U-channel Truss Rod

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Item # 1177
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10 or more $11.34


Item # 1177-E
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Item # 1177-B
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U-channel Truss Rod

About This Item

Strong aluminum one-way truss rod, similar to the design used by Martin for many years.

The 3/8"-deep aluminum U-channel has an internal 3/16" steel rod, and a 5mm allen adjusting nut with washer.

Item  Width Length x Depth 
#1177 Acoustic  12mm  14-1/4" x 3/8"
(361.95 x 9.5mm)

Designed as a soundhole-accessible truss rod, and is
the same as installed in Martin guitars made after
#1177-E Electric  12mm  17-5/16" x 3/8"
(439.74 x 9.5mm)

For peghead or heel adjustment. This style of rod is
found in many production guitars, and is also preferred
by many custom builders because of its simple
design and strength.
#1177-B Bass  11mm  22-13/16" x 3/8"
(579.44 x 9.5mm)

For control of beefy bass necks. Can be installed for
peghead or heel adjustment.


Product Instructions

Truss Rod Installation

Single-action adjustable truss rod for Martin installation instructions.

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  • 4.68 average rating from 25 reviews
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Luthier's must

(Customer's Reviews)

Works perfect and easy to install!


HEY... hows come these changed?

(Customer's Reviews)

These have always been great truss rods and I use them often... especially when speed is of the essence.
Unfortunately, the latest batch are slightly over sized (just a little wider aluminum channel material.
Now this isn't exactly a big deal but I already made the truss rod slots for three necks based on one of the older styles I had in the shop.
I'm going to run one through the thickness sander and see if I can slim it down a little. If it doesn't work I'm only out 12 bucks. Keep in mind if you bought a router bit for the old dimension rod it isn't going to work.
Of course, I should have known better than to route for the truss rod before I had the actual rod I was going to use. hahaha


Easy to install!

(Customer's Reviews)

Great quality and easy to install! I have been using these for several years now and really like them!

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StewMac PDF Catalog, page 74 See U-channel Truss Rod
on page 74 of our StewMac Catalog PDF

12MB File

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