Sportsman Steel Series


Shaft Rocker Arms

Affordable. Replacement. Steel.

About Jesel Sportsman Steel Shaft Rockers

Jesel engineers have combined the innovative features of our Jesel Pro Aluminum Rockers with the unmatched durability of our Jesel Pro Steel Rockers. Jesel Sportsman Steel Shaft Rockers offer engine builders the ultimate solution in high strength steel rockers, available at an extremely affordable price. These rockers can be seamlessly integrated as an upgrade to existing Jesel Pro Aluminum shaft rocker systems or ordered as standalone components.

Optimized for Performance and Longevity
Every Jesel Sportsman Steel shaft rocker is built with the same high quality components as our Pro Aluminum series, but enhanced for superior durability. These rockers feature a .625" wide body with an ultralight slot to reduce both weight and moment of inertia, making them perfect replacements for Pro Aluminum bodies.

Advanced Features and Options
Jesel Sportsman Steel Rockers are equipped with a .360" wide non-needle valve tip roller and a cup style tool steel adjuster, designed to endure high lift and high spring pressure applications. Optional upgrades include needle bearing nose rollers and ball style lash adjusters, further enhancing their performance. The precise rocker geometry minimizes roller movement on the valve tip, while the premium alloy steel construction and thorough hardening heat treatment, topped with a black oxide coating, ensure years of dependable service and corrosion resistance.

The Ideal Choice for High Pressure Applications
These rockers are specifically designed to excel in extreme conditions, making them ideal for turbocharged, supercharged, nitrous, endurance, and marine engines.

Features & Options

  • Full complement needle bearing assembly operates with minimal lubrication while distributing load evenly over shaft surface.

  • Securely retained .520” diameter Tool Steel Nose Roller operates with less friction and decreased valve guide wear.

  • Precision ground and heat-treated Tool Steel shaft provides years of durable service.

  • Increases clearance for valve cover while also reducing the rocker’s moment of inertia.

  • CNC machined, heat treated H-13 tool steel lash adjusters feature a nitride process for wear protection.

  • Provides a stable and rigid mounting surface for shaft rocker assembly.

  • Bronze and/or hardened steel thrust washers are used to absorb heavy axial loads and prolong the life of the rocker shaft bearings.

  • A .625" wide body with an ultralight slot reduces both weight and moment of inertia.

  • Fully rebuildable to Jesel factory specifications through the Jesel CPR department.

  • Rockers can be ordered in various ratios to suit your specific engine build. Some applications are ratio limited.

  • Has less friction than cup type adjusters. Makes rocker arm stronger by increasing the adjuster thread area and eliminates counter-bore area.

  • Manufactured from ARP 2000 material, these bolts can be torqued to 35 ft/lbs and are recommended for spring pressures exceeding 900 lbs. open.

  • Recommended for use with high lift, high spring pressure applications. Prevents the roller from stalling and skidding across the valve tip. Highly recommended when using .312” or smaller valve stems.

Available Applications

AFR BBC / SBC / SBF
AFR LS1 / LS3
All Pro 11°- 23° SBC
All Pro LS3 / LS7
Brodix 20° - 24° BBC
Brodix 15° - 23° SBC

Brodix SBF
Brodix LS1 / LS3 / LS7
Chrysler W7
Dart 20° - 24° BBC
Dart 13° - 23° SBC

Dart SBF
Dart LS1 / LS3
Edelbrock LS-R
Edelbrock SC1
Edelbrock SBF

Ford D3 Ninja
Ford 20°
Ford A460
Frankenstein LS
GM 24° BBC

GM 15° - 23° SBC
GM LS1 / LS3 / LS7
GM SB2.2
Mast LS3 / LS7
MRH 18° BBC

Profiler BBC
TFS A460
TFS LS1 / LS3
TFS High Port SBF
TFS Twisted Wedge

Service Parts and Hardware

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.

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