4mm Allen Nut Hot Rod Truss Rod

4mm Allen Nut Hot Rod Truss Rod, 12-1/4" overall length
12-1/4" overall length Item # 2550 In stock, ready to ship!
30% OFF!
4mm Allen Nut Hot Rod Truss Rod, 14-1/4" overall length
14-1/4" overall length Item # 2551 In stock, ready to ship!
10% OFF!
4mm Allen Nut Hot Rod Truss Rod, 18" overall length
18" overall length Item # 2552 In stock, ready to ship!
15% OFF!
4mm Allen Nut Hot Rod Truss Rod, 24" overall length
24" overall length Item # 2553
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15% OFF!
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4mm Allen Nut Hot Rod Truss Rod

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)

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.
    • 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)
Hot Rod® is a registered trademark of Stewart-MacDonald Manufacturing Company, Inc.
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Cancer and Reproductive Harm