.
FEIERDUN® offers a 1095-day (3-year) warranty on select products including the QuickDial DB1. All products come with a satisfaction guarantee and our 12-hour response commitment. If any product fails to meet your expectations, contact us and we'll resolve it.
The FEIERDUN® 5-in-1 and QuickDial systems feature a 1-second adjustment mechanism. Simply turn the dials or rotate the handle — the correct weight plates lock into place instantly so you can keep your workout flowing without interruption.
Absolutely. All FEIERDUN® products are HAP certified and internationally safety-tested. The 45° dual-lock mechanism, safety nuts, and non-slip grip textures ensure secure, stable use in home gym environments for all fitness levels.
Yes — the FEIERDUN® Adjustable Dumbbell Set (20–90lbs) includes a connector rod that transforms the pair into a barbell. The set also converts into kettlebells and push-up stands, making it a complete 4-in-1 training system.
The FED Fitness app pairs with FEIERDUN® equipment to deliver guided workouts, progress tracking, and personalized training plans. It's available free on iOS and Android — download links are on our homepage.
Yes. Our 5-in-1 Adjustable Dumbbell Set starts at just 2lbs and progresses to 10lbs — perfect for beginners working on toning and technique. As your strength grows, the QuickDial DB1 scales all the way to 52.5lbs for advanced training.