Amazing Customer service and great prices! John has been amazing in answering all questions and its crystal clear they love keeping there customers happy! Appreciate you guys!

Flatiron has the best OEM prices. Even when they do not have an item listed on the site, just call and they will add it to the website for you to purchase. They make Subaru projects as simple as it can get with great descriptions and videos.

These guys rock! If you have a high performance vehicle and want information on aftermarket or OEM parts these guys are very knowledgeable. They also have great pricing on parts, definitely check these guys out. I have ordered multiple times and they have a great option for a safe local pick from Boulder, CO. Keep up the good work fellas.

I have used these guys through my entire build. Great prices, shipping breaks on certain dollar amounts help a lot! Great service from every one!! No complaints. A matter of fact a bolt was misplaced when shipped with one of my orders. They replaced it. No struggle, no stress. That simple act has kept me coming back to spend more. Even when I could buy else where. They have earned my trust for what you can't buy, GOOD SERVICE.

I keep finding myself coming back to Flatiron because their prices are right and service is top notch! Product descriptions will answer all of your questions 99.9% of the time and the other 00.1% of the time, they are a phone call away!

The Grimmspeed AOS is a great product. Definitely helped with my blow by. The guys at Flatiron Tuning are very informative and the delivery was fast.

Exact parts as described that came on time as always!

Though it's unfortunate I am rebuilding the engine on my '08 Outback, I could not be happier with the quality provided by Flatirons Tuning! This OEM short block from Subaru is exactly what I need to get my engine running again and the car back on the road. Very well packaged and protected from the not-so-careful shipping company people. I received the package in less than a week of ordering which is very timely. My only complaint was that the buffalo sticker was forgotten, but, after a quick phone call, great customer service put one in the mail and I had my sticker a couple days later! Excellent people, happy to work with them and will be back soon for more parts!

Best pricing anywhere! Beats any website or shops price ! Product is completely brand new in the original packaging and has super fast shipping ! Customer service was amazing when I called !

Jon was great! He was able to arranged for a evening pickup. Great personal customer service. A+ local shop

Purchase and shipping was easy with Flat Irons Tuning. Can't wait to get the block in the car and making power!

I had called them to make sure I was ordering the correct product for my application. Hung up the phone, placed the order, and two days later FedEx was at my door.

I have to say FlatIrons takes care of every detail in there kits. They also provide all the technical support I wanted for free! Very happy so far.

Helped us out in a pinch with the right part, customer service was awesome! Overnight delivery, part worked as described. Very impressed with Flatirons Tuning

Great people very friendly.

Received all the parts in a timely manner! All products arrived in pristine condition and well packaged. Can’t ask for anything more! Parts are at mechanic being assembled as we speak!

I bought this shirt simply because they are a great group of guys involved in racing and I wanted to show my support. Shirt was nice enough that my wife stole it from me and now I no longer have one...I am now sad.

I live an hour away from these guys, id make the trip if I lived 4 hours away. Good people and no bs

I don't know how, but Flatirons Tuning beats prices from everyone. I just bought a Seibon Carbon Trunk for my WRX, it was listed at $1060 on seibon's website, and every other online retailer I came across. Flatirons sold it to me for $901 pre-tax. 10/10 Aside from that, Scott helped me decide on some mods I should do to get even more power out of a stage 2 build. Super knowledgeable on everything Subaru, I can't recommend enough that you go here if you have any questions about your car.

Never had an experience like this. The best experience I have ever had with anyone in sales. Very friendly, very professional