What is the resistance of these spark plug wires?

These Moroso Ultra 40 wire sets have a resistance of 40 ohms per foot. This specification helps to reduce radio frequency interference (RFI) from the ignition system.

Are these wires difficult to install on my Harley-Davidson XL?

These wires are designed as a direct replacement and fit right onto your existing ignition components. Most owners find them straightforward to install, but always refer to your service manual for specific procedures.

What does the 'Prop 65' warning mean?

The California Proposition 65 warning indicates that the product may contain chemicals known to the state of California to cause cancer or reproductive harm. This is a state-mandated disclosure.

Specifications

Brand: Moroso
Part #: 28631
UPC: 084663286315

Moroso 07-13 Harley-Davidson XL Ultra 40 Wire Set - Red

Name: Moroso 07-13 Harley-Davidson XL Ultra 40 Wire Set - Red
Brand: Moroso
SKU: moroso-moroso-07-13-harley-davidson-xl-ultra-40-wire-set-red-t14-588257
Price: 31.99 USD
Availability: BackOrder

$31.99

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits 2007-2013 Harley-Davidson XL models.
Features a 40-ohm resistance per foot conductor to minimize RFI.
Durable silicone jacket and high-temperature boots protect against heat and vibration.
Vibrant red color for a custom look.
Designed for a secure connection to the spark plug.

This wire set is designed for 2007-2013 Harley-Davidson XL models. Please verify fitment for your specific motorcycle.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

No-fit, no charge. Wrong part? Send it back, free return label.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

Moroso's Ultra 40 wire set uses a 40-ohm resistance per foot conductor, which is a solid choice for Harley-Davidson XL models from 2007 to 2013. This resistance level helps reduce radio frequency interference, keeping your bike's electronics running smoothly without unnecessary noise. The wires are finished in a vibrant red, adding a touch of custom style under the seat.

These wires are built with a silicone jacket and high-temperature boots, designed to withstand the heat and vibration common in V-twin engines. The boots are designed to fit snugly onto your spark plugs, ensuring a secure connection that won't vibrate loose. This attention to detail helps maintain consistent spark delivery, which is crucial for reliable engine performance.

When you're looking to replace your aging spark plug wires or just want to add a bit of custom flair to your Harley XL, this Moroso set is a well-built option. They are made to fit right, making the installation straightforward for most DIY mechanics.