Hi Lift Roller Rockers 1.5 Ratio – WP25035
1.5:1 Hi Lift Roller Rockers. A 1.5:1 billet roller tip rocker assembly is an upgraded version of the standard A series rocker gear. The ratio (1.5:1) determines how much valve lift you get relative to cam lift. This ratio is higher than stock, making it a noticeable performance enhancement. Benefits include:
- Reduced friction at the valve tip thanks to the roller wheel.
- More consistent valve lift across cylinders, improving breathing efficiency.
- Less side loading on valve stems, which helps extend guide life.
- Smoother, quieter valvetrain operation due to improved geometry and materials.
- A significant increase in vale lift
- Direct bolt on upgrade for most A series heads after checking for coil binding
Made in the UK and a massive improvement over the original Motaclan part CAM289











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