ST 5.0 Series Cylinder Heads
  • 171cc Intake Port Volume
  • Unassembled, Bare Head
  • $1,121.78
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 Series Cylinder Head
  • 171cc Intake Ports
  • 60cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Valve Sizes
  • Bare, 2/pkg.
  • View Details
    $1,121.78
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    ST 5.0 Series Cylinder Heads
  • 171cc Intake Port Volume
  • 1.470'' Diameter Valve Springs - 325# Open, 125# Closed Spring Pressure
  • $1,409.60
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 Series Cylinder Head
  • 171cc Intake Ports
  • 55cc Combustion Chambers
  • 1.940'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Steel Retainers
  • Assembled, 2/pkg.
  • View Details
    $1,409.60
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    $1,339.04
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 Series Cylinder Head
  • 171cc Intake Ports
  • 60cc Combustion Chambers
  • 1.940'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Steel Retainers
  • Assembled, 2/pkg.
  • View Details
    $1,339.04
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    $1,337.67
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 Series Cylinder Head
  • 171cc Intake Ports
  • 55cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Steel Retainers
  • Assembled, 2/pkg.
  • View Details
    $1,337.67
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    $1,339.04
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 Series Cylinder Head
  • 171cc Intake Ports
  • 60cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Steel Retainers
  • Assembled, 2/pkg.
  • View Details
    $1,339.04
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    ST 5.0 R Series Cylinder Heads
  • 171cc Intake Port Volume
  • Unassembled, Bare Head
  • $1,121.78
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 R Series Cylinder Head
  • 171cc Intake Ports
  • 60cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Valve Sizes
  • Bare, 2/pkg.
  • View Details
    $1,121.78
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    ST 5.0 R Series Cylinder Heads
  • 171cc Intake Port Volume
  • 1.470'' Diameter Valve Springs - 325# Open, 125# Closed Spring Pressure
  • $1,409.60
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 R Series Cylinder Head
  • 171cc Intake Ports
  • 55cc Combustion Chambers
  • 1.940'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Steel Retainers
  • Assembled, 2/pkg.
  • View Details
    $1,409.60
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    $1,339.04
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 R Series Cylinder Head
  • 171cc Intake Ports
  • 60cc Combustion Chambers
  • 1.940'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Steel Retainers
  • Assembled, 2/pkg.
  • View Details
    $1,339.04
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    $1,409.60
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 R Series Cylinder Head
  • 171cc Intake Ports
  • 55cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Steel Retainers
  • Assembled, 2/pkg.
  • View Details
    $1,409.60
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    $1,339.04
    Estimated to ship directly from the manufacturer on 07/15/21
    FREE Shipping
    Lowest Price Guarantee
    ST 5.0 R Series Cylinder Head
  • 171cc Intake Ports
  • 60cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Steel Retainers
  • Assembled, 2/pkg.
  • View Details
    $1,339.04
    Estimated to ship directly from the manufacturer on 07/15/21
    FREE Shipping
    Lowest Price Guarantee

    BP ST 5.0 R Series Cylinder Heads
  • 185cc Intake Port Volume
  • 100% CNC Ported
  • Unassembled, Bare Head
  • $2,813.86
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    BP ST 5.0 R Series Cylinder Head
  • CNC Ported
  • 185cc Intake Ports
  • 66cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Valve Sizes
  • Bare, 2/pkg.
  • View Details
    $2,813.86
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    BP ST 5.0 R Series Cylinder Heads
  • 185cc Intake Port Volume
  • 1.470'' Diameter Valve Springs - 325# Open, 125# Closed Spring Pressure100% CNC Ported
  • $3,284.96
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    BP ST 5.0 R Series Cylinder Head
  • CNC Ported
  • 185cc Intake Ports
  • 60cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Titanium Retainers
  • Assembled, 2/pkg.
  • View Details
    $3,284.96
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee

    $3,284.96
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee
    BP ST 5.0 R Series Cylinder Head
  • CNC Ported
  • 185cc Intake Ports
  • 66cc Combustion Chambers
  • 2.020'' Intake / 1.600'' Exhaust Stainless Steel Valves
  • 1.470'' Dia. Springs - 125# Seat Pressure
  • Titanium Retainers
  • Assembled, 2/pkg.
  • View Details
    $3,284.96
    Estimated to ship directly from the manufacturer on 06/28/21
    FREE Shipping
    Lowest Price Guarantee