Molnar Technologies Engine Connecting Rod

Molnar Technologies Connecting Rods: Racing-Grade Precision for Every Build

When it comes to engine connecting rods designed for serious performance, few names carry more weight than Molnar Technologies. Founded by Tom Molnar — a connecting rod engineer with a career spanning Oliver Rods and K1 Technologies — Molnar Technologies has 35+ years of experience designing and building high-quality connecting rods and crankshafts for high-performance racing applications. That depth of expertise is baked directly into every rod the company produces.

4340 Billet H-Beam Construction

The foundation of every Molnar connecting rod is premium-grade material and a disciplined manufacturing process. Molnar Technologies steel H-beam connecting rods are manufactured from 4340 billet steel and heat treated to provide increased tensile strength, then shot peened to further improve durability and increase fatigue life. Except for a few specialty press-fit rods, Molnar Technologies rods all include high-quality bronze bushings, precision machined for use with floating wrist-pin type pistons.

Perhaps the most compelling detail in Molnar's manufacturing story is their tolerance standard. Critical rod dimensions are held to very precise tolerances of +/- .0001 of an inch — the tightest tolerance you will find in the performance and racing aftermarket. All Molnar Technologies connecting rods are finished in the USA at their factory near Grand Rapids, Michigan.

ARP2000 Hardware — Standard, Not an Upgrade

One area where Molnar truly separates itself from the competition is fastener quality. With Molnar rod sets there is no extra charge to step up to ARP2000 hardware, which provides superior clamping force — it comes standard in every piston rod set along with lube and installation instructions. This means the cap screws do not have to be replaced at each engine build the way 8740-material bolts must be, saving time and cost across multiple engine rebuilds.

PWR ADR™ and Power Adder Plus Series for Boosted & Nitrous Builds

Molnar recognized early on that the surge in forced induction and nitrous builds demanded a dedicated rod lineup. The PWR ADR™ rods feature additional strength to handle higher-output engines without adding additional mass in areas that do not contribute to a stronger, more durable rod. For the most extreme applications, the PWR ADR Plus™ series rods are specifically engineered for very high-output engines and are targeted at those using superchargers or turbochargers with high boost levels, as well as very large nitrous shot engines. The PWR ADR design shares the same geometry as the standard H-beam rods but features a thicker beam and extra material on the big end, adding approximately 52–53 grams over the standard H-beams.

An Application Range That Covers Nearly Every Engine

Molnar's selection of 4340 billet steel H-beam connecting rods covers everything from 3-cylinder SeaDoo jet ski engines to V10 Viper engines and most every popular performance engine in between. Included in the lineup are rods for use in normally aspirated engines, turbo and supercharged engines, NOS-boosted engines, as well as stock stroke and stroker configurations. In addition to standard weight-class rods, Molnar offers extra-heavy-duty models for extreme boost and nitrous applications, as well as extra-lightweight models for use in limited or restricted racing classes.

These rods can be used in vintage restored muscle cars, high-performance street cars, drag racing, oval track, road racing, drifting, off-road racing, mud bog, pulling vehicles, and more. Molnar Technologies can also make custom rod sets for many different domestic, sport compact, and powersports engines — making them a go-to resource when off-the-shelf options fall short.

Whether you're building a street-driven LS, a Gen III Hemi with big boost, a Ford Coyote for the strip, or a sport compact engine pushed beyond its OEM limits, Molnar Technologies connecting rods deliver the precision, materials, and engineering pedigree to handle the job. Browse the full selection of Molnar Technologies engine connecting rods and find the right rod for your build.