My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Moroso 28327 Ultra 40 8.65mm Spark Plug Wire Set Black OE Boot Style

Manufacturer

Picture for manufacturer Moroso

Part Number

28327
5 reviews
Sale Price

$20.31

Estimated ship date Sunday, November 22

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Moroso 28327 Ultra 40 Spark Plug Wire Set delivers race-proven ignition performance for FXD and FXDWG motorcycles. Engineered to the same standard used in professional motorsports—from dual mag Top Fuel dragsters to NASCAR Sprint Cup—this wire set replaces OEM part number 31930-99A and is sold as a complete set.

Key Features:

  • 8.65mm diameter wire construction for maximum energy transfer and durability
  • 40 ohms per foot resistance rating via a highly engineered spiral-wound nickel/copper alloy conductor
  • Kevlar core rated four times stronger than standard aramid fiber cores for exceptional dielectric strength
  • Optimized EMI/RFI suppression minimizes electromagnetic and radio frequency interference with sensitive electronics
  • Extra-thick EPDM outer jacket provides superior dielectric strength, heat resistance, and protection against chafing and contaminants
  • Closely woven, silicone-impregnated fiberglass insulation adds up to 8,000 volts of additional protection
  • OE-style black boots for a clean, stock-appearance installation
  • Coil wire not included

The Moroso Ultra 40 is the benchmark ignition wire for performance-minded riders who demand reliable spark delivery and superior noise suppression. OEM cross-reference: 31930-99A.

Products specifications

Sold in Units

Pair

Found Autoplicity through price searching. Best price, easy to navigate site, quick service. Bookedmarked for future use!

Ordered a couple of items. The first was a air intake kit. I had put in all my info for my truck and chose one from the list to order. Won't fit. Called to tell them and they asked if I had called manufacturer...ummm no. Said I needed to contact them to verify wrong part. They were closed, so went to website. The part they sent me was a universal fit- for cars, not trucks, but did find right model- $90 more. Called back autoplicity and was told I need to go through email to get an RA# to return wrong part- site says I can call. Been on hold for over 20 mins and still waiting. Hope the Nerf bars I ordered fit! Update- they called me back, got my RA#. Very pleased with how Nick handled things- it was what I expected the first time. He verified the NERF bars will fit and will be changing the website so the universal intake does not show on list for vehicles with larger air outlets. Changing my rating to show my satisfaction with how it was eventually handled.

Very competitive price, responsive customer service, very satisfied.

Ordered my car accessory on 8/2, shipped on 8/3 and will be delivered on 8/4. Best prices online, great service, product in stock, and fast delivery. Nice Job & Kudos to Autoplicity!

Seller was quick and hasle free to deal with. Will purchase again from this seller.

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy