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The latest development in Rocker arm Technology from COMP Cams are Ultra Pro Magnumâ„¢ Rocker Arms built for 1/2″ Studs to increase valve train stiffness and stability. Designed to be used in conjunction with the COMP Cams Hi-Tech 1/2″ Rocker Stud Kit, the latest versions of COMP Cams Ultra Pro Magnum Rockers are built to utilize 1/2″ Studs to stabilize BBC valve trains. Ultra Pro Magnumâ„¢ Roller Rocker Arms feature a modern arched, web-like design to deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. The Rockers also boast precision-sorted needle bearings and hardened Roller tips. And since they now feature the added benefit of accepting 1/2″ Studs, they are a great choice for anyone looking for more stiffness with Stud mount Rockers. These new Ultra Pro Magnumâ„¢ Rocker Arms will provide the ultimate in valve train stability for maximum valve motion both at the track and on the street.

1/2″ Studs provide a stiffer valve train to achieve maximum valve motion in BBC engines
Deliver increased strength and rigidity while reducing the moment of inertia and optimizing dynamic balance

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.7 ratio, these rockers fit Chevrolet 396-454 with a 1/2″ diameter stud.

Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Chevy V8 396-454 c.i.d. – 7/16″ Stud – 1.7 Ratio
Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia.
Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.7 ratio, these rockers fit Chevrolet 396-454 with a 7/16″ diameter stud.

ULTRA Pro Magnumâ„¢ Roller Rocker Arms. The Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnumâ„¢ Rockers, but they also take Stud mount Rocker performance, stability and value to a whole new level. The modern arched, web-like design delivers increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. Applications: Chevrolet Small Block 265-400 c.i.d. V8 3/8″ Studs / 1.52:1 Ratio.

Investment cast 8650 chromemoly body and arched, weblike design deliver increased strength and rigidity while reducing M.O.I.
Unique black oxide exterior finish helps prevent corrosion, thus increasing durability
Increased retainer and valve spring clearances allow use of large diameter springs, retainers and +.050″ locks with o clearance or fitment issues
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips
withstand valve spring pressures up to 850 lbs.
Also Available in A Rocker/Pushrod Kit

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.52 ratio, these rockers fit Chevrolet Small Blocks with a 3/8″ diameter stud.

The Ultra Pro Magnumâ„¢ Roller Rocker Arms for Chevy V8 265-400 c.i.d. (SBC) Applications not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. These Rocker arms feature a 7/16″ Stud diameter and 1.52 ratio. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.52 ratio, these rockers fit Chevrolet Small Blocks with a 7/16″ diameter stud.

The Ultra Pro Magnumâ„¢ Roller Rocker Arms for Chevy V8 265-400 c.i.d. (SBC) Applications not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. These Rocker arms feature a 3/8″ Stud diameter and 1.6 ratio. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, these rockers fit Chevrolet Small Blocks with a 3/8″ diameter stud.

Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Chevy V8 265-400 c.i.d. (SBC) – 1988 and later with Self Aligning Rockers – 3/8″ Stud – 1.6 Ratio
Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, these rockers fit ’88+ Chevrolet Small Blocks with a 3/8″ diameter stud.

The Ultra Pro Magnumâ„¢ Roller Rocker Arms for Chevy V8 265-400 c.i.d. (SBC) Applications not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. These Rocker arms feature a 7/16″ Stud diameter and 1.6 ratio. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, these rockers fit Chevrolet Small Blocks with a 7/16″ diameter stud.

Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Chevy V8 265-400 c.i.d. (SBC) – 1988 and later with Self Aligning Rockers – 3/8″ Stud – 1.52 Ratio
Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.52 ratio, these rockers fit ’88+ Chevrolet Small Blocks with a 3/8″ diameter stud.

Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.Ford V8 Boss 302, 351C, 429-460 – 7/16″ Stud – 1.7 RatioInvestment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.
These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.7 ratio, these rockers fit Ford Boss 302, 351C and 429-460 with a 7/16″ diameter stud.

Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Ford V8 289-302-351W – 3/8″ Stud – 1.6 Ratio
Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, these rockers fit Ford 289-351W with a 3/8″ diameter stud.

Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Ford V8 Engines with Self Aligning Rockers – 3/8″ Stud – 1.6 Ratio
Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, these self-aligning rockers fit Ford V8’s with a 3/8″ diameter stud.

Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.

Ford V8 289-302-351W – 7/16″ Stud – 1.6 Ratio
Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
Lifetime Warranty – So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, these rockers fit Ford 289-351W with a 7/16″ diameter stud.