Ferrea aluminium-magnesium 2nd Gen roller rocker arm kit (K20C 2015+ FK2/FK8/FL5 engines)

The New Acura/ Honda K20 2nd Gen Roller Rocker is finally here. This Roller Rocker will handle over .650 lift @ 11,000 RPM. We optimized the fulcrum mass weight to 4 grams lighter than the 1st Gen Roller Rocker. We added additional strength towards the shaft area and reduced valve spring harmonics by 8%. If your looking to build the absolute best high lift Honda engine this Ferrea Roller Rocker will give you that extra edge against the competition.


The Ferrea new and optimized Special "Aluminum-Magnesium Roller Rocker System" was designed and developed by Ferrea to replace the factory "Steel Rocker Arm System" and eliminate the V-TEC Function. Factors such as weight, mass moment of inertia, deflection, and cycle durability are taken into account throughout the design and testing process.

- Premium Material: We use special high quality 70 Series Aerospace Aluminum-Magnesium
- Alloy, heat-treated to provide superior strength. Manufacturing: Fully CNC machined, profiled for weight reduction, (OEM unit weighs 110% more) which improves moment of inertia, and increases the RPM range of Valvetrain.
- Roller Wheel: The Roller Needle Bearing prevents roller from skidding across the camshaft surface, unlike the (OEM) stock rocker pad, thus reducing friction dramatically.
- Tool Steel Pin: The Tool Steel Roller Pin is compressed between the rocker to stabilize the rocker motion throughout the entire RPM range.
- Installation: Ferrea's Roller Rocker System comes with all hardware and requires no head modifications for installation.


-References: Aluminum-Magnesium CNC machined.
-Stock exhaust rocker assembly mass: 270 grams.
-Stock intake rocker assembly mass: 170 grams.
-Ferrea rocker assembly mass: 162 grams (40 % less mass than factory exhaust rockers).
-Stock exhaust rocker fulcrum mass: 122 grams.
-Stock intake rocker fulcum mass: 87 grams.
-Ferrea fulcrum mass: 80 grams.
-Can be used with stock or any aftermarket camshafts.
-Uses center lobe only.
-To work properly, you must disconnect the VTEC function and remove the lost-motion assembly components.
-Note: Ferrea Valve Spring Kit # KT4038 must use Ferrea Rockers RR1006 due to rocker arm and retainer clearances.

This is a full kit of 8 rocker arms for one engine.