Harddrive HD Performance Coils - HP Coil Dual Fire Quad Tower — Harley-Davidson Sportster 1200 Custom, Sportster Sport, Sportster 1200 (1998-2003)

Harddrive HD Performance Coils deliver 30,000 volts of spark energy for V-twin motorcycles, boosting peak spark voltage by 20% or more compared to stock coils. ION Sense feedback keeps the coil synchronized with stock Harley EFI systems for reliable cold starts and high-RPM performance without tuning modifications.

Features

• 30,000-volt high-power output
• ION Sense feedback compatible with stock Harley EFI ECU
• Dual Fire and Single Fire application support
• Increases peak spark voltage by 20% or more
• Improves cold starts and eliminates high-speed misfire

Specifications

• Brand: Harddrive
• Manufacturer Part #: 10-2014
• UPC: 191361439513
• Spark Output: 30,000 volts
• Length: 5 in
• Width: 3 in
• Height: 4 in
• Weight: 3 lbs
• Country of Origin: China (Mainland)

Fitment

Fits V-twin motorcycles, including Harley-Davidson and Indian Motorcycle models equipped with stock EFI systems and dual-fire or single-fire ignition.

Frequently Asked Questions

Will this coil work with my stock Harley ECU without a tuner?

Yes — ION Sense feedback keeps the coil synced with your stock EFI computer. No tuner or fuel management required.

How much hotter is the spark compared to stock?

Peak spark voltage increases by 20% or more, delivering a stronger, faster spark for better combustion.

Does this fit both Dual Fire and Single Fire systems?

Yes. These coils support both Dual Fire and Single Fire ignition architectures.

Will this stop my high-speed misfire?

The increased spark intensity and faster ignition typically resolve high-speed miss conditions caused by weak stock coils.

Do I need to replace both coils?

Check your bike's ignition system — some V-twins use one coil, others use two. Confirm your coil count before ordering.