KB Hypereutectic Pistons SBM Domed Piston Set 3.940 Bore +6cc — Fits Small Block Mopar

SKU: BJDT_KB399.030
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About KB Hypereutectic Pistons KB Hypereutectic Pistons engineers high-quality automotive ...Read More

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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 KB Hypereutectic Pistons

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

High-Performance KB Hypereutectic Pistons for Small Block Mopar

Unlock the full potential of your Small Block Mopar engine with this premium set of KB Hypereutectic domed pistons. Engineered for enthusiasts who demand reliability and power, these pistons feature a 3.940-inch bore and a +6cc dome volume, providing the ideal compression ratio for street and strip applications. The hypereutectic alloy construction offers superior thermal expansion control compared to standard cast pistons, ensuring a tighter ring seal and increased longevity under high-load conditions.

Key Technical Specifications

  • Application: Small Block Mopar (SBM)
  • Bore Size: 3.940 inches
  • Dome Volume: +6.00 cc
  • Ring Grooves: 5/64 x 5/64 x 3/16 inch
  • Material: High-strength Hypereutectic Alloy
  • Quantity: Complete set of 8 pistons

These pistons are designed to handle the rigors of performance driving while maintaining excellent heat dissipation. The precision-machined ring grooves ensure optimal oil control and compression, minimizing blow-by and maximizing horsepower output. Whether you are performing a full engine rebuild or a performance upgrade, these KB pistons provide the durability and consistency required for your build. Don't settle for mediocre components when building your engine; trust the engineering excellence found at GGCRACING to get your Mopar back on the road with improved throttle response and reliable power delivery.

Product Details

Product Description
Part Numbers
Sizing & Fit

About KB Hypereutectic Pistons

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

High-Performance KB Hypereutectic Pistons for Small Block Mopar

Unlock the full potential of your Small Block Mopar engine with this premium set of KB Hypereutectic domed pistons. Engineered for enthusiasts who demand reliability and power, these pistons feature a 3.940-inch bore and a +6cc dome volume, providing the ideal compression ratio for street and strip applications. The hypereutectic alloy construction offers superior thermal expansion control compared to standard cast pistons, ensuring a tighter ring seal and increased longevity under high-load conditions.

Key Technical Specifications

  • Application: Small Block Mopar (SBM)
  • Bore Size: 3.940 inches
  • Dome Volume: +6.00 cc
  • Ring Grooves: 5/64 x 5/64 x 3/16 inch
  • Material: High-strength Hypereutectic Alloy
  • Quantity: Complete set of 8 pistons

These pistons are designed to handle the rigors of performance driving while maintaining excellent heat dissipation. The precision-machined ring grooves ensure optimal oil control and compression, minimizing blow-by and maximizing horsepower output. Whether you are performing a full engine rebuild or a performance upgrade, these KB pistons provide the durability and consistency required for your build. Don't settle for mediocre components when building your engine; trust the engineering excellence found at GGCRACING to get your Mopar back on the road with improved throttle response and reliable power delivery.

Product Details

Product Description

About KB Hypereutectic Pistons

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

High-Performance KB Hypereutectic Pistons for Small Block Mopar

Unlock the full potential of your Small Block Mopar engine with this premium set of KB Hypereutectic domed pistons. Engineered for enthusiasts who demand reliability and power, these pistons feature a 3.940-inch bore and a +6cc dome volume, providing the ideal compression ratio for street and strip applications. The hypereutectic alloy construction offers superior thermal expansion control compared to standard cast pistons, ensuring a tighter ring seal and increased longevity under high-load conditions.

Key Technical Specifications

  • Application: Small Block Mopar (SBM)
  • Bore Size: 3.940 inches
  • Dome Volume: +6.00 cc
  • Ring Grooves: 5/64 x 5/64 x 3/16 inch
  • Material: High-strength Hypereutectic Alloy
  • Quantity: Complete set of 8 pistons

These pistons are designed to handle the rigors of performance driving while maintaining excellent heat dissipation. The precision-machined ring grooves ensure optimal oil control and compression, minimizing blow-by and maximizing horsepower output. Whether you are performing a full engine rebuild or a performance upgrade, these KB pistons provide the durability and consistency required for your build. Don't settle for mediocre components when building your engine; trust the engineering excellence found at GGCRACING to get your Mopar back on the road with improved throttle response and reliable power delivery.

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