Custom Drag Racing Transmissions & Performance Builds
Built for the Strip. Engineered for the Win.
In drag racing, every millisecond counts, and your transmission is the critical link between massive horsepower and the pavement. At Harmon Performance Transmission, we specialize in high-stakes drivetrain engineering. Our ASE-Certified technicians design and build custom transmissions that thrive under extreme power and rapid-fire shifts, giving you the competitive edge and the reliability you need to dominate the lane.
Our Drag Racing Specialized Services
Custom Drag Racing Transmissions
We engineer and assemble custom transmissions from the ground up, specifically for drag racing applications. These units are built to withstand extreme torque loads and deliver the consistent performance required to excel on the strip.
Torque Converter Upgrades
Maximize your power transfer and perfect your launch with high-stall torque converters tailored for drag racing. Our custom converters are designed to handle high RPMs and provide the powerful, consistent launches needed to shave time off your ET.
High-Performance Clutches & Flywheels
For manual racing setups, a precise clutch is the difference between a win and a wash. We offer high-performance clutch kits and lightweight flywheels designed to improve throttle response and enhance your vehicle’s acceleration off the line.
Gear Ratio Optimization
Finding the ideal balance between low-end acceleration and top-end speed is a science. We offer gear ratio optimization services to ensure your transmission is perfectly matched to your engine’s power band and tire size.
Race-Proven Components
We don’t cut corners on quality. Our builds utilize race-proven components, including reinforced gears and high-strength materials, to enhance durability under the most extreme racing conditions.
Transmission Fluid Coolers
High-stress runs generate massive amounts of heat. We install and maintain heavy-duty transmission fluid coolers to keep your temperatures stable, preventing fluid breakdown and protecting your internal components.
Speed & Reliability Testing
We don’t just build it; we verify it. Before you head to the track, we perform rigorous testing to ensure your transmission meets the strict performance and reliability standards required for competitive racing.
The Harmon Performance Advantage
As a TransGo Tech Certified shop and ATSG member, we have access to the latest technical innovations in performance shifting. We understand that in drag racing, “stock” isn’t an option.
- Precision Engineering: Every build is handled with a focus on tight tolerances and maximum strength.
- Expert Maintenance: From post-race fluid changes to mid-season adjustments, we keep your race car track-ready.
- Family-Owned Dedication: We are committed to your success on the track and provide the personal attention your project deserves.
Ready to Launch?
Whether you’re building a bracket racer or a pro-street machine, get a transmission that can handle the heat.