Ultra ARC Aluminum Narrow Body - 3/8 Polylock. The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature an Arced, Recessed, Contoured design delivers an optimal strength-to-weight ratio. Backed by a Lifetime Warranty—buy them once and use them forever. Engineered for applications running up to 700 lbs of open spring pressure.
- ClearanceItem:N
- Engine Components>Rocker Arms
- EPA:N/A
- LTL:N
- MPN:4633-1
- Non-CARB:N
- Prop65:Y
- SpecialOrder:Y