Molnar Technologies

Molnar Technologies: The Leader in Connecting Rod and Crankshaft Design

Molnar Technologies stands as one of the most respected names in high-performance engine components. Founded by Tom Molnar, the company is the product of over 35 years of hands-on experience designing, engineering, and manufacturing rotating assembly parts for the racing and performance aftermarket. Based in Kentwood, Michigan, Molnar Technologies has built a reputation among professional engine builders and serious enthusiasts alike for delivering precision parts that can withstand extreme operating conditions without compromise.

Engineering Excellence from the Ground Up

Molnar Technologies focuses exclusively on the heart of the engine’s rotating assembly. Their primary manufactured products are engine connecting rods and engine crankshafts, both of which are engineered to tolerances that far exceed OEM standards. The majority of Molnar crankshafts are produced from premium 4340 forged steel and precision-machined to exacting specifications, with select extreme-application parts available in 4340 billet steel with eight-counterweight configurations. These materials and processes — including heat treatment for added tensile strength and shot peening for improved fatigue life — are hallmarks of the brand’s commitment to durability under boost, nitrous, and high-RPM race conditions.

A particularly notable feature of Molnar’s connecting rod sets is the use of custom ARP2000 bolts, manufactured exclusively by ARP and batch-numbered for complete traceability. This attention to detail extends throughout every product line, making Molnar a go-to choice for builders assembling a complete engine crankshaft rotating assembly for street rods, muscle cars, dedicated race cars, and even marine applications.

A Catalog Built for Domestic and Sport Compact Engines

Molnar Technologies offers an extensive catalog covering a wide range of engine families, from classic small-block and big-block Chevrolet platforms to modern LS and Gen V LT engines, Gen III and Gen IV Hemi applications, Ford modular and Coyote engines, and a variety of sport compact powerplants. Whether you’re building a stroker motor for the strip or reinforcing a boosted street engine, Molnar offers both stock-stroke and stroker crank options alongside matching rod sets.

For builders who need the complete rotating assembly solution, purpose-matched engine connecting rod bolts are also available, ensuring that every fastener meets the same exacting standards as the rods themselves. Custom orders are supported on most product lines, making Molnar Technologies a flexible partner for unique or one-off engine projects.

Trusted by Top Engine Builders

Tom Molnar’s background as a former general manager at one of the largest connecting rod and crankshaft manufacturers in the United States gives Molnar Technologies a foundation that few competitors can match. That institutional knowledge, combined with a relentless focus on continuous product refinement, has earned the brand a loyal following among the nation’s top professional engine builders. When the goal is a bulletproof rotating assembly capable of handling serious power, Molnar Technologies remains one of the industry’s most trusted choices.