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NGK Racing HT Coil Spark Plug Cap Cover [x1] – Hyosung RT125 RX125 MS3-250

Estimated delivery dates: Jun 19, 2026 - Jun 20, 2026

£19.99

🏁 NGK RACING HT COIL CAP | SINGLE CYLINDER RELIABILITY

Stop hot-running misfires. The stock caps are prone to failure, causing jerking or surging between revs. This genuine NGK Uprated Cap provides a consistent, high-power spark even when hot, ensuring your single-piston runs smoothly.

  • Fixes Hesitation: Eliminates inconsistent running caused by a failing cap.
  • 🛠️ Trusted Brand: Genuine Japanese NGK quality vs. generic Chinese caps.
  • ⚙️ EPDM Rubber Build: Rugged, heat-resistant, and vibration-proof design.
  • 📦 Sold Individually (x1): Everything you need for the single-cylinder engine.
💡 THE PERFORMANCE WIN:
This cap runs cooler and is moisture-proof, designed to maintain steady resistance over time—a crucial upgrade for the exposed engine area.
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Description

Spark plugs are essential, but the HT Coil Spark Plug Cap is the vital link that ensures a reliable electrical flow, even when your engine runs hot. Standard OEM caps are prone to wear, which can lead to performance issues and frustrating misfires.

Common symptoms of a faulty OEM cap include engine surging, an unsteady RPM needle, or a boggy exhaust note, especially during hotter running conditions.


💎 Trusted NGK Reliability

This NGK upgrade is made with high-grade ceramic and phenolic resin for outstanding heat and tension resistance.

Runs Cooler
Withstands higher engine temperatures.
Moisture-Proof
Heat press insertion and rubber liners prevent electrical leakage.
Improved RPM Performance
Faster cold starts and stable revs.
Vibration Resistant
Durable outer shell designed for single-cylinder rattle.

📜 Confirmed Fitment:

Reference OEM Part Numbers: 33500H88412, 33500HP9500, etc.

RX125 / XRX125 RT125 / RT125D MS3-250 (Scooter)

🔧 Installation Tips & Advice

Installation is “swap & go,” but a clean fit ensures optimal performance:

  • **Clean Connections:** Clean the plug top and coil terminal thoroughly before fitting.
  • **Inspect HT Lead:** Check the main high-tension lead wire for cracks or wear – replace if needed.
  • **Secure Fitment:** Push the cap on firmly until fully seated.
  • **Need Help?** Visit our Help Forums for step-by-step guidance.

📧 SALES ENQUIRY? Email us for direct product questions.

Additional information

Weight 0.5 kg
Dimensions 10 × 5 × 2.5 cm

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