Nitro / Alcohol
Shaft Rocker Arms
Ultra Strong. Direct Replacement.
About Jesel Pro Steel Top Fuel Series Shaft Rockers
Jesel's Pro Steel Top Fuel Shaft Rockers are engineered to deliver unrivaled performance and reliability for Nitro and Alcohol applications. Proven through hundreds of wins and numerous championships these rockers are the choice of top engine builders for their exceptional durability.
Advanced Material and Manufacturing
Each Jesel Pro Steel Top Fuel Shaft Rocker is manufactured from high-strength annealed 4340 steel, providing exceptional durability and resistance to deflection up to 10,000 psi. Designed using the latest FEA software, these heat treated steel bodies are crafted for maximum strength and longevity. Additionally, they feature a polished finish and special coating to withstand the corrosive nature of Nitro Methane, ensuring long-lasting performance.
Precision Engineering
Jesel Pro Steel Top Fuel Shaft Rockers incorporate a precision honed Ampco 45 bushing, which, when paired with our DLC coated shaft, results in an extremely low coefficient of friction. The rockers come standard with a .550” diameter tool steel nose roller that ensures smooth and efficient valve operation and are machined to accept a 7/16-20 or 12mm adjuster, allowing for easy installation and adjustment.
Enhanced Oiling and Customization
The intake rockers are machined with an internal oil passage for direct shaft oiling, enhancing lubrication and performance. Available in various ratios, Jesel Pro Steel Top Fuel Shaft Rockers can be tailored to your engine requirements. Custom engineering services are also available.
Features & Options
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Manufactured from high-strength annealed 4340 steel, providing exceptional durability and resistance to deflection up to 10,000 psi.
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Rockers incorporate a precision honed Ampco 45 bushing.
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CNC machined, heat treated alloy steel lash adjusters have been proven through years of abuse in our Pro Series Rockers.
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Fully rebuildable to Jesel factory specifications through the Jesel CPR department.
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Rockers can be ordered in various ratios to suit your specific engine build. Some applications are ratio limited.
Applications
AJPE Top Fuel Head
BAE Top Fuel Head
BAE Alcohol Head
Top Fuel Shafts
These direct replacement Top Fuel Shafts are manufactured from through hardened H-13 tool steel with a stout .280” wall thickness. They are then processed with REM/ISF® Superfinish and DLC coated for improved wear and reduced friction.
Top Fuel Adjusters
These 7/16-20 and 12mm tool steel lash adjusters are through hardened and feature a .375” diameter nitrided ball end. A standard internal oiling circuit directs oil to the pushrod cup on intake rockers and is optional on exhaust adjusters.
Top Fuel Pedestals
Manufactured from anodized aluminum, Jesel’s Top Fuel Pedestals add needed stability to the highly stressed nitro valve train. Designed to be used with all popular Top Fuel heads, our pedestals use all current mounting locations and are engineered with a revised shaft location to greatly improve valve train geometry.
Our Rocker Story
When Chevrolet introduced its small-block V8 in 1955 one of its highly praised features was its lightweight stamped steel rocker system. With little more than a factory Duntov solid lifter cam a 7,000rpm redline was realistic. This economic valvetrain had its limits though. As long as mild seat pressures of around 100 pounds were used with low-lift hydraulic or flat tappet cams, life was good. As aftermarket cam manufacturers started grinding higher lifts, the rocker’s shortcomings began showing up. First, the rockers bottomed-out on the rocker studs because the slots were too short, then as spring pressures increased the studs pulled or broke out of the head bosses. The fixes came both from the aftermarket and GM.