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Quantity
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The next level of comfort for your Vyper chair. The stock backrest is built right, contoured to the lumbar, and works for most buyers exactly as designed. The Adjustable Backrest is for buyers who want more, taller height range, the ability...
Reviews
4.9
197 ratings
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Great product. The only issue is that I had to watch 3 different assembly videos to assemble the chair and the videos were not totally in sync. For example, the EZ Lift chair video did not state that if you have the adjustable back rest that you should install the base plate to the seat before you installed the adjustable arm wrests, so I had to take everything a part to correct the situation.
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Dave · Yesterday
Adjust perfect for back height and angle.
Installs in just a few minutes everything included.
wanting to order another stool or chair for for my garage.
I don't mind paying for quality, and Viper is that.
Thanks Viper!
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Daniel · May 30, 2026
Got my new chair and then saw the extended back rest. It has made a huge difference in how my chair fits. I have neck and back issues so this was a great improvement.