--- title: Contact Us Subaru Turbo upgrades description: 5250 performance shop in Longmont Colorado | Denver Subaru high performance shop | We build high performance cars --- [![5250 Performance Dyno Shop Colorado](https://www.5250performance.com/hs-fs/hubfs/artwork_5250/Snip20170305_123.png?width=122&height=302&name=Snip20170305_123.png "5250 Performance Dyno Shop Colorado")](https://www.5250performance.com/) - [Home](https://www.5250performance.com) - [About Us](https://www.5250performance.com/about-us) - [Fab](https://www.5250performance.com/fabrication-services) - [Gallery](https://www.5250performance.com/5250-performance-car-gallery) - [Tuning / Upgrades](https://www.5250performance.com/performance-tuning) - [Need a Tuner](https://www.5250performance.com/tuner-page) - [Custom Fabrication](https://www.5250performance.com/fabrication-services) - [Line Card](https://www.5250performance.com/5250-line-card) - [Haltech ECU](https://www.5250performance.com/haltech-ecu) - [Mil Spec Wiring](https://www.5250performance.com/mil-spec-wiring-for-high-performance-cars) - [Repair](https://www.5250performance.com/automotive-repair) - [Current Gallery](https://www.5250performance.com/performance-gallery) - [IAG Subaru Blocks](https://www.5250performance.com/iag-subaru-engine-blocks-colorado) - [Most Popular IAG Blocks](https://www.5250performance.com/our-popular-iag-blocks) - [Dyno](https://www.5250performance.com/dyno-tuning) - [Performance Blog](https://www.5250performance.com/blog) - [Contact Us](https://www.5250performance.com/contact-us) [![Need a Tune?](https://no-cache.hubspot.com/cta/default/532455/e98cee66-8412-4c1b-b0be-676df9108236.png)](https://cta-redirect.hubspot.com/cta/redirect/532455/e98cee66-8412-4c1b-b0be-676df9108236) ## Need Performance Mods? Drop us a line. We'd love to chat. High Performance Shop | We're never too busy to talk to someone as nice as you. \[fa icon="envelope"\] ### Email us: [Mike@5250performance.com](mailto:Mike@5250performance.com) Scroll down for Map to our location   \[fa icon="phone"\] ### Call us:  970-315-2501 Mon-Fri 9 am-5 pm (MT)   \[fa icon="home"\] ### Find us: 3987 South Valley Drive Longmont, Colorado, 80504 USA # Longmont Colorado | We specialize in high performance cars Define / Reach your expectations, and reach your driving potential, how much power can you handle?   We respond to all form submissions, e-mails, and phone calls. If you submit a form and do not get a response within 2-3 week days, please check your spam folder. ### Contact Us We're always happy to chat about what we do, why, and how. Get in touch with us and start the conversation. We'd love to hear from you.   5250 Performance 3987 South Valley Drive Longmont, Colorado  80504 970-315-2501   Mike@5250performance.com     ## Performance for your Vehicle starts here Blog subscribers get email updates daily, weekly, or monthly. Auto-magically. #### About Us We are a performance shop located in Longmont, Colorado.  Our specialty is forced induction performance cars.  We have experience in basic repairs to 1400 horsepower supercharged Hellcats.  Start something special. Learn More \[fa icon="long-arrow-right"\] [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) \[fa icon="linkedin-square"\] [\[fa icon="twitter-square"\]](https://twitter.com/5250performance)  Copyright 2026 | Designed with \[fa icon="heart"\] by [Tru-Market](http://www.Tru-Market.com) \[fa icon="chevron-up"\]