Still spending aggravating hours adjusting your stud rockers only to have to repeat the process next weekend? If the answer is yes, then Jesel Sportsman Series rockers are the solution for you. Since their release in 2001, Jesel Sportsman Series rocker systems have proven themselves to be the ultimate replacement for inadequate stud rocker assemblies. Easily able to handle today’s aggressive springs and cam profiles, these 2024 aluminum bodied shaft rockers are designed to withstand open spring pressures up to 900 lbs while maintaining precise valve lash settings. Both racers and engine builders have been rewarded with years of reliable, trouble free service of their Sportsman Series rockers on countless applications from daily drivers to bracket drag cars, various marine applications, oval track dirt and asphalt racing.
JESEL SPORTSMAN SERIES kits are designed to bolt on without any cylinder head modifications and in most cases still fit under a stock valve cover. The rocker geometry is preset and engineered using the common valve supplied with the particular cylinder head to provide a bolt-on and go installation. Thanks to Jesel’s extensive state-of-the-art CNC machining center and a closely controlled manufacturing process, these specially engineered cost effective rocker systems can be delivered to your door just days after placing your order.
JESEL PRO SERIES SHAFT ROCKERS Championship winning racers in virtually every form of racing from NHRA Pro Stock to Sprint Cup rely on Jesel Pro Series shaft rockers to get them into the winners circle. Used by top engine builders worldwide, Jesel rockers continue to set the standard by which all others are measured. The excellent mechanical properties inherent to our custom blended 7000 Series aluminum alloy allows for the design of an extremely durable and lightweight valvetrain assembly. Tensile strength of our custom blended alloy at 300° far exceeds that of the less expensive, industry standard 2024 alloys. Low moment of inertia along with FEA designed bodies insures that lobe lift is not wasted due to rocker body deflection. The Pro Series rocker systems are built and custom manufactured to your specifications. Anything from rocker ratio to adjuster offset to lightening options can be tailored to your specific needs. A shotpeened surface finish along with a profiled rocker tail and a clipped-pin nose roller are standard features found on the Pro Series kits. Even the rocker stands can be custom ordered if needed to compensate for longer than stock valve lengths.