What makes JESEL different than other valvetrain companies? Without a doubt it is Dan Jesel. Dan is the driving force behind all that JESEL does. He is constantly coming up with innovative ideas such as the MoHawk rocker, low-friction ball-type adjusters, lightweight Keyway roller lifters and belt drives that will survive a 500-mile NASCAR race, or 24 hours at Le Mans. More recently he designed and patented the double roller cam followers for the Modular Ford and Ecotec overhead cam engines. Subtle design features such as the “nested” rollers in the Ecotec followers are classic JESEL innovation. Dan's latest projects include valvetrain systems for race and hot street V-Twins and a valvetrain for NASCAR racers that is stable in excess of 11,000rpm. How does all this come about? Dan and his engineers spend thousands of hours designing and testing parts in JESEL's R&D center, which includes 2 state-of-the-art Spintron machines and a Superflow dyno to validate new concepts and test components for durability.