COMP Cams Ultra Pro Magnum Rocker Arms

4.76 out of 5 stars 200 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 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.

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COMP Cams Ultra Pro Magnum Rocker Arms 1620-16

COMP Cams Ultra Pro Magnum Rocker Arms 1620-16

Rocker Arm; Ultra Pro Magnum; Rocker Arm; Stud 7/16 in. Ratio 1.7 in.; Chevy Big Block 396-454 cid; 16 pc.

Part Number: CCA-1620-16

4.95 out of 5 stars ( 37 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1632-16

Rocker Arms, Ultra Pro Magnum, 7/16 in. Stud Mount, Chromoly Steel, 1.6 Ratio, Ford, Small Block, Set of 16

Part Number: CCA-1632-16

4.92 out of 5 stars ( 24 )

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COMP Cams Ultra Pro Magnum Rocker Arms 1605-16

Rocker Arm, Ultra Pro Magnum, Rocker Arm, Stud 7/16 in., Ratio 1.6 in., Chevy, Small Block, Set of 16

Part Number: CCA-1605-16

4.82 out of 5 stars ( 11 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1631-16

Rocker Arms, Stud Mount, Full Roller, Steel, 1.6 Ratio, Fits 3/8 in. Stud, Ford, Small Block, Set of 16

Part Number: CCA-1631-16

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1604-16

Rocker Arms, Stud Mount, Full Roller, Steel, 1.52 Ratio, Fits 7/16 in. Stud, Chevy, Small Block, Set of 16

Part Number: CCA-1604-16

4.83 out of 5 stars ( 12 )

Estimated Ship Date: Today

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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

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1601-16

Rocker Arm; Ultra Pro Magnum; Rocker Arm; Stud 3/8 in. Ratio 1.52 in.; Chevy Small Block 265-400 cid; 16 pc.

Part Number: CCA-1601-16

4.84 out of 5 stars ( 25 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1602-16

Rocker Arms, Stud Mount, Full Roller, Steel, 1.6 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: CCA-1602-16

4.87 out of 5 stars ( 15 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1617-16

Rocker Arms, Stud Mount, Full Roller, Steel, 1.52 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: CCA-1617-16

3.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1630-16

Rocker Arms, Stud Mount, Full Roller, Steel, 1.7 Ratio, Fits 7/16 in. Stud, Ford, BBF, Cleve, Boss, Set of 16

Part Number: CCA-1630-16

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1618-16

Rocker Arms, Stud Mount, Full Roller, Steel, 1.6 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: CCA-1618-16

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1604-8

Rocker Arms, Stud Mount, Full Roller, Steel, 1.52 Ratio, Fits 7/16 in. Stud, Chevy, Small Block, Set of 8

Part Number: CCA-1604-8

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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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: Today

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COMP Cams Ultra Pro Magnum Rocker Arms 1617-12

Rocker Arms, Stud Mount, Full Roller, Steel, 1.52 Ratio, Fits 3/8 in. Stud, Chevy V6, Set of 12

Part Number: CCA-1617-12

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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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: Nov 10, 2025 if ordered today

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Estimated Ship Date: Nov 10, 2025 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1608-8

Rocker Arms, Stud Mount, Full Roller, Steel, 1.52 Ratio, Fits 7/16 in. Stud, Chevy, Small Block, Set of 8

Part Number: CCA-1608-8

Not Yet Reviewed

Estimated Ship Date: Nov 10, 2025 if ordered today

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Estimated Ship Date: Nov 10, 2025 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1629-16

Rocker Arms, Stud Mount, Full Roller, Steel, 1.7 Ratio, Fits 3/8 in. Stud, Chevy, Big Block, Set of 16

Part Number: CCA-1629-16

Not Yet Reviewed

Estimated Ship Date: Today

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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: Nov 10, 2025 if ordered today

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Estimated Ship Date: Nov 10, 2025 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1605-12

Rocker Arms, Stud Mount, Full Roller, Steel, 1.6 Ratio, Fits 7/16 in. Stud, Chevy V6, Set of 12

Part Number: CCA-1605-12

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 11, 2025 if ordered today

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Estimated Ship Date: Nov 11, 2025 if ordered today

COMP Cams Ultra Pro Magnum Rocker Arms 1619-12

Rocker Arm, 3/8 in.Stud Mount, Full Roller, Chromoly Steel, 1.7 Ratio, Ford, 3.8L, Set of 12

Part Number: CCA-1619-12

Not Yet Reviewed

Estimated Ship Date: Nov 11, 2025 if ordered today

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Estimated Ship Date: Nov 11, 2025 if ordered today

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