What material are these rocker arms made from?

These Ultra Pro Magnum XD rocker arms are machined from durable 8650 steel. This material is chosen for its strength and ability to outlast many other rocker arm options.

What is the purpose of the billet pushrod seat insert?

The unique machined billet pushrod seat insert offers exceptional durability. It's designed to handle the forces involved in valve operation and reduce wear in that critical area.

Are these rocker arms compatible with different valve springs?

Yes, these rocker arms are designed to work with most common diameter springs and retainers. This offers flexibility when installing them with your existing or new valve train components.

COMP Cams Ultra Pro Magnum XD Rocker Arms 1.6 Ratio 3/8in St

Name: COMP Cams Rocker FS 1.6 3/8in Ultra Pro
Brand: COMP Cams
Price: 65.22 USD
Availability: InStock

COMP Cams Rocker FS 1.6 3/8in Ultra Pro

$65.22

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams Ultra Pro Magnum XD rocker arms with 1.6 ratio for 3/8" stud Ford engines. Made from durable 8650 steel with a billet pushrod seat insert.

Key Features

Fits a wide range of Ford vehicles including Country Sedan, Country Squire, Custom 500, and Mustang.
Features a 1.6 ratio for improved valve lift.
Constructed from durable 8650 steel for long service life.
Includes a unique machined billet pushrod seat insert for exceptional durability.
Uses precision-sorted needle bearings and hardened roller tips to distribute load and reduce wear.
Fully rebuildable design.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

COMP Cams is well-known for making performance engine components, and their Ultra Pro Magnum XD rocker arms are a solid choice for anyone rebuilding or upgrading their engine. These stud-mount rockers are built from tough 8650 steel, which is known to last longer than many other rocker arms out there. They feature a unique billet pushrod seat insert that adds even more durability where it counts. This particular set has a 1.6 ratio and is designed for use with 3/8-inch studs, making them a good fit for a range of Ford engines like the 289, 302, and 351 Windsor, found in vehicles from the 1960s through the 1990s.

What sets these apart is the attention to detail in their construction. They use precision-sorted needle bearings and hardened roller tips. This setup helps spread the load evenly and reduces wear, meaning these rockers should give you a longer service life. They're also designed to work with most common spring and retainer diameters, and they're fully rebuildable, which is a nice touch for longevity. The XD design itself was developed using advanced computer modeling to optimize strength and stiffness, making them suitable for demanding applications.