Sydney Kohl
9/11/2025
I can't say enough good things about GTR High Performance! A couple months ago, I had an error code that kept popping up and after talking to FOUR different mechanics, no one could figure it out....
GTR High Performance
Permanently closed
(53)
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8678 Utica Ave
Rancho Cucamonga, CA 91730
GTR High Performance is a renowned automotive shop based in Rancho Cucamonga, CA, specializing in enhancing vehicle performance.
With a focus on quality workmanship and expert knowledge, GTR High Performance offers a range of services to meet the needs of car enthusiasts and performance seekers.
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Also at this address
Reviews
4.053 reviews
Chris E.
10/5/2025
Gonzalo and Richard's are stand up guys that know their stuff with mustangs. Been going here for over 25 years. Unfortunately, I am a Mopar guy of late which is not their expertise, but would...
Rau B.
4/30/2025
These guys are Mustang whisperers! I have known Ricardo and Gonzalo (GTR) since 2001. NEVER have I been disappointed. INTEGRITY is what I see when I see GTR! These are true friends of mine and...
Oscar C.
1/14/2025
They do great work. For all your Mustang tuning and accessories. From regular service to performance upgrades
Andy C.
5/3/2025
Impossible to get an appointment you just get left on read. Not going to beg for an appointment. Only way you're going to get an appointment is if you're family or you've known those boys for years.
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