KAYO 101024-0273 Bull Ngk Spark Plug D8EA S1277

( Brand: Kayo ), ( Manufacturer Part Number: 101024-0273 ), ( Type: Spark Plug ), ( Oe/oem Part Number: Oem ), ( California Prop 65 Warning: Warning )

Review KAYO Bull Ngk Spark Plug Oem #101024-0273 #s1277 fits EFI 125 2018–2025

The **KAYO 101024-0273 Bull 125 EFI NGK Spark Plug (D8EA, Fits 2018 2025 Honda S1277 models)** is a high-performance, precision-engineered ignition component designed to deliver optimal combustion efficiency and reliability for modern fuel-injected motorcycles. Engineered with NGK s renowned **D8EA** electrode configuration, this spark plug features a **double platinum (DP) design**, combining a fine platinum center electrode with a platinum-iridium alloy ground electrode to ensure consistent, high-energy spark generation even under demanding riding conditions. The **0.7mm fine wire platinum tip** minimizes electrode wear, extending plug life and maintaining peak performance over extended mileage, while the **iridium alloy ground electrode** enhances durability and reduces fouling, making it ideal for high-revving, high-performance applications like the **Honda CB125F (S1277)** from 2018 through 2025. The **heat range of 200 220** strikes a perfect balance between thermal efficiency and resistance to pre-ignition, preventing overheating in aggressive riding scenarios while ensuring reliable cold starts and smooth operation across varying temperatures.

Crafted from **high-quality nickel alloy construction**, the KAYO Bull series plug is built to withstand the thermal and mechanical stresses of modern EFI (Electronic Fuel Injection) systems, where precise ignition timing is critical for fuel economy, power delivery, and emissions compliance. The **threaded design adheres to the OEM specifications**, ensuring a secure, leak-proof fit within the cylinder head, while the **resistor-coated tip** is optimized to work seamlessly with the motorcycle s ignition control module, reducing radio interference and improving overall system reliability. Whether you're seeking a direct replacement for stock components or upgrading to enhance performance, this plug offers **superior longevity, consistent firing, and minimal maintenance** qualities that make it a trusted choice for both daily commuters and enthusiasts pushing their bikes to their limits. Backed by KAYO s commitment to quality and NGK s global reputation for spark plug excellence, the **101024-0273 Bull 125 EFI** is a dependable upgrade that helps maintain the integrity of your Honda s engine while ensuring dependable starts, smooth acceleration, and peak efficiency across the entire powerband.

### **Pros and Cons of buying a NGK Spark Plug (D8EA, Part #: 101024-0273, Bull 125 EFI, for 2018-2025 Honda S1277 Models)**

1. **OEM Quality and Compatibility** This is an NGK D8EA spark plug, which is the original equipment manufacturer (OEM) part for Honda s 125cc EFI engines (such as the S1277 platform). It is designed to match the engine s specifications, ensuring proper performance and longevity.

2. **Reliable Performance** NGK is a well-known brand with a reputation for durability and consistent ignition reliability. The D8EA plug is optimized for Honda s fuel-injected engines, reducing misfires and improving fuel efficiency.

3. **Long Service Life** With proper maintenance, these plugs typically last between **20,000 to 30,000 miles** (or as recommended in the owner s manual). This reduces the frequency of replacements compared to cheaper aftermarket alternatives.

4. **Improved Engine Efficiency** A properly functioning spark plug ensures complete combustion, which can lead to better fuel economy and reduced emissions.

5. **Easy Installation** These plugs are standard-sized and widely available, making them straightforward to install, even for DIY mechanics.

6. **Warranty and Support** NGK offers warranties on their products, and they are widely supported by dealerships and mechanics, ensuring availability for future replacements.

7. **Compatibility with Aftermarket Tuning** Since this is an OEM plug, it works well with minor tuning adjustments, though aggressive modifications may require performance plugs.

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1. **Higher Upfront Cost** Compared to generic or budget spark plugs, NGK D8EA plugs are more expensive. A single plug can cost **$5 $10**, and since engines require multiple plugs (typically 4 6), the total cost adds up.

2. **Potential Overkill for Mild Use** If the motorcycle is used lightly (e.g., short rides, minimal high-speed use), these plugs may outlast their recommended service interval, leading to unnecessary replacements.

3. **Requires Professional Installation (Optional)** While installation is simple, improper gapping or installation (e.g., overtightening) can damage the plug or threads. Some riders may prefer a mechanic to ensure proper fitment.

4. **Limited Performance Gains Over OEM** Unlike high-performance plugs (e.g., NGK Iridium IX or Platinum), the D8EA is not designed for aggressive tuning. It will not significantly improve power or throttle response beyond stock levels.

5. **Availability Concerns in Some Regions** While widely available, in remote areas or during supply chain disruptions, NGK plugs may not be as easily accessible as generic brands.

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### **Conclusion**

The **NGK D8EA (101024-0273) Bull 125 EFI spark plug** is an excellent choice for Honda S1277 models (2018 2025) due to its **OEM compatibility, reliability, and long service life**. It strikes a balance between performance and cost, making it a **premium but practical option** for riders who prioritize durability and engine health.

However, if budget is a concern and the motorcycle is not heavily used, **generic or mid-range platinum plugs** (e.g., Bosch or Denso) could be a cost-effective alternative without sacrificing too much performance. For **high-performance or aggressive riding**, consider **iridium or platinum performance plugs** instead.

- **Best Overall Choice:** **NGK D8EA (101024-0273)** Ideal for standard use, reliable, and matches Honda s specifications.

- **Budget Alternative:** **Bosch or Denso Platinum plugs** Slightly cheaper but still durable for normal riding.

- **Performance Upgrade (Optional):** **NGK Iridium IX or Platinum Performance plugs** If tuning or aggressive riding is planned.

**Final Verdict:** If you want **OEM-level reliability and longevity**, the NGK D8EA is the best option. If cost is a major factor, a high-quality generic platinum plug is a reasonable substitute. Always follow the **Honda service interval** (typically every **20,000 30,000 miles**) for optimal performance.

Details:

Kayo Bull 125 EFI NGK Spark Plug D8EA 2018 2025 1 OEM # In Stock Ready To Ship. ITEM condition: NEW other These are open box products an item that was opened but is complete and has never been used, unless specified in the listing. This spark plug has not been used, but was open for a picture taking purposes. Our new old stock NOS Or a takeoff, which means it was taken off of machine when the purchased, has less than 1 mile.

Offers will also be reviewed and accepted 24/7. Some parts are not working and sold for only.

part #: 1010240273 price

• $12.95

specifications cyclesparkplugs:

• for models: Efi, 125
• for years: 2018-2025
• brand: Kayo
• mpn: 101024-0273
• type: Spark Plug
• oe/oem part number: Oem
• california prop 65 warning: Warning

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• started: May 12, 2026
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• Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Spark Plugs
• condition: New other see details

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