Sperzel Trim-Lok 6-In-Line Guitar Machines

  • 26 Reviews
  • Write a review

Sperzel's rear thumbscrew locks the string, making these machines ideal for tremolo guitars. For 6-in-line pegheads.

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Sperzel Trim-Lok 6-In-Line Guitar Machines Satin chrome

Satin chrome

Item # 3422
In stock, ready to ship!


3 or more $55.81
Sperzel Trim-Lok 6-In-Line Guitar Machines Satin black

Satin black

Item # 3422-B
In stock, ready to ship!


3 or more $59.24
Sperzel Trim-Lok 6-In-Line Guitar Machines Satin gold

Satin gold

Item # 3422-G
In stock, ready to ship!


3 or more $68.65
Quantity Discount Prices apply when you buy multiples of the same item number.
Total: $0.00
Quantity: 20


Sperzel's rear thumbscrew locks the string, making these machines ideal for tremolo guitars. For 6-in-line pegheads.

The string posts on 6-in-line sets have graduated height (no string trees needed). Cast gear housings with sealed lubrication. Single pin mount keeps tuner from rotating, no mounting screws needed. Recommended for 1/2" - 9/16" (12.7mm - 14.29mm) thick pegheads.

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

Staggered string posts:
The Sperzel 6-in-line tuners feature 3 heights of string posts in each set. The tallest two tuners are used on the E and A strings, the medium length posts are used on the D and G strings, and the shortest two posts are for the B and E strings. This allows the E, B, G, and D strings to have a steeper angle off the nut than with traditional tuners — eliminating the need for string trees.

    • Item #
    • Weight
    • 3422
    • 0.547 lbs. (0.25 kg)
    • 3422-B
    • 0.483 lbs. (0.22 kg)
    • 3422-G
    • 0.488 lbs. (0.22 kg)

Ratings & Reviews

Sperzel Trim-Lok 6-In-Line Guitar Machines

  • Based on 26 Reviews
Displaying 1 of 3 1 2 3
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Don't love the Sperzels

By M. OBrien from New York
(Customer's Reviews) Wednesday, January 29, 2014

I bought Sperzels for my Strat in 1985 when I read Keith Richards was using them. Were always fine. I don't really like these Sperzels. The action varies among the tuners and is not smooth, especially when tuning down. These tuners also made me realize that I don't like locking tuners in general. Now that I have an electric string winder, I prefer the more traditional tuners. I really like the Grover Rotomatics. They also have a finer tuning ratio-- 18:1; rather than the 16:1 of the Sperzels.

Great improvement

By Ozzios from Israel
(Customer's Reviews) Sunday, December 15, 2013

i have replaced the tuners in my 2001 MIM strat with satin chrome and boy what a difference. Rarely goes out of tune, easy to adjust, easy to replace strings, no need for string trees and in my opinion looks beautiful. Recommended! I ordered it through regular mail and it arrived in just two and a half weeks great!

Son de 10sss 

By zudaka from Argentina
(Customer's Reviews) Wednesday, October 16, 2013

Como Riquelme 10. ++++++++++++++++++++++++++++++++++++++++


By james147 from New York
(Customer's Reviews) Monday, May 13, 2013

very cool tuners. tuning action is a bit rough but they certainly hold the tune very well. no more high E slippage

Sperzel 6 in-line

By CWaggs from Illinois
(Customer's Reviews) Monday, September 24, 2012

One of the six has a a gear mesh that's a bit rough, which is surprising, but these things are excellent. The graduated height is fantastic. Never liked string trees, even the roller ones.

good   tuner

By niponz from Thailand
(Customer's Reviews) Wednesday, June 06, 2012

I buy this tuner from stewmac more 10 pcs , customer like it

Best. Tuners. Ever.

By MUYFUE from San Antonio TX
(Customer's Reviews) Wednesday, May 09, 2012

These are my favorite tuners. The cardboard template is a little dinky, but it's accurate. Stewmac makes a jig for drilling a hole to accept the mouting pin. What I do is just eyball it with the cardboard template. Comes out good for me. Good weight, very sturdy, GREAT matte finish, the locking pins have never slipped on me in the 15+ years I've had them on my V. Best. Tuners. Ever.

Nice tuners but lousy template

By Suhr3825 from CA
(Customer's Reviews) Wednesday, April 04, 2012

Very nice quality tuners that I have on many guitars. The supplied template is not very good though. You must be very careful drilling the pin hole. My first attempt did not go as planned and I used the template.


(Customer's Reviews) Wednesday, March 28, 2012

ok.... gostei

Sperzel tuners.

By resoamp from Beechworth Australia
(Customer's Reviews) Thursday, March 08, 2012

I like the satin finish. I install them on all the guitars that I build.No screw mounting, so you can replace other branded tuners without creating visible screw holes on your headstock, if you choose to reverse the upgrade. Don't throw away the packaging before you remove the drilling template. Yes, you have to drill a locating hole, but it will be covered by any other brand of tuner. Oh, the string up quick, they hold tune and they look good. Can't beat the quality or value for price.

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