Dragon Fire Race-Series High Performance Low Resistance Spark Plugs Wires Dragon Fire spark plug wires were created to deliver the best performance with long-term reliability. Featuring a Kevlar core with ultra-low resistance spiral wound Copper-Nickel Alloy (CuNi) (3:1) conductor. With an impressive turn ratio of 100:1, lowering the wire resistance to 150 ohms per foot. The conductor is then protected with a high dielectric strength co-polymer compound coating to help eliminate voltage leaks and Radio/Electromagnetic Frequency Interference (RFI/EMI). The wire is then coated again in a highly durable silicone and EPDM sleeve. All terminals are protected by extra thick silicone boots to ensure optimal spark delivery and long service life. Heat Rated to 600° F. Dragon Fire spark plug wires are a great alternative to high resistance factory OEM or cheap imitation performance spark plug wires. These spark plug wires are specially designed as a direct replacement for your old worn factory spark plug wires. *Be sure to check the Fitment Guide to confirm this is the correct part before purchase* Be sure to compare our pictures and lengths (end to end) to your original wires Fitment: 1999-2017 Harley Davidson Dyna Models 1999-2005 Harley Davidson Dyna Super Glide FXD 1999-2005 Harley Davidson Dyna Low Rider FXDL 1999-2000 Harley Davidson Dyna Super Glide Convertible FXDS CONV 1999-2005 Harley Davidson Dyna Wide Glide FXDWG 1999-2000 Harley Davidson Dyna Super Glide Sport FXDX 2001-2002 Harley Davidson Custom Vehicle Operations FXDWG2 FXDWG2 2001-2005 Harley Davidson Dyna Super Glide Sport FXDX 2001-2003 Harley Davidson Dyna Super Glide T Sport FXDXT 2004 Harley Davidson Dyna Super Glide EFI FXDI 2004-2006 Harley Davidson Dyna Low Rider EFI FXDLI 2004-2006 Harley Davidson Dyna Wide Glide EFI FXDWGI 2005-2006 Harley Davidson Dyna Super Glide EFI FXDI 2005 Harley Davidson Dyna Super Glide Custom FXDC 2005-2006 Harley Davidson Dyna Super Glide Custom EFI FXDCI 2006 Harley Davidson Street Bob EFI FXDBI 2006 Harley Davidson 35th Anniversary Super Glide FXDI35 2007-2010 Harley Davidson Dyna Super Glide FXD 2007-2017 Harley Davidson Street Bob FXDB 2007-2014 Harley Davidson Dyna Super Glide Custom FXDC 2007-2009 Harley Davidson Dyna Low Rider FXDL 2007-2008 Harley Davidson Custom Vehicle Operations Dyna FXDSE 2007-2008 Harley Davidson Dyna Wide Glide FXDWG 2008-2017 Harley Davidson Fat Bob FXDF 2009-2010 Harley Davidson CVO Dyna Fat Bob FXDFSE 2010-2017 Harley Davidson Wide Glide FXDWG 2012-2016 Harley Davidson Switchback FLD 2014-2017 Harley Davidson Low Rider FXDL 2016-2017 Harley Davidson Low Rider S FXDLS Wire Lengths: 1x8" 1x20" Fitment Note: Pre-assembled with straight boots for the coil end and 90-degree boots for engine side. Wires Intended for all Applications listed above, but be sure to check your original wires first to verify a visual match. Replacement For These Popular Part Numbers: 31937-99C 31944-99C 31930-99C About Dragon Fire Performance The goal at Dragon Fire Performance is to provide customers with the highest quality of performance parts and positive experiences. Meeting and exceeding your urgent needs in a timely manner. Dragon Fire is the Motorsports and performance division of Global Direct Automotive, specializing in quality performance products for over 10 years. The positive customer experiences and acceptance of the Dragon Fire brand throughout the world; has allowed them to quickly become one of the top performance parts suppliers in their respective field. Dragon Fire is one of the leading innovators in spark plug wire technology. With over a decade of feedback and R&D in their state-of-the art facilities. They continually drive forward to evolve and improve, using only the latest ignition technologies and most advanced testing methods.