Zero Mod 4003 Ric Fatboy Thumbrest



3/8" Thick Thumbrest for RickenBacker 4003


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Frankie - Bass Tech

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If you are a fingerstyle player with a Rickenbacker 4003, you know there is no really good place to"hang your thumb" - You see many Rics with a wear spot at the corner of the pickguard, where players try to"dig in", and many Rics with the chrome cover removed from the bridge pickup to allow finger style access.I designed this for my own 4003 as I wanted to make it more comfortable to play and keep the "cover on" as the classic look that is a big part of this bass for many Ric fans.

This thumb rest is made out of 3/8" thick high quality dead clear polycarbonate,and precision CNC made in a machine shop here in the USA.The position and design mean NO NEW HOLES in your bass! Includes two Fender-style pick guard screws which are somewhat longer than the stock Ric screws,so you do not even change the screw holes by adding this on.

Question: Where Can I Buy a Zero Mod 4003 Ric Fatboy Thumbrest?

Answer: You can buy this from Best Bass Gear by Calling 877-839-3531 or Emailing us at or chatting with our Bass Techs


Rate and Review this item
Verified Buyer
A great thumb rest
By Bronze
Finally a comfortable place to rest your thumb, and no modifications required to install the thumb rest. My only criticism would be that these thumb rests are quite pricey but i see that they would last, are quality made, and look good. Thanks Zero Mod :)
Verified Buyer
Pricey, but works great.
The Zero Mod thumb rest perfectly matches the contour of the Ric 4003 pick guard. It comes with replacement screws that are slightly longer than the ones in the pick guard, so installation is simple. Because the Ric has a chrome cover over a pickup, I had a problem finding a spot to plant my thumb. The Zero Mod thumb rest provided me with the perfect spot. Problem solved!