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Home : Truss rods : Adjustable truss rods : 4mm Allen Nut Hot Rod Truss Rod

4mm Allen Nut Hot Rod Truss Rod

Read 93 Reviews   |   Write a Review

A smaller 4mm (5/32") Allen nut for most instruments. Smooth two-way action corrects upbow and backbow, giving complete control over the neck.

See details below

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4mm Allen Nut Hot Rod Truss Rod
Item# Description In stock Price Quantity
2550 12-1/4" overall length Yes
6 or more $13.64  
12 or more $12.38  

2551 14-1/4" overall length Yes
6 or more $13.91  
12 or more $12.67  

2552 18" overall length Yes
6 or more $14.84  
12 or more $13.60  

2553 24" overall length Yes
6 or more $18.96  
12 or more $17.74  

Quantity prices apply to multiples of the same item number Selected currency  


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Easy to install. The Hot Rod® fits in a straight channel. For proper operation, this truss rod must be installed so that the active rod (the rod with the adjustment nut) is below the passive rod. A wooden filler stick is not required.

Smooth 2-way action with superior strength for stubborn necks.
Our Hot Rod neck adjustment system features twin rods in threaded brass collars. The stainless steel active rod turns for smooth neck alignment, with 2-way action to correct upbow and backbow.

The Hot Rod requires an access cavity for the adjustment nut, and a straight 7/32"-wide x 7/16"-deep slot (measured from the bottom of the fretboard) for installation.

Pick the Hot Rod Truss Rod size you'll need:
(overall length includes the nut)

Resonator guitar
Acoustic guitar with 12th fret at the body
Acoustic guitar with 14th fret at the body
Electric guitar

We've designed the Router Bit for Hot Rod Truss Rods especially for routing your neck to fit our truss rods.

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 Ratings and reviews
4mm Allen Nut Hot Rod Truss Rod
4mm Allen Nut Hot Rod Truss Rod
4.5 out of 5 stars
Based on 93 ratings Write a Review
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Displaying 31 – 40 < 1  ...  3  4  5  ...  10 >
5 6-20-2012
so far so good

I bought this hotrod for the sole purpose of flipping it upside down and making it a headstock adjust on Strat and Tele style necks. so far so good

JDCguitars  Hawaii
Customer supplied image for review
5 6-19-2012
Wow this thing adjust amazing!

Take your time and make sure thing thing gets installed nice and snug and tight. Don't install this loose or it will rattle. I like to put some silicone or hot glue right before I install it so that it snugs itself in and doesn't rattle. I make sure mine fits perfectly, when you get it in just right the smallest little adjustments will change the neck big time. No more half turns or full turns to set the neck. Small quarter or less turns will make the adjustment you need. I will always use these truss rods in my builds.

Pestvic  Sparks NV Read my reviews (10)
Customer supplied image for review
5 6-14-2012
Nice rod

These rods work very good stewmac also ships fast!!

pau  dannemora
5 5-21-2012
Double stability for your guitar neck

I've used this rod in 3 scratch-built through-body necks now, and find that all three necks stay put once set-up. The only other guitar I've seen that holds relief this well is the Hagstrom, which uses a patented aluminum I-beam system.

CJ Beuhler  Saskatchewan, Canada Read my reviews (6)
Customer supplied image for review
4 5-09-2012

This product is very good but to be perfect it should be more small to make thiner neck.

strateur  France
5 4-29-2012
Hot Rods are The Best

We make custom bass and six strings guitars in our custom shop and use the Hot Rod tension rods exclusively. Quality is excellent and they are very affordable. Another great product from Stewmac.

AZ Cigar Box Guitars Custom Shop  Chandler, AZ
5 4-22-2012
truss rod

I am extremely satisfied with this purchase. While I thought it was reasonable priced,I have purchased one on internet for much cheaper, but it was no where near the quality of this still vary affordable one!

Richard Burns  Hoffman Estates Il. Read my reviews (3)
4 4-06-2012
Very good double-action truss rod

I really like the idea of this truss rod, so I take one for test. It’s very easy to fit and it works very well for me – also for back bow correction. Some possible improvements are already written in previous reviews: odd nut bright, even instead of round upper rod. I can recommend this item for standard application.

Gaca  Switzerland
5 3-20-2012
The Best!

This is the best style of the Hot Rod Truss rods. I won't use anything else and the 4mm Allen Nut style eliminates clearance issues one may have with a socket wall that is too thick to get between the space of the 1/4" nut and headstock veneer.

Ryan K  Calgary, Canada Read my reviews (7)
4 3-08-2012
2way truss rod

It's a good truss rod setup. I needed to take an inch off the the long one I ordered so it took some messing around with it to get it apart and back together.

jjason  Cincinnati, oh Read my reviews (2)
Displaying 31 – 40 < 1  ...  3  4  5  ...  10 > /\ Top of Reviews

Shown on page 72 of our latest catalog.

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