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At Bunker we believe that the neck is the backbone of a really great guitar or bass. Because of this, we will not build our instruments with anything less than a Tension Free Neck™.
These necks use a 3/8" cold rolled steel bar to support the strings at the headstock, thus removing all string tension stress from the neck, leaving the neck free to resonate as it should.
This technological advantage eliminates dead spots, and provides much quicker response to the notes you play.

All Tension Free Necks carry a LIFETIME WARRANTY!

With a conventional guitar neck truss rod, the neck is actually compressed between points A and C. This, along with the string tension, kills the necks resonance at point B.

On a Tension Free Neck™, which is separated at B from the headstock, all of the stress is on the cold-rolled steel rod between A and C. The pin through the neck at point F secures the neck and fingerboard, leaving the stress on the steel rod at point C.

On the back of each neck, at D (on the heal), there is an access hole where you can adjust the neck to forward or back bow.

These necks can be retrofit to any guitar or bass.

It's best to call or email for pricing, but the average Tension Free Neck for a guitar is $250.00, and for a 4 string bass $285.00. We also do retrofit at the factory which averages $300.00 per neck.

All Retrofit Tension Free™ Necks carry a LIFETIME WARRANTY!

If you're looking for something really great to improve your current Guitar or Bass, THIS IS IT!

Dave Bunker tells how Tension Free™ began

When I was building and designing my first guitar in the mid 1950's, I worked for Boeing Airplane Co. as a production controller.
This job put me close to some of the finest engineers in the world. At one of our holiday parties I brought up some of the problems I had found with the conventional type truss rod with a group of structural engineers. These fine people decided help with the long-standing problems inherent to the old truss rod design.
In their off-hours these engineers, working on the Bomark Missile Project at the time, helped me design what would become the "Tension Free" Neck.

And that is how the Tension Free Neck™ was born.



Need more information?
Call for factory direct pricing  360-652-9148  



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