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COMP Cams

COMP Cams Ultra Pro Magnum Rocker Arms

4.76 out of 5 stars 203 Customer Reviews

Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engine
Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level. The most noticeable advancement centers around their nearly unbreakable investment cast 8650 chromoly body. The arched, web-like design delivers a near
Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level. The most noticeable advancement centers around their nearly unbreakable investment cast 8650 chromoly body. The arched, web-like design delivers a nearly 29 percent increase in strength and rigidity, while reducing the moment of inertia and optimizing the dynamic balance. The resulting rockers maximize lift and valvetrain control at high rpm. The increased retainer and valve spring clearances of the new design enable the use of large-diameter valve springs, retainers, and locks, without clearance or fitment issues. The new black oxide exterior finish offers a distinctive appearance, along with long-term corrosion resistance. The COMP Cams Ultra Pro Magnum rocker arms feature an oversized trunnion and precision-sorted needle bearings designed for use with high-load valve springs. These unique rockers also feature hardened roller tips for reduced friction and elimination of the valve stem "side loading" that causes premature valve guide wear.

Showing In Stock Items. Show All 12 Items.

Results 1 - 10 of 10

COMP Cams Ultra Pro Magnum Rocker Arms 1678-16

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1678-16

COMP Cams Ultra Pro Magnum Rocker Arms 1678-16

Rocker Arms, Ultra Pro Magnum, Full Roller, 1.8 Ratio, Chromoly Steel, Black Oxide, Chevy, Rectangular Port LS, Set of 16

Part Number: CCA-1678-16

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Ultra Pro Magnum Rocker Arms 1677-16

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1677-16

COMP Cams Ultra Pro Magnum Rocker Arms 1677-16

Rocker Arms, Ultra Pro Magnum, Full Roller, 1.8 Ratio, Chromoly Steel, Pedestal Mounting, Chevy, Set of 16

Part Number: CCA-1677-16

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Ultra Pro Magnum Rocker Arms 1678-8

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1678-8

COMP Cams Ultra Pro Magnum Rocker Arms 1678-8

Rocker Arms, Ultra Pro Magnum, Full Roller, 1.8 Ratio, Chromoly Steel, Black Oxide, Chevy, Rectangular Port LS, Set of 8

Part Number: CCA-1678-8

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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COMP Cams Ultra Pro Magnum Rocker Arms 1676-16

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1676-16

COMP Cams Ultra Pro Magnum Rocker Arms 1676-16

Rocker Arms, Ultra Pro Magnum, Full Roller, 1.8 Ratio, Chromoly Steel, 3/8 in. Stud Size, Chevy, Set of 16

Part Number: CCA-1676-16

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Scorpion LS Race Series Rocker Arms SCP1063

Scorpion LS Race Series Rocker Arms SCP1063

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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COMP Cams Ultra Pro Magnum Rocker Arms 1678-1

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1678-1

COMP Cams Ultra Pro Magnum Rocker Arms 1678-1

Rocker Arm, Ultra Pro Magnum, Full Roller, 1.8 Ratio, Chromoly Steel, Black Oxide, Chevy, Rectangular Port LS, Each

Part Number: CCA-1678-1

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1676-8

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1676-8

COMP Cams Ultra Pro Magnum Rocker Arms 1676-8

ROCKER ARMS, GM LS3 1.8 3/8 ULTRA PRO MAG

Part Number: CCA-1676-8

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1677-1

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1677-1

COMP Cams Ultra Pro Magnum Rocker Arms 1677-1

Rocker Arm, Ultra Pro Magnum, Full Roller, 1.8 Ratio, Chromoly Steel, Pedestal Mounting, Chevy, Each

Part Number: CCA-1677-1

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1675-1

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1675-1

COMP Cams Ultra Pro Magnum Rocker Arms 1675-1

Rocker Arms, Fits 3/8 in. Stud, Full Roller, Steel, 1.8 Ratio, Chevy, V8, LS, Each

Part Number: CCA-1675-1

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1676-1

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1676-1

COMP Cams Ultra Pro Magnum Rocker Arms 1676-1

Rocker Arms, Ultra Pro Magnum, Full Roller, Chromoly Steel, Black Oxide, 1.8 Ratio, 3/8 in. Stud Mount, Rectangle Port Heads Only, Chevy, 6.2L, Each

Part Number: CCA-1676-1

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1675-8

Made in the USA COMP Cams Ultra Pro Magnum Rocker Arms 1675-8

COMP Cams Ultra Pro Magnum Rocker Arms 1675-8

ROCKER ARMS, GM LS1 1.8 3/8 ULTRA PRO MAG, SET OF 8

Part Number: CCA-1675-8

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

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