STS BB-4 XTRA Series Cylinder Heads
  • 390cc Intake Port Volume
  • Unassembled, Bare Head
  • 100% CNC Ported
  • $1,672.65
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    STS BB-4 XTRA Series Cylinder Head
  • CNC Ported
  • 390cc Rectangle Intake Ports
  • 119cc Combustion Chambers
  • 2.350'' Intake / 1.900'' Exhaust Valve Sizes
  • Bare, 1/pkg.
  • View Details
    $1,672.65
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    STS BB-4 XTRA Series Cylinder Heads
  • 390cc Intake Port Volume
  • 1.550'' Diameter Valve Springs - 550# Open, 240# Closed Spring Pressure
  • 100% CNC Ported
  • $2,074.02
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    STS BB-4 XTRA Series Cylinder Head
  • CNC Ported
  • 390cc Rectangle Intake Ports
  • 115cc Combustion Chambers
  • 2.350'' Intake / 1.900'' Exhaust Valves
  • 1.550'' Dia. Springs - 240# Seat Pressure
  • Titanium Retainers
  • Assembled, 1/pkg.
  • View Details
    $2,074.02
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    $2,074.02
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    STS BB-4 XTRA Series Cylinder Head
  • CNC Ported
  • 390cc Rectangle Intake Ports
  • 119cc Combustion Chambers
  • 2.350'' Intake / 1.900'' Exhaust Valves
  • 1.550'' Dia. Springs - 240# Seat Pressure
  • Titanium Retainers
  • Assembled, 1/pkg.
  • View Details
    $2,074.02
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    STS BB-4 XTRA Series Cylinder Heads
  • 390cc Intake Port Volume
  • 1.625'' Diameter Valve Springs - 745# Open, 255# Closed Spring Pressure
  • 100% CNC Ported
  • $2,152.17
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    STS BB-4 XTRA Series Cylinder Head
  • CNC Ported
  • 390cc Rectangle Intake Ports
  • 115cc Combustion Chambers
  • 2.350'' Intake / 1.900'' Exhaust Valves
  • 1.625'' Dia. Springs - 255# Seat Pressure
  • Titanium Retainers
  • Assembled, 1/pkg.
  • View Details
    $2,152.17
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    $2,152.17
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    STS BB-4 XTRA Series Cylinder Head
  • CNC Ported
  • 390cc Rectangle Intake Ports
  • 119cc Combustion Chambers
  • 2.350'' Intake / 1.900'' Exhaust Valves
  • 1.625'' Dia. Springs - 255# Seat Pressure
  • Titanium Retainers
  • Assembled, 1/pkg.
  • View Details
    $2,152.17
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    STS BB-4 XTRA Series Cylinder Heads
  • 390cc Intake Port Volume
  • 1.645'' Diameter Valve Springs - 945# Open, 330# Closed Spring Pressure
  • 100% CNC Ported
  • $2,275.47
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    STS BB-4 XTRA Series Cylinder Head
  • CNC Ported
  • 390cc Rectangle Intake Ports
  • 115cc Combustion Chambers
  • 2.350'' Intake / 1.900'' Exhaust Valves
  • 1.645'' Dia. Springs - 330# Seat Pressure
  • Titanium Retainers
  • Assembled, 1/pkg.
  • View Details
    $2,275.47
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    $2,275.47
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    STS BB-4 XTRA Series Cylinder Head
  • CNC Ported
  • 390cc Rectangle Intake Ports
  • 119cc Combustion Chambers
  • 2.350'' Intake / 1.900'' Exhaust Valves
  • 1.645'' Dia. Springs - 330# Seat Pressure
  • Titanium Retainers
  • Assembled, 1/pkg.
  • View Details
    $2,275.47
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    BB-5 Series Cylinder Heads
  • 387cc Intake Port Volume
  • Unassembled, Bare Head
  • $1,207.59
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    BB-5 Series Cylinder Head
  • 387cc Rectangle Intake Ports
  • 119cc Combustion Chambers
  • 2.350'' Intake / 1.880'' Exhaust Valve Sizes
  • Bare, 1/pkg.
  • View Details
    $1,207.59
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    BB-5 Series Cylinder Heads
  • 387cc Intake Port Volume
  • 1.625'' Diameter Valve Springs - 745# Open, 255# Closed Spring Pressure
  • $1,672.46
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    BB-5 Series Cylinder Head
  • 387cc Rectangle Intake Ports
  • 119cc Combustion Chambers
  • 2.350'' Intake / 1.880'' Exhaust Valves
  • 1.625'' Dia. Springs - 255# Seat Pressure
  • Titanium Retainers
  • Assembled, 1/pkg.
  • View Details
    $1,672.46
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee

    BB-5 Series Cylinder Heads
  • 387cc Intake Port Volume
  • 1.645'' Diameter Valve Springs - 945# Open, 330# Closed Spring Pressure
  • $1,779.70
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee
    BB-5 Series Cylinder Head
  • 387cc Rectangle Intake Ports
  • 119cc Combustion Chambers
  • 2.350'' Intake / 1.880'' Exhaust Valves
  • 1.645'' Dia. Springs - 330# Seat Pressure
  • Titanium Retainers
  • Assembled, 1/pkg.
  • View Details
    $1,779.70
    Estimated to ship directly from the manufacturer on 04/23/21
    FREE Shipping
    Lowest Price Guarantee