1. Rocker Arms & Parts Engines Components For Sale
  2. sku: 12867852308948761
  3. SPEEDMASTER 1-261-021

SPEEDMASTER 1-261-021 Shaft Dna Roller Rocker Arms Set 1.76

fits model: 390, 427, 428. make: Ford.

1-261-021 Speedmaster Ford Fe 390 427 428 Shaft 1.76 Ratio Dna Aluminum Roller Rocker Arms Set

( Brand: Speedmaster ), ( Manufacturer Part Number: 1-261-021 ), ( Type: Rocker Arm ), ( Manufacturer Warranty: 1 Year ), ( Material: Aluminum ), ( Finish: Anodized )

Review SPEEDMASTER Ford Fe Shaft 1.76 Ratio Dna Aluminum Roller Rocker Arms Set fits 390 427 428

Introducing the Speedmaster 1-261-021 Ford FE 390 427 428 Shaft 1.76 DNA Roller Rocker Arm Set, a high-performance upgrade for your Ford engine. This roller rocker arm set is meticulously designed to provide superior valvetrain control and efficiency, ultimately enhancing the power output and overall performance of your engine.

The Speedmaster DNA roller rocker arms are engineered with a precision-machined, billet steel construction, ensuring unparalleled strength and durability. Each arm is finished with a polished and anodized surface, not only adding to the aesthetic appeal but also providing enhanced corrosion resistance.

These roller rockers utilize DNA technology, which is a roller design featuring a unique, self-lubricating, and maintenance-free roller tip. This design significantly reduces friction and wear, allowing for quieter operation and longer service life compared to traditional flat-tappet rocker arms.

The shaft diameter of the Speedmaster 1-261-021 roller rocker arm set is 1.76 inches, making it a direct fit for Ford FE 390, 427, and 428 engines. The set includes four roller rocker arms, two intake and two exhaust, as well as the necessary hardware for installation.

By upgrading your engine with the Speedmaster 1-261-021 Ford FE 390 427 428 Shaft 1.76 DNA Roller Rocker Arm Set, you can expect improved power delivery, smoother idle, and enhanced responsiveness. This roller rocker arm set is an excellent choice for enthusiasts seeking to optimize the performance of their Ford engine for street use or competitive racing applications.

Pros and Cons of Buying a Speedmaster 1-261-021 Ford FE 390, 427, 428 Shaft 1.76 DNA Roller Rocker Arm Set

Introduction:

The Speedmaster 1-261-021 Ford FE 390, 427, 428 Shaft 1.76 DNA Roller Rocker Arm Set is a popular upgrade for Ford engines. This set is known for its high-performance roller rocker arms, which can provide better valvetrain efficiency and improved power output. In this article, we will discuss the pros and cons of buying this roller rocker arm set for your Ford engine.

Pros:

1. Enhanced Performance: The DNA roller rocker arms are designed to reduce friction and provide better valve control, leading to improved engine performance.

2. Durability: These roller rocker arms are made from high-quality materials, ensuring long-lasting durability and reliability.

3. Compatibility: This set is compatible with various Ford engines, including the 390, 427, and 428 engines, making it a versatile option for Ford enthusiasts.

4. Easy Installation: The roller rocker arms are relatively easy to install, making it a popular choice for DIY enthusiasts.

Cons:

1. Expensive: The Speedmaster 1-261-021 roller rocker arm set is more expensive than stock arm sets, which can be a deterrent for some buyers.

2. Requires Additional Parts: Installing this set may require the purchase of additional parts, such as pushrods and lifters, increasing the overall cost.

3. Clearance Issues: Some users have reported clearance issues with the roller rocker arms, which can lead to contact with the valve covers or other components.

4. Noise: Some buyers have reported increased engine noise after installing the roller rocker arms, which can be a concern for those seeking a quieter ride.

Conclusion:

The Speedmaster 1-261-021 Ford FE 390, 427, 428 Shaft 1.76 DNA Roller Rocker Arm Set offers several advantages, including enhanced performance, durability, and compatibility. However, it also comes with some drawbacks, such as cost, the need for additional parts, potential clearance issues, and increased noise.

Recommendation:

If you are a serious Ford enthusiast seeking improved engine performance and are willing to invest in a high-quality upgrade, the Speedmaster 1-261-021 roller rocker arm set could be an excellent choice for you. However, be prepared for the additional cost and potential challenges during installation. If you are on a budget or are not particularly concerned with maximizing engine performance, a stock arm set may be a more suitable option.

Details:

Specs Brand: Speedmaster Part Number: 1-261-021 Type: Rocker Arm Product Line: Shaft Mount Mounting Style: Ratio: 1.76 Full roller Shims Included: Yes Self-Aligning: Body Standard Material: Aluminum Finish: Black anodized Quantity: Sold as a kit. Finally, they're black anodized; you'll want to leave your valve covers off. Speedmaster Aluminum Shaft-Mount Rockers can withstand valve spring loads up to 700Ibs, the extruded body has a tensile strength of over 60,000 PSI. Crafted from certified aircraft-quality, heat-treated aluminum, they're matched to massive, precision-ground grunions for superior durability, and optimized rocker arm geometry evenly distributes the load maximum strength.

DNA rocker arms also utilize oversized needle roller bearings for better load distribution and longer service life.

specifications rockeareng:

  • for models: 390, 427, 428
  • for makes: Ford
  • brand: Speedmaster
  • mpn: 1-261-021
  • type: Rocker Arm
  • manufacturer warranty: 1 Year
  • material: Aluminum
  • finish: Anodized

offer rockeareng:

  • availability: In Stock
  • options: Ship-to-home
  • quantity: 4
  • sold: 0
  • started: October 10, 2025

returns rockeareng:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

seller rockeareng:

  • rating: 99.4%
  • # reviews: 1410
  • city: Rialto, California

payments rockeareng:

  • other
  • wallet: Google-pay
  • credit card: Visa

general rockeareng:

  • Engines Engine Parts > Valvetrain Components > Rocker Arms Parts
  • condition: New

shipping rockeareng:

  • type: Fixed
  • class: Standard
  • transit: 6-12 Days
  • carrier: FedEx
  • cost: $0.00
  • service: FedEx Ground / FedEx Home Delivery
for models: 390, 427, 428, for makes: ford, type: rocker arm, manufacturer warranty: 1 year, finish: anodized,
category: auto parts > engines engine parts > valvetrain components > rocker arms parts, material: aluminum, sku: 12867852308948761,
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