Gage Black Venom 1.2 Ratio Roller Rockers GX390 Predator 420 non-Hemi

The Gage Black Venom Roller Rocker Arms are a high-quality component designed to enhance the performance of your engine.

Fits Honda GX390, Predator 420 non-Hemi, and most 13-16 HP Clone engines with non-Hemi type heads.

These are 1.2 to 1 ratio rockers for engines using giant cams like the DynoCams 356 and dual springs,

These rocker arms are made from premium materials, including aircraft-grade aluminum, which ensures their durability and long-lasting performance. With their lightweight design, they help reduce valve train weight and improve engine response, making them an excellent choice for high-performance racing engines.

The roller tip design also reduces friction and wear, ensuring less heat buildup and more efficient operation. Whether you are building a race engine or upgrading your existing engine, the Gage Ultra Light Roller Rocker Arms are an excellent choice.

The GAGE Black Venom rockers are by far the best rockers you can put on your engine. The shaft mount design adds strength, durability and frees up a ton of power by eliminating as much friction and drag as possible. 

• Aluminum, Full Roller Rocker Arms
  • Fits GX340, GX390, Predator 420 non-Hemi, and most 13-16 HP Clones
  • CNC machined from aircraft grade aluminum
  • Needle bearings
  • Hardened roller tips and shafts
  • Dyno tested at 10,500rpm and are proven to provide more horsepower
  • These, as tested, show a 3% increase in maximum torque and HP over standard aluminum rockers.
  *Picture is for reference only. Rocker arms will be engraved to depict the correct respective ratio!
• Proudly manufactured in the USA

Don't be fooled by cheap imitations! These are the real deal and used by racers!

Please do the math.

A .275" lift cam and 1.2 rockers will net .330" of lift at the valve

(lift x ratio = total lift)

We suggest only using chromoly pushrods with these rockers and cut to the proper length to maintain proper valvetrain geometry.