I needed reassurance that I had purchased the right pump for my build. I used the chat feature and got the 👍👍. Thanks,

I purchased this product cheaper then I was able to find on other sites. Plus you get the added bonus reward points which add up quickly. I also got it in 2 days. I am thrilled to have found these guys who are top notch for my future needs. Thanks,

I have been working with Flatirons Tuning for a couple years now, and have always been satisfied with the parts and customer service I have received. These are genuine car people who want to help other car enthusiasts get what they want out of their cars. This is apparent because my projects are generally out of the box and they keep an open mind and are still very helpful even though my plans are not the same as theirs would be.

fast shipping. great prices. awesome customer service. better than most other car parts places.

Great shop full of knowledgeable employees. I'll be picking up lots of performance parts for the Subaru from here!

I bought a few things from Jon, and they have been great to me! Their prices are reasonable and they helped me out with shipping etc. Jon and Scotty have been a great help to me on other matters as well. I cannot thank both of them enough!

I have to give a shout out to the awesome folks at Flatirons Tuning in Boulder, CO. I was traveling through Denver and my OEM charge pipe cracked. I didn't want to replace it with an OEM version (cost too much for a plastic piece) so I called around to see who has an aftermarket charge pipe in-stock so I can be back on the road. Flatirons Tuning was listed in the COBB Tuning website as one of their dealers - and sure enough, Flatirons was the ONLY one in the Denver area that had the part! They were very helpful over the phone and had the parts ready for me when I arrived. The after sale support was also top notch! Both Scott and Jon spent time with me giving tips on proper adjustments to the Turbosmart Compact BOV which they also had in stock! Very impressive. I highly recommend calling these folks first.

Always a great place to go and get parts and help. John and his staff at Flatirons Tuning make you feel comfortable and confident in your purchases.

Excellent service and quick turn around on orders. Everyone on the team is friendly and helpful. Prices are as good or better than most online retailers. Flatirons will continue to get my business for all my Subaru needs.

Flatirons tuning really went above and beyond with this last order. This is first time I have made a purchase from them and I am a customer for life after this. They shipped my items very quickly and even notified me via email when my order shipped. Two thumbs up!!!

helped me get my.parts quick!

Guys at the Flat Irons are the best ! Very knowledgeable, helpful and priced very well too. Jon, Viet and Scott technically help me build my engine over the phone. I always go to these guys for my Subie parts and advice. Thank You !

Stopped in on a Saturday on my way to visit some family in the area. Within a minute of me walking in I was greeted by Scott who was in the back working on something. Scott was incredibly friendly and we talked cars for a little bit before I got on with my mission. I was in search of a short shifter for my Impreza WRX and Flatirons Tuning came in cheaper than the competition and I was able to pick it up while I was in visiting. Plus, Scott was a wealth of knowledge when it came to the install of the shifter bushings I had also picked up, which will come in handy since the rear bushing is kind of a pain. Only major complaint is that the location is a little weird and no real signage to indicate they are there so it took some looking. Overall, very happy with my stop and purchase.

Best place to get parts to tune your Subaru.

Scott talked me through my questions and hooked me up with what I needed. Great to have this kind of shop in Colorado. Thanks guys!

Dealer Subaru parts for a discount. People have been very helpful and they can usually get the part if they don't have it same day.

Great place… great peeps

Friendly and knowledgeable in the Subaru parts realm. You can depend on these folks.

Love this place. I have spent quite a bit of money here over the past two years. From building my 2012 STi to buying OEM Subaru parts, these guys are great. Always happy to help and answer any of the dumb questions I have. Look forward to buying more stuff in the future

I ordered rod bearing and main bearings, but got two set of Rod bearings with no main bearings. Scott sent me a return label and had the bearings in the mail with next day air shipping. It's good to deal with a great seller.