Sperzel Trim-Lok 3+3 Guitar Machines

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Sperzel Trim-Lok 3+3 Guitar Machines Satin chrome

Satin chrome

Item # 3421
In stock, ready to ship!


3 or more $55.81
Sperzel Trim-Lok 3+3 Guitar Machines Satin black

Satin black

Item # 3421-B
In stock, ready to ship!


3 or more $59.24
Sperzel Trim-Lok 3+3 Guitar Machines Satin gold

Satin gold

Item # 3421-G
In stock, ready to ship!


3 or more $69.05
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Sperzel Trim-Lok 3+3 Guitar Machines

About This Item

Sperzel's rear thumbscrew locks the string, making these machines ideal for tremolo guitars. For 3-left/3-right pegheads.

Cast gear housings with sealed lubrication. Single pin mount keeps tuner from rotating, no mounting screws needed. Recommended for 9/16" - 11/16" (14.29mm - 17.46mm) thick pegheads.

• 12:1 ratio
• 10mm (13/32") diameter pegholes required
• Removable metal knobs
• Threaded peghead bushings included
• Sets of 6

    • Item #
    • Weight
    • 3421
    • 0.556 lbs. (0.25 kg)
    • 3421-B
    • 0.485 lbs. (0.22 kg)
    • 3421-G
    • 0.484 lbs. (0.22 kg)
    • M3421
    • 0.000 lbs. (0 kg)
    • M3421
    • 0.000 lbs. (0 kg)

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  • 4.88 average rating from 16 reviews
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(Customer's Reviews)

Very good quality, nice looking, great job, easy to fix it (not only for Gibson LP). I should prefer a better ratio (at least 16:1) but i thing this is a minor issue. Hope it stays in tune for years (I'll wait some years to give the fifth star:-)) . Stewmac is very reliable and professional in shipping all over the world. Nice job guys!


Almost great, but...

(Customer's Reviews)

I love these tuners with 2 small exceptions:

1) Sometimes large string gauges are hard to get through the hole.
2) This is more important. There is a little bit of play in the worm gear mechanism. The quality is exceptionally good except for this worm gear play. With strings to tension, this is not very noticable, but it doesn't change the fact that it exists.


Love my Sperzels

(Customer's Reviews)

I have Sperzels on all of my guitars. They are the best replacements for tuners on guitars you have trouble getting to stay in tune due to various issues. I've been putting them on all my guitars for almost 20 years, the most recent was my new Gibson SG. I would suggest also purchasing the jig they sell to drill the hole for installing them. It makes installing the Sperzel heads fast and perfect every time. I also like the idea of the alignment pin instead of screws so your not making multiple holes in your head stock and if you decide to put the original tuners back on your guitar there are no visible marks left!

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StewMac PDF Catalog, page 59 See Sperzel Trim-Lok 3+3 Guitar Machines
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