Since 1975, GT Technologies has designed and manufactured high-precision valvetrain systems, machined components and stamped assemblies for performance-critical engine applications. The company is known for creating stamped roller finger followers that have become standard across the industry, and its Westland Technical Center supports product design, analysis, prototyping and testing with a team of 25 engineers. GT Technologies operates five U.S. locations with more than 500 employees and holds ISO 9001:2015, ISO 14001:2015 and IATF 16949:2016 certifications across its facilities.
ISO 9001:2015
ISO 14001:2015
IATF 16949:2016
Advanced Product Quality Planning (APQP)
Compliance program
Del WestFounded in 1973 by aerospace engineer Al Sommer, family-owned Del West makes precision mechanical components and systems from advanced materials, with a particular reputation for engine valvetrains used in Formula 1, NASCAR, MotoGP and endurance racing. The company now operates four production sites across the United States and Switzerland, applying its racing know-how to high-performance vehicles, Swiss watch cases and components, and aerospace applications. Del West employs almost 300 people and remains under family leadership, with Mark Sommer taking over group management in 2021.VALENCIA, CA
Harland SharpBorn from a Northeastern Ohio tool-and-die maker’s response to failing stock rocker arms in the 1950s, Harland Sharp manufactures aluminum roller-tip rocker arms and other valvetrain parts for racing engines. Still family-owned and operated, the Strongsville company makes every part in the USA, hand-inspects each rocker before shipment, and offers a lifetime guarantee against manufacturing defects. The business is now carried into its third generation while remaining focused exclusively on rocker-arm development and production.STRONGSVILLE, OH
Haltec CorporationFrom its 125,000-square-foot Leetonia, Ohio headquarters, Haltec Corporation designs and manufactures tire valve systems and inflation accessories. The company has spent more than 45 years developing specialized solutions for demanding tire applications, including the Super Large Bore designs it introduced to the industry and its newer Mega Bore system. Haltec’s manufacturing, engineering and distribution operations are supported by ISO 9001, ISO 14001 and ISO/IEC 17025 certifications, and it has received Caterpillar’s Platinum Supplier Award every year since 2015.SALEM, OH
PrecipartSince 1950, Precipart has engineered and manufactured high-precision custom mechanical components, gears, motion-control systems and assemblies for medical, aerospace and industrial applications. The family company brings more than five generations of experience to miniature parts with features measured in microns, while also supporting projects from early design through production. Its work has contributed to robotic surgery, ventilators, orbital rockets and Mars exploration, and its U.S. and Swiss facilities hold ISO 9001, ISO 13485 and AS 9100 certifications.FARMINGDALE, NY