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H-D® SE Ignition & Tuning

Harley-Davidson® motorcycle ignition and electrical spark products help you stand out from the standard. Add customized style that's always right where you can see it.

1 - 20 of 41
  • £ 21.64
    £ 21.64

    Screamin' Eagle® ST Spark Plugs feature double platinum coating for superior erosion resistance and extended life. The "V" trimmed ground electrode reduces shrouding of the flame front to promote flame propagation, and the fine wire center electrode enhances start ups and ignitability.

    • Feature Ribbed Core Technology (RCT) that provides resistance to fouling, and are designed with Original Equipment-style noise suppression to prevent electrical interference with radios and CB communication equipment
    • Works great in racing applications where rich air/fuel conditions are required
    • Designed for high performance applications involving modifications in high flow air cleaners, cam shafts, exhaust, performance heads, ignition components, higher compression ratios above O.E configurations or engines specific for racing applications
    • Sold in pairs
  • £ 32.48
    £ 32.48

    Plug-in extension cable is wired to allow installation of the Screamin’ Eagle® Smart Tune PRO Automatic Tuning Module hardware on specific models.

    • No splicing or soldering is required
  • £ 43.33
    £ 43.33

    Threaded adaptors allow you to convert your M18 wideband O2 sensor equipped motorcycle back to the Original Equipment M12 O2 sensors.

    • Allows you to re-use your factory M12 threaded oxygen ensors after tuning the larger M18 threads found on the wideband oxygen sensors
    • Set of 2
  • £ 433.75
    £ 433.75

    Smart Tune Pro works with the Screamin' Eagle® Pro Street Tuner to automatically tune your bike for the combination of performance components, temperatures, altitude, and vehicle load conditions you are operating in. You just install the upgraded wideband oxygen sensors in the exhaust headers, download the calibration that our Screamin' Eagle® engineers have developed as a starting point, then simply drive down the road and let Smart Tune Pro do the work for you.

    • Constantly monitors the operating parameters of your motorcycle, and automatically adjusts the bike's Electronic Control Module (ECM) to maximize performance in most riding conditions
    • Utilizes wideband O2 sensors that read oxygen levels in the exhaust stream to determine the optimum air/fuel ratio, spark advance and timing your bike needs at this very moment
    • Incorporates the data and automatically makes real-time tuning adjustments to the ECM
    • Wideband sensors can read and help adjust tuning throughout the part throttle cruising and full-throttle acceleration operating range
    • Kit includes the Smart Tune Pro module with plug-in wiring harness, two M18 wideband O2 sensors, and access to free software updates, future calibrations and free on-line training modules
    • Screamin' Eagle® Pro Street Tuner and model-specific installation hardware is sold separately
    • Pending Regulatory Approval
  • £ 433.75
    £ 433.75

    This special tool is designed to make the necessary headpipe modifications for installation of the Screamin’ Eagle® Smart Tune PRO Automatic Tuning Module’s wide band oxygen sensors.

    • Simply remove headpipe and use custom ground drill and tap to convert the oxygen sensor threads from M12 to M18
    • No welding is required
    • Threaded adapaters to allow the re-installation of the factory M12 oxygen sensors are sold separately
  • £ 21.64
    £ 21.64

    Screamin' Eagle® ST Spark Plugs feature double platinum coating for superior erosion resistance and extended life. The "V" trimmed ground electrode reduces shrouding of the flame front to promote flame propagation, and the fine wire center electrode enhances start ups and ignitability.

    • Feature Ribbed Core Technology (RCT) that provides resistance to fouling, and are designed with Original Equipment-style noise suppression to prevent electrical interference with radios and CB communication equipment
    • Works great in racing applications where rich air/fuel conditions are required
    • Designed for high performance applications involving modifications in high flow air cleaners, cam shafts, exhaust, performance heads, ignition components, higher compression ratios above O.E configurations or engines specific for racing applications
  • £ 21.64
    £ 21.64

    Screamin' Eagle® ST Spark Plugs feature double platinum coating for superior erosion resistance and extended life. The "V" trimmed ground electrode reduces shrouding of the flame front to promote flame propagation, and the fine wire center electrode enhances start ups and ignitability.

    • Feature Ribbed Core Technology (RCT) that provides resistance to fouling, and are designed with Original Equipment-style noise suppression to prevent electrical interference with radios and CB communication equipment
    • Works great in racing applications where rich air/fuel conditions are required
    • Designed for high performance applications involving modifications in high flow air cleaners, cam shafts, exhaust, performance heads, ignition components, higher compression ratios above O.E configurations or engines specific for racing applications
    • Sold in pairs
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin’ Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Orange 10mm wire
    • Screamin' Eagle graphic printed along wire
  • £ 21.64
    £ 21.64

    Screamin’ Eagle Performance Spark Plugs feature double platinum coating for superior erosion resistance and extended life. The “V” trimmed ground electrode reduces shrouding of the flame front to promote flame propagation, and the fine wire center electrode enhances startups and ignitability.

    • For Stock Compression Applications
    • Features Ribbed Core Technology (RCT) that provides resistance to fouling
    • Designed with Original Equipment-style noise suppression to prevent electrical interference with radios and CB communication equipment
    • Works great in racing applications where rich air/fuel conditions are required
    • Designed for modified engines including performance carburetors, high-flow air cleaners, camshafts, exhaust systems and ignition systems in conjunction with stock compression ratios
    • Unique style with Screamin’ Eagle logo
    • Sold in pairs
  • £ 25.10
    £ 25.10

    Screamin’ Eagle Performance Spark Plugs feature double platinum coating for superior erosion resistance and extended life. The “V” trimmed ground electrode reduces shrouding of the flame front to promote flame propagation, and the fine wire center electrode enhances startups and ignitability.

    • For High Compression Applications
    • Feature Ribbed Core Technology (RCT) that provides resistance to fouling
    • Designed with Original Equipment-style noise suppression to prevent electrical interference with radios and CB communication equipment
    • Works great in racing applications where rich air/fuel conditions are required
    • Designed for high performance applications involving modifications in high-flow air cleaners, camshafts, exhaust, performance heads, ignition components, higher compression ratios above OE configurations or engines specific for racing applications
    • Unique style with Screamin’ Eagle logo
    • Sold in pairs
  • £ 25.10
    £ 25.10

    Screamin’ Eagle Performance Spark Plugs feature double platinum coating for superior erosion resistance and extended life. The “V” trimmed ground electrode reduces shrouding of the flame front to promote flame propagation, and the fine wire center electrode enhances startups and ignitability.

    • For Stock Compression Applications
    • Feature Ribbed Core Technology (RCT) that provides resistance to fouling
    • Designed with Original Equipment-style noise suppression to prevent electrical interference with radios and CB communication equipment
    • Works great in racing applications where rich air/fuel conditions are required
    • Designed for modified engines including performance carburetors, high-flow air cleaners, camshafts, exhaust systems and ignition systems in conjunction with stock compression ratios
    • Unique style with Screamin’ Eagle logo
    • Sold in pairs
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Red
    • 10mm wire
    • Screamin' Eagle® graphic printed along wire
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Orange
    • 10mm wire
    • Screamin' Eagle® graphic printed along wire
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Black
    • 10mm wire
    • Screamin' Eagle® graphic printed along wire
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Adds dimension and style to your ride
    • Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs
    • Screamin' Eagle® graphic printed along wire
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Red 10mm wire
    • Screamin' Eagle® graphic printed along wire
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Orange 10mm wire
    • Screamin' Eagle® graphic printed along wire
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Red 10mm wire
    • Screamin' Eagle® graphic printed along wire
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Black 10mm wire
    • Screamin' Eagle® graphic printed along wire
  • £ 32.48
    £ 32.48

    Fat 10mm plug wires add dimension and style to your ride. Screamin' Eagle® boot design and suppression core wires ensure solid connection and maximum voltage transfer between coil and plugs.

    • Black 10mm wire
    • Screamin' Eagle® graphic printed along wire
    • Cut to length for proper fitment
1 - 20 of 41

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