Performance Exhaust Systems
Compatible cat-back and axle-back systems, mufflers, tips, and related exhaust components for improved sound and flow.
Performance Parts Installation in Dallas, GA
Build a Vehicle That Feels More Like Your Own
Professional installation for the performance parts and accessories you choose.
From a deeper exhaust note to sharper handling and stronger braking, the right upgrades can change the way you experience your vehicle. B12 Complete Automotive installs compatible performance parts with careful attention to fitment, safety, reliability, and everyday drivability.
ASE-Certified Experience
Customer-Supplied Parts Reviewed
Family-Owned Dallas Shop
Performance-Minded Service
Professional Installation for the Upgrades You Want
Buying a performance part is only the beginning. Proper installation affects how the part fits, functions, sounds, and works with the rest of your vehicle.
Tell us what you want to improve and what parts you are considering. Our team can review the installation request, discuss compatibility, and explain related work that may be needed before the job begins.
- Clear fitment and installation review
- Practical recommendations based on your goals
- Careful installation and final inspection
- Repair, maintenance, and upgrades in one shop
Already purchased a part? Have the vehicle year, make, model, engine, manufacturer, and part number ready when you contact us.
Parts & Accessories
Performance Upgrades We Install
Every installation is reviewed for the specific vehicle, part, application, and current condition. Contact us with the product information so we can confirm the request.
Cold Air Intakes
Performance intake installation with attention to connections, sensor placement, airflow, and vehicle-specific fitment.
Suspension & Handling
Lowering springs, coilovers, shocks, struts, sway bars, and related components for stance, cornering, and road feel.
Performance Brake Upgrades
Compatible performance pads, rotors, calipers, stainless-steel lines, and kits for stronger, more consistent braking.
Tuning Support
Mechanical installation support and a review of known tuning or supporting-modification requirements before work begins.
Custom Parts & Accessories
Custom requests reviewed individually based on the vehicle, product, labor involved, and suitability for street use.
Customer-Supplied Parts
Already Have Your Performance Parts?
We can review customer-supplied performance parts for installation. Sharing the product details first helps us identify fitment concerns, estimate labor, and determine whether additional parts or services may be required.
- Vehicle year, make, model, engine, and trim
- Part manufacturer and exact part number
- Product link or installation instructions
- Your goals and other existing modifications
A Smarter Upgrade Plan
We Consider the Whole Vehicle
Performance work should be planned around more than one new part. An exhaust, intake, suspension component, or brake kit may affect other systems, require supporting hardware, or change future maintenance needs.
- Compatibility with your exact vehicle configuration
- Condition of nearby or supporting components
- Alignment, calibration, or tuning requirements
- Safety, reliability, and real-world drivability
- Follow-up maintenance and inspection needs
All customer-supplied parts and custom installations are subject to inspection, fitment review, and shop approval.
From Idea to Installation
What to Expect
A clear process helps reduce surprises and keeps the project focused on the way you want the vehicle to drive, sound, stop, or handle.
1
Tell Us About the Vehicle and Your Goals
Let us know whether you want more sound, better handling, stronger braking, improved response, or a combination of upgrades.
2
We Review the Part and Application
Our team checks product information, vehicle condition, known requirements, and whether the request is appropriate for our shop.
3
You Receive a Clear Estimate
We explain expected labor and any additional hardware, alignment, maintenance, or supporting work that may be needed.
4
We Install and Inspect the Upgrade
After installation, we inspect the completed work and review relevant follow-up recommendations with you.
Local Performance-Minded Shop
Repair, Maintenance & Upgrades in One Place
B12 Complete Automotive is a family-owned auto repair shop in Dallas, Georgia. Our ASE-certified team can look beyond the new part and consider the condition of the systems around it.
If worn brakes, aging suspension components, exhaust damage, fluid leaks, warning lights, or other concerns could affect the upgrade, we will explain what we find and help you decide how to move forward.
- Clear recommendations before installation
- Complete automotive diagnostic and repair capability
- Quality workmanship for repairs and upgrades
- Convenient online appointment scheduling
Conveniently Located in Dallas, GA
Serving Performance-Minded Drivers Across Northwest Metro Atlanta
Visit us at 200 White Park Drive in Dallas, GA. We serve drivers from Dallas, Hiram, Acworth, Kennesaw, Marietta, Paulding County, and nearby communities.
Bring us the part information and your goals, and we will help you determine the right next step for your vehicle.
Common Questions
Performance Parts Installation FAQs
Helpful answers before you schedule a performance upgrade at B12 Complete Automotive.
Yes. We can review customer-supplied parts for professional installation. Contact us with your vehicle information, part manufacturer, and part number before scheduling. All installations are subject to fitment review and shop approval.
Yes. We install compatible performance exhaust components and systems based on the vehicle and application. Send us the product information so we can review fitment and estimate the installation.
We install many compatible lowering springs and coilovers. The vehicle, current suspension condition, adjustment requirements, and need for an alignment will be reviewed with the request.
It depends on the vehicle and components. Some upgrades work without calibration changes, while others require tuning or supporting modifications. We will discuss known requirements before installation.
Tell us your vehicle and what you want to improve. We can help you think through fitment and installation considerations. For the most accurate review, provide a product link or exact part number before purchasing.
Schedule online or call 770.505.7711. Have your vehicle information and the part manufacturer, part number, or product link ready so our team can evaluate the request.
Ready to Upgrade Your Vehicle?
Tell us about your vehicle, your parts, and what you want to improve.