4P Purple K-Series Ferrea Roller Rocker Arms Stroker Kit 90mm Bore is 15:1

90mm Bore is 15:1

but with Penske Racing Shocks you can rest assured that we will always provide you with an "Assurance of Quality" for your shocks

and assembled with Ferrea Competition Plus valves and Ferrea PAC HD valve springs

please send your buckets and camshafts so that we can set lash

4P Purple K-Series Ferrea Roller Rocker Arms Stroker Kit 90mm Bore is 15:1Ferrea Roller Rocker arms not only reduce friction and valvetrain weight, they allow you to run a more aggressive camshafts. These rockers are 50% less mass than a an OEM steel Honda rocker arm. These rockers eliminate VTEC and allow you to run an aggressive "VTEC Killer" camshaft, and you also can run a 3 lobe traditional camshaft, but it will only use the center VTEC cam lobe. The weight savings will show up in increased horsepower at high rpm and