Underground Dynamics

Underground Dynamics Performance and style to be proud of. We founded Underground Dynamics in 2007 and have continued to develop it because of a common love for cars.

dedicated to bringing the top performance parts and accessories at the most affordable price in the market, not only do we sell parts but we can also get our hands dirty under the hood. We are a lifestyle brand that promotes the custom performance car culture through its parts offerings, resources, and services. We believe that expressing yourself through your car---whether its performance, styling, or both---is special. We aim to be the best resource for that expression.

BRZ 2013-2021. 12mm hood clearance. 8mm fender gap. 2-hour install. No mods. Carbon fiber and fiberglass only. No plast...
05/25/2026

BRZ 2013-2021. 12mm hood clearance.

8mm fender gap. 2-hour install. No mods. Carbon fiber and fiberglass only. No plastic.

If you want numbers, not guesses, you’re in the right shop.

Shop the specs. Build it right. 🔧🚗

BRZ build. Carbon everywhere. Numbers don’t lie.12 lbs lighter. 18% more downforce. Every part fits. No drama.Splitter, ...
05/25/2026

BRZ build. Carbon everywhere. Numbers don’t lie.

12 lbs lighter. 18% more downforce. Every part fits. No drama.

Splitter, skirts, rear wing. All carbon fiber. Built for the chassis. Not universal. Not guesswork.

See the specs. Shop the kit. You know what to do. 🚗

TL owners, this is what precision looks like.04-08 Acura TL TruHart StreetPlus Coilovers. 14 kg/mm front. 7.2 kg/mm rear...
05/23/2026

TL owners, this is what precision looks like.

04-08 Acura TL TruHart StreetPlus Coilovers. 14 kg/mm front. 7.2 kg/mm rear. Adjustable ride height. Twin-tube damping.

Fits UA6/UA7. No fitment guessing. No compromises.

Lower the center of gravity. Tighten the handling. Dial in your stance from subtle to aggressive. Daily driver friendly. Weekend ready.

This is how you build a TL that handles.

Shop the full setup: https://www.undergrounddynamics.com/products/th-h808-1-truhart-coilovers?utm_source=facebook&utm_medium=social&utm_campaign=organic_2026_05&utm_content=product&utm_term=th-h808-1-truhart-coilovers

BRZ. Stock vs. full aero. No contest.12lbs lighter. 18% more downforce. Carbon splitter, side skirts, wide fenders, rear...
05/23/2026

BRZ. Stock vs. full aero. No contest.

12lbs lighter. 18% more downforce. Carbon splitter, side skirts, wide fenders, rear wing. All fit ZC6, 2013-2020. 10mm clearance. No trimming. No drama.

Owner swapped every panel for real gains—not just looks. Says install was "easier than finding a torque spec on a forum."

Want specs that add up? Shop the full BRZ kit. undergrounddynamics.com

12lbs lighter. 18% more downforce. No hype. BRZ owner dropped our carbon kit. Fitment? Tight. Every panel flush. No gue...
05/23/2026

12lbs lighter. 18% more downforce. No hype.

BRZ owner dropped our carbon kit. Fitment? Tight. Every panel flush. No guessing, just results.

Splitter, fenders, wing, coilovers. Built for BRZ, 2017-2020.

Want specs that add grip, not drama? Check the full parts list. You know what to do. 🔧

BRZ chassis. Real numbers, zero guesswork here.12mm hood clearance. 8mm fender gap. Two hours to install. No chassis mod...
05/11/2026

BRZ chassis. Real numbers, zero guesswork here.

12mm hood clearance. 8mm fender gap. Two hours to install. No chassis mods. Carbon or fiberglass. Built for street or track.

Check your fitment. Get it right the first time. 🔧

Shop the specs at undergrounddynamics.com

Wider. Grippier. Built.S550 wide-body kit with aggressive stance and track-ready geometry. More contact patch. More cont...
04/17/2026

Wider. Grippier. Built.

S550 wide-body kit with aggressive stance and track-ready geometry. More contact patch. More control. Zero compromise.

Fitment specs in bio 🔗

12mm hood clearance. 8mm fender gap. No guessing. Just numbers. BRZ 2013-2021. Carbon fiber suspension arm. Two-hour ins...
04/13/2026

12mm hood clearance. 8mm fender gap.

No guessing. Just numbers. BRZ 2013-2021. Carbon fiber suspension arm. Two-hour install. No mods needed.

Fitment is the difference between built and botched. Details at the link. 🔧

Wide. Low. Built for grip, not guesses. RF-C with a 70mm wide body kit and staggered 19x10/19x12 wheels. Carbon and fibe...
04/12/2026

Wide. Low. Built for grip, not guesses.

RF-C with a 70mm wide body kit and staggered 19x10/19x12 wheels. Carbon and fiberglass. No plastic.

Fits Lexus RC, 2015-2024. Clearance: 2.5" front, 3.2" rear.

You want fitment? This is fitment.

See the numbers. Build it right. 🔧

Two BRZs. One workshop. Zero fitment drama.Right side: carbon hood, widebody kit. 12lbs lighter. 18% more downforce. No ...
04/06/2026

Two BRZs. One workshop. Zero fitment drama.

Right side: carbon hood, widebody kit. 12lbs lighter. 18% more downforce. No trimming. No gap issues.

Real build. Real specs. Photos sent by the owner, not our marketing team.

If you want parts that fit, shop here. www.undergrounddynamics.com

🛠️

Address

Santa Ana, CA
92704

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm
Saturday 9am - 5pm

Website

Alerts

Be the first to know and let us send you an email when Underground Dynamics posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Underground Dynamics:

Shortcuts

Share

Category