Phone/Text (803) 980-7537
Address 583 Linkwood Rd
Rock Hill, SC 29730
Hours M-F 8:00 AM - 5:00 PM

DIESEL MAINTENANCE AND REPAIR

Great Results.
No BS.

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Book Your Truck’s Maintenance Now

Specializing in Power Stroke, Cummins and Duramax Engines

About Us

We offer high-quality diesel truck repair, custom upgrades, and other services without the fluff.

When it comes to your truck, experience, skill, and attention to detail make all the difference in getting you back on the road quickly and safely. At State Line Diesel Performance LLC, we are the trusted diesel truck shop in the Charlotte, North Carolina area. With over 15 years of hands-on experience, our team provides the maintenance and repair services your truck needs to perform at its best.

We’ve built strong partnerships with leading brands in the industry, and we use OEM parts to ensure your truck runs reliably mile after mile. From routine maintenance like oil changes, fluid checks, and brake service to complex repairs including engine work, transmissions, and diagnostics, we handle it all with professionalism and no shortcuts.

Your truck is a vital part of your work, and you can rely on State Line Diesel Performance LLC to keep it running safely, efficiently, and dependably. When you need diesel maintenance or repair you can trust, we deliver results—every time.

Learn About State Line Diesel

Why Choose State Line?

Experience

15+ years of experience in the motorsports industry working with Hendrick Motorsports and Stewart Hass Racing.

Fleet Service and Repair

100%

Detail - Oriented

The attention to detail we deliver in all our services is second to none.

Maintenance and Repair

100%

Warranty

We offer a 12-month/12,000-mile workmanship warranty in addition to standard manufacturer warranties for our parts.

Customer Satisfaction

100%
Schedule Service

State Line Diesel Performance LLC

Book Your Service

Our Services

Truck Maintenance & Repair

Schedule truck Service

Vehicle Customization

Explore Custom Options

Fleet Maintenance & Repair

Manage Your Fleet

Wheels & Tires

Browse wheels & tires

What Our Customers Say

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I was having a fueling issue on my truck, and the guys over here at State Line Diesel Performance LLC did diagnostics and found I had an injector going bad. Their communication was great throughout the whole process. They are very professional and completed the work in a timely manner. Truck runs like a top again. Highly recommend this shop!

5
Brock R.
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I had my Rough Country leveling kit put on my 2016 4Runner by the team at State Line Diesel Performance LLC, and the guys did a phenomenal job. Jake & Dawson answered all my questions and took care of my car just a few hours after I dropped it off. I can’t say enough about their professionalism & their knowledge of the business. I couldn’t be happier with the end result, and I plan on using these guys for all my cars’ needs. Top-notch service!

5
McCain B.
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Jake and the crew are awesome to work with. They can handle anything from routine maintenance or mid to wild one-off builds. The team did a fantastic job customizing my truck. The truck gets compliments everywhere I go and performs equally well. Glad to finally have talent in Rock Hill that can support the truck enthusiast crowd.

5
Jeff P.
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Our Diesel Repairs in Action

See Truck Builds

See Truck Builds

Check Out Wheels

Check Out Wheels

View Engine Work

View Engine Work

Our Suppliers

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Our Amenities

Waiting Room

Waiting Room

Complimentary Wi-Fi

Complimentary Wi-Fi

Fresh Coffee

Fresh Coffee

Relax While We Work on Your Truck

We know your time is valuable. That’s why our shop is equipped with a comfortable waiting area designed to make your visit as smooth as possible. While our technicians take care of your truck or diesel vehicle, you can take advantage of:

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Free Wi-Fi

Stay connected, catch up on work, or stream your favorite shows.
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Comfortable Seating

Relax in a clean, climate-controlled environment.
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Convenient e-Waiting Options

Prefer not to wait on-site? We’ll keep you updated digitally so you can step out and return when your vehicle is ready.
At our shop, we’re not just focused on top-notch repairs and maintenance – we’re committed to making your experience easy, efficient, and stress-free.
Reserve Your Spot – Coffee’s On Us!

Schedule Your Diesel Repair Today –

Get Back on the Road Faster