Keiser A420 Performance Testing support

Welcome to the Keiser Support Portal area for A420 Performance Testing. Here you will find software downloads and updates, announcements, manuals, guides, and more.



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Current: 4:35 pm Pacific Time

Top Resources

A420 Software Download, Notes and Version History

Download the latest A420 Performance Testing Software. Review release notes. Download repair utilities and access instructions.

A420 fix right utility program

Use this utility if instructed to do so by technical support. The purpose of this program is to recover data lost on the right side of certain ten rep tests due to a bug in software in the processor module on the exercise machine prior to Version 3.26. This bug only affects ten rep tests that were done sequentially, resulting in some or all of the right side reps data being lost.

A420 upgrade to Windows 10 instructions

If you are upgrading an older version of Windows to Windows 10, follow these instructions.

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Live Equipment Demo

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Request a visit from a Keiser Mobile Showroom and your Keiser Sales Rep can have you and your team try out as many as seven Keiser machines, including Strength, Functional and Cardio. Currently available only in the US and Canada for Commercial Inquiries.

Strength Training

AIR Series Resistance Machines

Introduce precision to your strength training. Featuring Keiser Air Pneumatic Resistance Technology, our resistance machines deliver smooth, optimal resistance throughout the range of motion at any speed, enabling everyone from new gym members to pro athletes to train with greater safety, effectiveness and efficiency.

Strength Training

Keiser Racks

Featuring air pneumatic resistance strength columns that can be attached to a bar, Keiser Racks deliver a smooth resistance that can be used alone or in conjunction with free weights, allowing for a wide array of strength exercises.

Strength Training

Stretch Corner

With a footprint of only 24 square feet (2.2 meters), the Keiser Stretch Corner is capable of accommodating a wide array of stretches while occupying minimal floor space, allowing you to regain square footage inside your facility.

Cardio Training

M Series Cardio

Featuring magnetic-resistance technology, our groundbreaking M Series Indoor Bikes, M5i Strider Ellipticals and M3i Total Body Trainers feature Bluetooth® technology and continue to lead innovation among the cardio equipment industry.

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Need immediate help?

+1 559 256 8000

Speak to a support specialist

Live chat

Chat with a representative

Order status

For orders placed on Keiser.com

Support hours: Monday - Friday, 9am - 5pm Pacific Time
Current: 4:35 pm Pacific Time