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At Circle D Transmission, we’re excited to transform your 6L80 into a built 6L80 transmission that delivers unmatched power, durability, and reliability—whether you’re hitting the track or cruising on your daily driving route. Since 1976, we’ve been at the forefront of the transmission industry, earning our reputation as trusted leaders.
With our innovative custom modifications and high-quality billet upgrades, including our billet pump rotor, clutch pack, and reinforced valve body, choosing us for your rebuild is a complete solution you won’t regret. We offer a full kit that includes upgraded clutches, pistons, pressure plates, and more—designed to replace your stock clutches and eliminate weak points that often crack under load.
Our billet converter is a nice addition that improves stall characteristics and holds pressure longer for better engine response. Whether you want a build that retains drivability for the road, or a setup built to hold power for competition, we offer flexible tuning options to match your goals.
Every unit is expertly installed, tested, and ready to ship nationwide. And best of all, our packages are competitively priced and don’t require unnecessary upsells—just proven performance, trusted design, and long-lasting results.
Explore the options below to turn your transmission into a system you can count on—built to run, built to last, and built by the pros at Circle D Transmission.
When it comes to choosing a reliable partner for your 6L80 transmission rebuild, Circle D Transmission stands out for one simple reason: we get the job done right. Our foundation is built on decades of knowledge and experience, paired with a deep passion for innovation and new technologies. This unique blend has positioned us as leaders in the transmission industry. We specialize in high-performance rear-wheel drive transmissions for both Ford and GM vehicles, ensuring that your horsepower reaches the pavement where it belongs—whether you’re working on a custom show vehicle or preparing for street and strip action.
At Circle D, transmission rebuilds are more than just a business for us; they are a true passion. Our love for what we do is evident in every aspect of our service. From the moment you reach out to us, our team of experts is ready to assist you with any questions or concerns about your 6L80 transmission rebuild. We pride ourselves on our accessibility and customer service, ensuring that you feel supported throughout the entire process. Even after your transmission rebuild is complete, our commitment to you doesn’t end. We remain available for any post-service assistance you may need, reinforcing our dedication to your satisfaction. For firsthand accounts of our exceptional service, feel free to explore our Google reviews by clicking here!
Over the years, Circle D has expanded significantly from its humble beginnings as a two-bay shop. We have evolved into the go-to destination for transmission rebuilds in Houston, garnering a loyal customer base. Our growth has enabled us to extend our services beyond the local community, offering high-performance transmission parts and rebuild services for online purchase. This means that horsepower enthusiasts from all corners of the world can access the same quality 6L80 transmission rebuilds that our Houston neighbors have come to rely on.
As a small, family-owned business, we take immense pride in seeing our transmission rebuilds and parts being utilized in vehicles both near and far. Our commitment to quality and service is reflected in every rebuild we undertake, and we are thrilled to share our expertise with a broader audience. Whether you’re a local customer or a distant enthusiast, we’re here to help you unleash the full potential of your vehicle.
If you’re interested in learning more about our 6L80 transmission rebuild services, don’t hesitate to contact our knowledgeable team today. We’re eager to assist you in understanding the process and options available. Additionally, you can kickstart your journey by completing our performance questionnaire, which will help us tailor our services to meet your specific needs.
The Crew at Circle D Transmission is here to ensure that you not only achieve outstanding performance from your vehicle but also enjoy every moment behind the wheel. With our extensive experience and dedication to excellence, we are ready to help you take your driving experience to the next level.
In conclusion, when you think of transmission rebuilds, think of Circle D Transmission. Our expertise, customer service, and passion for performance set us apart. We invite you to join our growing family of satisfied customers and experience the Circle D difference for yourself. Contact us today to learn how we can help you maximize the performance of your vehicle. Let’s get your horsepower to the ground and make every drive an exhilarating experience! We look forward to serving you and being part of your automotive journey.
Stay Safe and Have Fun!
The Crew at CDT
Our built 6L80 transmission kit includes a billet pump rotor, upgraded clutch pack, heavy duty pressure plates, high-friction clutches, performance pistons, and a reinforced valve body. This complete solution replaces stock clutches and significantly improves durability and power handling.
Yes, our design retains smooth drivability for daily use while delivering the durability and pressure control needed for track or high-performance applications. It’s a versatile build ideal for both road and race.
A billet converter improves stall characteristics, enhances torque multiplication, and reduces heat—making it a critical upgrade for better performance, reliability, and engine response under load.
Yes, custom tuning is recommended to match the transmission’s performance profile to your engine. This ensures optimal shift points, pressure control, and overall driveability.
Yes, we ship fully assembled units nationwide. Pricing varies based on the components selected, such as billet upgrades, stall converter options, and the inclusion of Alto clutch materials or steel reinforcements.