ATI Performance Products Axle Shaft
ATI Performance Products: Over Six Decades of Race-Proven Engineering
ATI Performance Products, headquartered in Gwynn Oak, Maryland, has been engineering race-winning performance parts since 1961. What began as a local transmission shop evolved into one of the most respected names in American motorsport — a family-owned manufacturer whose products are developed and proven on the dragstrip before reaching customers around the world. Every component ATI makes is proudly manufactured in the USA, and the brand holds over a dozen U.S. patents that reflect decades of relentless innovation.
ATI's reputation is built on the principle that the best performance parts come from real-world racing experience. Their engineers don't just design on paper — they test every product under the brutal demands of NHRA and IHRA competition, earning SFI certification and the trust of serious racers across virtually every motorsport discipline. From bracket racing to pro-level drag racing, ATI components regularly find their way to the winner's circle.
The ATI Super Damper®: A Class Apart in Harmonic Balancers
ATI's most iconic product is the Super Damper® harmonic balancer, a torsional damper engineered to protect crankshafts from the destructive harmonic vibrations generated by high-output engines. Unlike OEM rubber-bonded balancers that degrade under heat and high RPM, the Super Damper uses precision-machined, elastomer-based dampening technology specifically designed for performance and racing applications. The result is not just improved engine longevity — many builders report measurable gains in horsepower and torque after making the switch. ATI offers Super Dampers for an enormous range of engine families, making them one of the most versatile balancer manufacturers on the market.
For engines where underdrive or custom pulley configurations are desired, ATI also produces engine harmonic balancer pulleys that complement their Super Damper lineup. These machined aluminum pulleys allow builders to fine-tune accessory drive ratios, reduce parasitic drag, and optimize power delivery — all while maintaining the crankshaft protection that ATI is known for.
Transmission & Driveline Expertise
Beyond engine protection, ATI is a powerhouse in the world of performance transmission components. Their catalog spans competition transmissions (including their legendary Superglide® and TH400 builds), Treemaster® torque converters, Compu-Flow® valve bodies, and precision-engineered automatic transmission flexplates and adapter kits. Each of these components is designed with the same race-first philosophy — built to handle extreme power levels and repeated abuse without failure.
Whether you're building a dedicated race car or upgrading a street/strip machine, ATI's integrated approach to driveline engineering means their components are designed to work together as a system, delivering consistent performance from engine to wheels.
Why Builders and Racers Choose ATI
- Made in the USA: Every product is manufactured at their Maryland facility, ensuring strict quality control.
- SFI Certified: ATI's harmonic balancers and flexplates meet SFI specifications required for NHRA and IHRA sanctioned competition.
- Patented Technology: Over a dozen U.S. patents back ATI's innovations in damping, transmission, and driveline design.
- Racing Heritage: More than 60 years of track testing means ATI products are refined by real competition, not just the engineering lab.
- Broad Application Coverage: ATI offers fitments for a vast range of domestic V8 platforms and beyond.
From the crankshaft to the transmission, ATI Performance Products delivers the precision engineering that serious performance enthusiasts demand.