PRW Fulcrum Upgrade Kit Silicon Bronze Bushing — Fits GM LS-Series Engines

SKU: FMJX_1213642
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About PRW

PRW engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full PRW lineup with fast shipping and expert fitment support — order with confidence.

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Upgrade to Silicon Bronze Performance

The PRW Fulcrum Upgrade Kit for GM LS engines represents a significant advancement over factory needle-bearing designs. By utilizing high-quality silicon bronze bushings, this kit offers superior load-bearing capabilities and wear resistance, making it an ideal choice for high-lift camshafts and high-pressure valve springs. This kit is engineered to provide a smoother, more reliable rocker arm operation for your GM LS powerplant.

Advantages of Silicon Bronze Bushings

  • Enhanced Durability: Silicon bronze is highly resistant to wear and heat, outperforming standard needle bearings.
  • Load Distribution: Provides a larger surface area for better load distribution under extreme valve spring pressures.
  • Complete Kit: Includes 16 sets of bushings, circlips, and fasteners for a full engine upgrade.
  • Reduced Friction: Promotes smoother rocker movement, contributing to overall valvetrain efficiency.

When upgrading your valvetrain, the fulcrum is a critical point of contact that determines the reliability of your entire setup. By switching to a bushing-style design, you eliminate the risk of needle bearing failure, a common point of contention in high-performance LS builds. This kit is designed for those who refuse to compromise on engine longevity and performance. Whether you are building a street-strip beast or a dedicated track car, this upgrade provides the stability your valvetrain requires. Experience the difference in quality and performance at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About PRW

PRW engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full PRW lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Upgrade to Silicon Bronze Performance

The PRW Fulcrum Upgrade Kit for GM LS engines represents a significant advancement over factory needle-bearing designs. By utilizing high-quality silicon bronze bushings, this kit offers superior load-bearing capabilities and wear resistance, making it an ideal choice for high-lift camshafts and high-pressure valve springs. This kit is engineered to provide a smoother, more reliable rocker arm operation for your GM LS powerplant.

Advantages of Silicon Bronze Bushings

  • Enhanced Durability: Silicon bronze is highly resistant to wear and heat, outperforming standard needle bearings.
  • Load Distribution: Provides a larger surface area for better load distribution under extreme valve spring pressures.
  • Complete Kit: Includes 16 sets of bushings, circlips, and fasteners for a full engine upgrade.
  • Reduced Friction: Promotes smoother rocker movement, contributing to overall valvetrain efficiency.

When upgrading your valvetrain, the fulcrum is a critical point of contact that determines the reliability of your entire setup. By switching to a bushing-style design, you eliminate the risk of needle bearing failure, a common point of contention in high-performance LS builds. This kit is designed for those who refuse to compromise on engine longevity and performance. Whether you are building a street-strip beast or a dedicated track car, this upgrade provides the stability your valvetrain requires. Experience the difference in quality and performance at GGCRACING.

Product Details

Product Description

About PRW

PRW engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full PRW lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Upgrade to Silicon Bronze Performance

The PRW Fulcrum Upgrade Kit for GM LS engines represents a significant advancement over factory needle-bearing designs. By utilizing high-quality silicon bronze bushings, this kit offers superior load-bearing capabilities and wear resistance, making it an ideal choice for high-lift camshafts and high-pressure valve springs. This kit is engineered to provide a smoother, more reliable rocker arm operation for your GM LS powerplant.

Advantages of Silicon Bronze Bushings

  • Enhanced Durability: Silicon bronze is highly resistant to wear and heat, outperforming standard needle bearings.
  • Load Distribution: Provides a larger surface area for better load distribution under extreme valve spring pressures.
  • Complete Kit: Includes 16 sets of bushings, circlips, and fasteners for a full engine upgrade.
  • Reduced Friction: Promotes smoother rocker movement, contributing to overall valvetrain efficiency.

When upgrading your valvetrain, the fulcrum is a critical point of contact that determines the reliability of your entire setup. By switching to a bushing-style design, you eliminate the risk of needle bearing failure, a common point of contention in high-performance LS builds. This kit is designed for those who refuse to compromise on engine longevity and performance. Whether you are building a street-strip beast or a dedicated track car, this upgrade provides the stability your valvetrain requires. Experience the difference in quality and performance at GGCRACING.

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