NR Racing Roller Tip Rocker Arms for GX270, GX390, 420 Non-Hemi Predator, and 13/15 Chinese OHV - Pair
1.3 Ratio

• Machined from chrome-moly steel
• Hardened roller tips and shafts
• Dyno-tested to 10,000rpm and proven to increase horsepower
• Uses stock shaft and pivot nut
• Fits under stock valve cover

*Note: Dual springs may cause excessive shaft stretching or breakage.
These rocker arms require shorter pushrods (typically 5.62 for GX270 and 6.44 for GX390).