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4mm Allen Nut Hot Rod Truss Rod

4.5
  • 129 Reviews
  • Write a review
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12-1/4" overall length

Item # 2550
In stock, ready to ship!

$16.58

6 or more $14.42
12 or more $13.60
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14-1/4" overall length

Item # 2551
In stock, ready to ship!

$16.79

6 or more $14.61
12 or more $13.77
+

18" overall length

Item # 2552
Due 1+ month
Email when in stock

$17.84

6 or more $15.52
12 or more $14.63

24" overall length

Item # 2553
In stock, ready to ship!

$22.04

6 or more $19.17
12 or more $18.07
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4mm Allen Nut Hot Rod Truss Rod

About This Item

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

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)

Instrument
Resonator guitar
Acoustic guitar with 12th fret at the body
Acoustic guitar with 14th fret at the body
Electric guitar
Banjo
Bass
Size
12-1/4"
12-1/4"
14-1/4"
18"
18"
24"

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


Instructions

Product Instructions

Hot Rod Adjustable Truss Rods

Installation and adjustment instructions for Hot Rod Adjustable Truss Rod.

    • Item #
    • Weight
    • 2550
    • 0.1970 lbs. (0.09 kg)
    • 2551
    • 0.2320 lbs. (0.11 kg)
    • 2552
    • 0.2960 lbs. (0.13 kg)
    • 2553
    • 0.3850 lbs. (0.17 kg)

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4.5
  • 4.47 average rating from 129 reviews
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Displaying 8 of 13
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5.0

very nice truss rod

By

Verified Buyer


I bought this double action truss rod for my first guitar build. I was very scared of installing a truss rod in general because of the whole cutting a deep slot in the neck and sanding through idea. It just terrified me. I wanted to make sure the rod could help adjust for a bow in either direction an i had never built a guitar. I was extremely pleased as well as surprised with the quality of the rod, and the ease in which it went in. I bought the special router bit made for the install and it went perfectly. Thank you stewmac!

5.0

so far so good

By

Verified Buyer


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

5.0

Wow this thing adjust amazing!

By

Verified Buyer


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.

5.0

Nice rod

By

Verified Buyer


These rods work very good stewmac also ships fast!!

5.0

Double stability for your guitar neck

By

Verified Buyer


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.

4.0

Dimension

By

Verified Buyer


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

5.0

Hot Rods are The Best

By

Verified Buyer


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.

5.0

truss rod

By

Verified Buyer


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!

4.0

Very good double-action truss rod

By

Verified Buyer


I really like the idea of this truss rod, so I take one for test. ItÆs very easy to fit and it works very well for me û 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.

5.0

The Best!

By

Verified Buyer


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.

Displaying 8 of 13
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StewMac PDF Catalog, page 76 See 4mm Allen Nut Hot Rod Truss Rod
on page 76 of our StewMac Digital Catalog



  • Hot Rod® is a registered trademark of Stewart-MacDonald Manufacturing Company, Inc.