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EC 1.2 Billet Roller Rev Rockers with Bearings for Big Block GX390/Clone
EC 1.2 Billet Roller Rev Rockers with Needle Bearings for Big Block Clone
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EC 1.2 Billet Roller Rev Rockers with Bearings for Big Block GX390/Clone

Part Number: 1516RR
Online Price: $259.99
Phone Order Price:$289.99
You Save:$30.00(10%)
EC 1.2 Billet Aluminum Rev Rockers for GX390, Predator 420 & Wildcat 460
Questions about this item? Be the first to ask here.
Availability: Out of Stock.

Description

EC 1.2 Billet Aluminum Rev Rockers for GX390, Predator 420, Wildcat 460 & Big Block Clones


Upgrade your small engine's performance with the EC 1.2 Billet Aluminum Rev Rockers—engineered for non-hemi, wedge-head engines like the Honda GX390, Predator 420, Wildcat 460, and other big block clones. These rockers deliver improved durability, smoother operation, and enhanced valve geometry for high-performance, high-RPM use.


Key Features of EC Rev Rockers:

1.2:1 Ratio for Better Valve Lift & Duration

The 1.2:1 ratio of these rocker arms increases valve lift, enhancing valve acceleration and duration—especially in cam setups with lift greater than .150". This improvement delivers better airflow, increased combustion efficiency, and higher RPM performance. However, be mindful that increased valve lift may require higher spring pressure and adjusted cam specs for optimal results.


Needle Bearings for Reduced Friction & Improved Durability

Designed with precision needle bearings at the main shaft pivot, these rev rockers drastically reduce friction and prevent premature wear. This upgrade was in direct response to customer feedback, addressing issues with traditional bearingless rockers that seize without proper lubrication. Needle bearings offer smoother movement and increased reliability during high-RPM runs. As always, we recommend using Maxima Racing Oil Assembly Lube during installation for optimal lubrication and longevity.


Larger Roller Tip for Added Clearance & Enhanced Performance

The hardened roller tip features a larger diameter, providing additional rocker-to-retainer clearance. While most small engine setups don’t require lash caps, this larger roller tip design is ideal for high-lift camshafts and aggressive engine builds—ensuring the highest level of competition performance. The roller tips also help to minimize friction on the valve tips, leading to less wear and tear on your valve train components.


Strong Yet Lightweight Design for Stability at High RPMs

Crafted from aircraft-grade billet aluminum, the rocker arms are both strong and lightweight. This design helps to reduce valve train harmonics and maintain stability at high RPMs, especially with aggressive cam setups. The increased material on the rocker arm tip enhances rigidity and strength while keeping weight at a minimum.


Easy-to-Install Shaft-Mounted System for Increased Precision

These rockers are mounted on a shaft or trunnion system that secures them above the valve and pushrods, ensuring stable operation and precise valve movement. This helps reduce distortion and deflection, improving overall valve control and camshaft profile accuracy for better engine performance.


Titanium Lash Adjuster Nuts for Added Strength

The EC Rev Rockers come equipped with Titanium Lash Adjuster Nuts, adding to the overall strength and durabilityof the rocker arm assembly. These nuts ensure proper rocker arm adjustment and contribute to a reliable, long-lasting valve train system.


Why Choose EC Rev Rockers?

The EC 1.2 Billet Aluminum Rev Rockers offer unmatched performance and durability for small engine builders at an affordable price. With needle bearings, roller tips, and aircraft-grade aluminum, these rockers deliver a high-performance valve train solution without breaking the bank. Perfect for race karts, mini bikes, or competition engines, the EC Rev Rockers are a must-have upgrade for your GX390, Predator 420, or Wildcat 460 engine.


Technical Specifications:

  • Material: Aircraft-grade billet aluminum
  • Rocker Ratio: 1.2:1
  • Needle Bearings: Yes, at the main shaft pivot
  • Roller Tip: Hardened, oversized for added clearance
  • Main Shaft: Includes snap rings and brass washers for secure mounting
  • Titanium Lash Adjuster Nuts: Included
  • Compatibility: Non-hemi big block clones, including Honda GX390, Predator 420, and Wildcat 460


Performance-Boosting Features:

  • Needle bearings for low friction and better durability
  • Larger roller tips for lash cap compatibility and enhanced performance
  • Titanium nuts for secure adjustments
  • Billet aluminum construction for a lightweight, strong design
  • Minimal price increase for enhanced performance features

FAQ

What engines are compatible with the EC 1.2 Billet Aluminum Rev Rockers?

These rev rockers are designed for non-hemi wedge-head engines like the Honda GX390, Predator 420, Wildcat 460, and other big block clones. They're perfect for engines with non-hemi configurations that require enhanced valve train geometry.


What is the advantage of the 1.2:1 rocker ratio?

The 1.2:1 ratio increases valve lift, which improves airflow, combustion efficiency, and high RPM performance. This means better performance at higher RPMs, especially with aggressive camshaft setups. For lifts greater than .150", the increased valve acceleration and duration will significantly boost engine output.


Why are needle bearings used in these rockers?

Needle bearings are included to reduce friction and prevent premature wear at the rocker pivot point. This is a significant upgrade from traditional bushing-style rockers, which can seize or wear out quickly without proper lubrication. Needle bearings ensure smoother operation and increased durability under high-rpm conditions. Proper lubrication, such as Maxima Racing Oil Assembly Lube, is still required during installation.


Do I need lash caps with these rocker arms?

Most applications do not require lash caps, but lash cap compatibility is one of the key features of these rockers. The larger roller tip helps to provide additional clearance, which is valuable when using titanium valves or high-lift cams. Lash caps are typically used with titanium valves to prevent galling, but stainless steel valves don't require them.


What makes these rev rockers different from others on the market?

The EC 1.2 Billet Aluminum Rev Rockers are one of the only rockers at this price point that feature needle bearingsfor reduced friction. The larger roller tip and billet aluminum construction offer a combination of strength and lightweight design, making these rockers ideal for high-performance small engine builds without breaking the bank.


Can I use these rockers for racing or high-performance engines?

Yes! These rev rockers are designed to handle high RPMs and aggressive camshaft setups, making them perfect for racing engines, mini bikes, race karts, and other competition-level builds. The enhanced rocker geometry and needle bearings ensure reliable operation during high-stress conditions.


Do I need to increase spring pressure when using these rockers?

If you're running a high-lift camshaft or using oversized valves, you may need to increase spring pressure. These rockers are designed to enhance valve acceleration and duration, so a higher spring pressure may be necessary to support the increased lift and performance. Always consult your cam card for recommended spring pressure.


What tools do I need for installation?

Installing the EC 1.2 Billet Aluminum Rev Rockers is straightforward, but it’s essential to use the proper tools to ensure correct installation. You'll need standard engine assembly tools like a torque wrench and pushrod measuring tools. Additionally, Maxima Racing Oil Assembly Lube is recommended to properly lubricate the needle bearings during installation.


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