Harddrive HD Performance Coils - HP Coil EFI Marelli FLH/FLT 1999-2001 — Harley-Davidson Road King, Electra Glide Classic, Road Glide (1999-2001)

Harddrive HD Performance Coils are high-output replacement coils for 1999-2001 Harley Touring models with EFI, engineered to increase spark voltage by 20% or more for stronger ignition. ION Sense feedback ensures full compatibility with stock Harley ECUs while improving cold starts, eliminating high-speed misfire, and boosting fuel economy.

Features

• 30,000-volt high-power coil output
• Increases peak spark voltage 20% or more
• ION Sense feedback compatible with stock EFI ECU
• Supports Dual Fire and Single Fire applications
• Improves cold-start performance and reduces high-speed misfire

Specifications

• Brand: Harddrive
• Manufacturer Part #: 10-2010
• UPC: 191361439490
• Dimensions: 5 in L x 3 in W x 4 in H
• Weight: 3 lbs
• Country of Origin: China (Mainland)

Fitment

Fits 1999-2001 Harley-Davidson Touring (FLT) models equipped with EFI and Marelli ignition systems.

Frequently Asked Questions

Will these work with my stock Harley EFI and computer?

Yes — ION Sense feedback is engineered for plug-and-play compatibility with stock 1999-2001 Touring EFI ECUs. No tuner required.

Do these coils fit both Dual Fire and Single Fire ignitions?

Yes — these coils support both Dual Fire and Single Fire applications, making them versatile across model variations.

What improvement in performance can I expect?

Peak spark voltage typically increases 20% or more, which improves cold starts, eliminates high-speed misfire, and can improve fuel economy.

Will these fit my pre-1999 or 2002+ Touring?

This part number is specific to 1999-2001 Touring EFI models. Other model years use different coil designs.