HARLEY-DAVIDSON 31977-93 Braided Plug Wires

( Brand: Harley-davidson ), ( Manufacturer Part Number: 31977-93 ), ( Type: Spark Plug Wires ), ( Vintage Part: Yes ), ( Performance Part: No )

Review HARLEY DAVIDSON New Open Package Red And Silver Braided Plug Wires fits FXR

The **Harley-Davidson 31977-93 FXR Braided Plug Wires** are a premium, high-performance replacement for the stock ignition wires found on select Harley-Davidson models, including the iconic FXR series. Engineered with Harley-Davidson s signature attention to detail, these wires are designed to deliver optimal spark performance while maintaining the classic aesthetic and rugged durability expected from a Harley-Davidson motorcycle. Crafted from a **high-quality braided copper conductor**, these wires ensure superior electrical conductivity, minimizing resistance and maximizing the efficiency of the spark plug s ignition process. The braided construction also provides enhanced flexibility and resistance to vibration, reducing the risk of wire fatigue or breakage over time an essential consideration for riders who demand reliability on long rides or in challenging conditions.

The **insulation and outer jacket** of these wires are built to withstand extreme temperatures, oil, and fuel exposure, making them ideal for both street and off-road applications. The durable, heat-resistant material ensures longevity, even under the harshest riding conditions, while the sleek, black braided design complements the aggressive styling of the FXR s engine bay, blending performance with aesthetics. Each wire is meticulously assembled with **high-grade connectors** that guarantee a secure and corrosion-resistant fit, preventing signal loss and ensuring consistent spark reliability. Whether you're a cruiser, a touring enthusiast, or a performance-focused rider, these wires are a straightforward yet impactful upgrade that enhances both the performance and the timeless appeal of your Harley-Davidson.

For riders who prioritize precision and durability, the **31977-93 FXR Braided Plug Wires** represent a seamless blend of Harley-Davidson engineering and aftermarket excellence. They are a direct replacement for the OEM wires, ensuring an easy installation process without the need for additional modifications. With their superior conductivity, robust construction, and Harley-Davidson-backed quality, these wires are an ideal choice for those seeking to optimize their motorcycle s ignition system while maintaining the brand s legendary craftsmanship.

### **Pros and Cons of Buying Harley-Davidson Part Number 31977-93 FXR Braided Plug Wires**

1. **OEM Quality and Compatibility** These are genuine Harley-Davidson parts, meaning they are designed specifically for the FXR engine and will fit without modification. They meet the manufacturer s standards for performance and durability.

2. **Superior Electrical Conductivity** Braided plug wires are known for better heat dissipation and electrical flow compared to standard rubber-coated wires. This can help prevent misfires, especially in high-performance or older engines where carbon buildup is common.

3. **Longer Lifespan** The braided construction is more resistant to wear, cracking, and oil resistance than traditional rubber wires, which can degrade faster in high-heat environments like under a motorcycle s engine.

4. **Improved Ignition Reliability** If your bike is experiencing intermittent misfires or weak spark, upgrading to braided wires can restore consistent ignition performance, which is particularly useful for cruisers like the FXR.

5. **Easier Installation** Since they are direct replacements, installation is straightforward no need for customization or additional tools beyond basic motorcycle maintenance skills.

6. **Aesthetic Appeal** Braided wires have a classic, rugged look that complements the FXR s vintage-inspired design, making them a stylish upgrade if appearance matters.

7. **Reduced Risk of Short Circuits** The braided material is less prone to insulation failure from heat or abrasion, which can be a concern in older bikes with worn wiring.

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1. **Higher Cost** Braided plug wires are more expensive than standard rubber-coated wires. While they offer better performance, the price difference may not be justified for riders who don t experience ignition issues.

2. **Potential Overkill for Minor Issues** If your bike s misfires are caused by something other than wiring (e.g., faulty spark plugs, ignition coils, or a weak battery), upgrading just the wires won t solve the problem. A thorough diagnosis may be needed first.

3. **Slightly More Fragile in Extreme Conditions** While braided wires are durable, they can still be damaged by sharp edges, excessive tension, or improper routing. Unlike rubber wires, they may not "give" as much if snagged, potentially leading to breaks if not handled carefully.

4. **Limited Availability** As OEM parts, they may not be as widely stocked as aftermarket alternatives. You might need to order them online or from a Harley dealership, which could take longer than picking up generic wires at a local shop.

5. **Installation Requires Care** Because braided wires are more delicate than rubber-coated ones, improper handling during installation (e.g., excessive bending or twisting) could shorten their lifespan or cause failure.

6. **No Significant Performance Boost for Stock Engines** If your FXR is running well with stock components, the upgrade may not provide noticeable benefits beyond reliability. The improvement is more noticeable in high-mileage or modified bikes.

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Harley-Davidson s **31977-93 FXR braided plug wires** are a solid investment if you re experiencing ignition-related issues (e.g., misfires, weak sparks) or want to future-proof your bike s electrical system. Their superior conductivity, durability, and OEM compatibility make them a worthwhile upgrade for riders who prioritize reliability and longevity. However, if your bike is running smoothly and you re on a tight budget, standard rubber-coated wires may suffice.

For most FXR owners with older bikes or those who notice electrical quirks, the braided wires are a **recommended upgrade** especially if you plan to keep the bike long-term. If you re unsure whether the issue is wiring-related, a diagnostic check (e.g., testing spark plugs, coils, or the ignition system) is advisable before purchasing.

- You re replacing old or worn-out wires.

- Your bike has intermittent misfires or weak sparks.

- You want a more durable, high-performance wiring solution.

- You appreciate the classic look and don t mind the higher cost.

- Your bike is running fine with current wires.

- You suspect the problem lies elsewhere (e.g., ignition coils, fuel system).

- You re on a tight budget and can t justify the extra expense.

Details:

This listing includes. New OPEN PACKAGE Harley-Davidson FXR Red Silver braided plug wires 31977-93.

part #: 3197793 prices

• $30.00-$77.55

specifications cyclesparkplugs:

• for models: Fxr
• for makes: Harley
• brand: Harley-davidson
• mpn: 31977-93
• type: Spark Plug Wires
• vintage part: Yes
• performance part: No

general cyclesparkplugs:

• Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Spark Plugs
• condition: New other see details

shipping cyclesparkplugs:

• service: USPS Ground Advantage
• transit: 3-7 Days
• carrier: USPS
• type: Fixed
• class: Standard
• cost: $8.95

payments cyclesparkplugs:

• wallet: Paypal
• other
• credit card: Mastercard

offer cyclesparkplugs:

• sold: 0
• started: February 24, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home

returns cyclesparkplugs:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

seller cyclesparkplugs:

• city: Silver Spring, Maryland
• rating: 100.0%
• # reviews: 2196

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