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December 2021 by AOG
Really good machine shop
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November 2021 by Braswell carb's
Really good machine shop
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March 2021 by Eric Seger
Outstanding Builders... absolutely trust these guys to build an engine with both maximum power and full reliability.
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January 2021 by Sean Thomas
Great place. Good people.
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May 2019 by Douglas Ladowski
Good help and fair prices
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April 2019 by Tim Rodda
When you need the absolute best high quality automotive related machine shop services Koerners is the one and only in Arizona.
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February 2019 by Mark Pope
This is the best hot rod engine shop in Tuscon
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February 2012 by Mike B.
Koerner Racing is one of the better machine shops in AZ. In the past 28 years i have had to deal with many machine shops and koerner racing is at the top of my list. They are honest and provide top quality machine work and pay attention to detail. If your looking to build an everyday engine or an all out race engine or even just cylinder heads or tune a carburetor , these are the guys to do the job and do it correctly.
