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409 PRO RACE Black Spark Plug Wires - Touring/Trike Models

Availability: In stock
Manufacturer: Taylor Cable

409 PRO RACE Black Spark Plug Wires - Touring/Trike Models High Performance Maximum Fire Power Silicone ECM Dyna Softail Trike Freewheeler




by Taylor Cable

High Performance

Black Spark Plug Wires

Made In The USA


  • "409" PRO RACE wires provide continuous heat protection up to 600 degrees Farenheit.
  • The 10.4mm wires deliver 102,000 volts dielectric strength.
  • Spiral-Wound core with 350 ohms per foot resistance for EMI and RFI suppression delivers the Maximum Fire Power without radio interference.
  • Designed for use with electronic ignition systems found on Harley-Davidsons. They are 100% compatible with the Ion Sensing Knock Retard System used by Harley-Davidson.
  • Low Profile 100% silicone PRO BOOTS feature vibration proof double spring locking spark plug terminals.
  • Includes 3 Plug Zip Ties for securing wires in OEM location on frame (see photo)


It's the little things that make a difference.  

These wires are better at delivering power to the plugs, and they are better at delivering the signal back to the ECM for the Ion Sensing.  

This translates into a stronger, more efficient running engine.  They look good too!


You Won't Find a Better Wire For Your HARLEY


These fit all Touring & Trike Twin Cam Models that have the OEM coil below the seat, behind the rear cylinder.

Does not fit any M8 models!


I just installed these yesterday and went for a ride.  It may be my imagination, but my "seat of the pants dyno" said I had MORE power!  They look good too!  Thanks!  -Jimmy


"409” ignition wires provide continuous heat protection up to 600-degrees Fahrenheit

Customer Reviews

Easy order Review by BiggDot
Haven’t installed them yet (Posted on 7/24/2023)
Worth it for sure Review by Lucky
I wanted to change my plug wires and figured I’d upgrade at the same time. I ran across Doc Harley on YouTube talking about plug wires and he mentioned that just using anything was not the way to go about it and talked about the ion knock sensors that Harley has and that not all plug wires work well with them. He also showed a set of wires that are compatible with the harleys knock sensors and held up a set of instructions that I noticed had the DK Customs logo on it so I went to DKs site and found them, ordered and installed them and they’re working great! Fast shipping and exactly as described. Winner winner (Posted on 5/11/2023)
2009 Trike 409 plug wires Review by Doc
Improved throttle response and fuel mileage seems better, another fine product (Posted on 12/6/2022)
409 Pro Race plug wires for Touring/Trike models. Review by Heavy D
DK Customs customer service is outstanding! The wires are top quality, fit well and are very reasonably priced. You can't go wrong with DK. (Posted on 8/23/2021)
Wow plug wires improved performance. Review by Korky
Received order quickly. Installation was straight forward. Due to the tank wire clips to front cylinder, I did have to loosen the front bolts and raise the rear of the tank slightly. The clips will open enough to fit new wire size so they're not laying on the cylinder head. Out riding, I have felt a boost in performance and response. Overall I am happy with the purchase. (Posted on 8/23/2021)
409 PRO RACE Black Spark Plug Wires - Touring/Trike Models Review by RevJ
Definite boost in power for the good old Triglide. These wires are massive and seem to be of excellent quality. One of the cheaper upgrades for sure. Shipping was prompt and as always DKCustom products are quality. (Posted on 5/29/2021)
2010 FLHTCU in Blue Review by Kick ass touring!
Hard ass! (Posted on 6/10/2020)
409 Race Pro Wires Review by Wes
Got these for my 16 Tri Glide and very pleased with their quality and the felt improvement in performance. Installation was relatively easy, as I removed my gas tank. As usual, the shipping time was extremely fast. (Posted on 9/22/2019)
409 spark plug wires Review by Tucci
I installed these on my 15 Freewheeler @ 25,000 miles along with stock hd plugs. The improvement in power is nothing short of amazing. The wires are more than twice the thickness of stock and are developed for the hd ion sensors. I wish they would've come stock on the trike. (Posted on 7/29/2019)

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