NGK Uprated HT Coil Spark Plug Cap/Covers [x2] – Hyosung GTR GT GV (Various Models)
Bike jerking when hot or around 6k RPM? The factory black caps often break down internally. This genuine NGK Uprated Set (x2) provides a superior, moisture-proof connection that delivers a consistent spark every time, in any weather.
- ✅ Fixes Hesitation: Eliminates misfires caused by faulty OEM caps.
- 🛠️ Trusted Brand: Genuine NGK quality you can rely on vs. original old parts.
- ⚙️ EPDM Rubber Build: Rugged, heat-resistant, and vibration-proof design.
- 📦 Dual Pack: Includes Front & Rear caps needed for all V-Twins.
Ensure your front and rear engine dust caps/covers are in place! Water from the front wheel hitting the spark plug hole is a common failure point that will cut the engine.
Description
When it comes to ignition performance, every component counts. Many Hyosungs suffer from poor OEM caps that break down over time, leading to weak spark, misfires, and inconsistent performance. This NGK upgrade is a premium, proven solution used by riders who demand reliability and power.
The failures often happen when the cap gets hot, causing jerking between 6k–9k RPM, or an erratic RPM needle. This kit solves those issues permanently with high-quality, weatherproof EPDM rubber caps.
💎 Trusted NGK Reliability
Forget the cheap factory-OEM caps. This NGK upgrade provides superior heat resistance and consistent performance.
| Improved Heat Resistance Stable performance even when the engine bay gets hot. |
Moisture-Proof Design Avoids electrical leakage & cuts out. |
| Better Vibration Resistance Silicone outer shell prevents cracking. |
Faster Cold Starts Consistent spark with ceramic resistor tech. |
📜 Confirmed Fitment (V-Twin Sports & Cruisers):
OEM Reference Examples: 33500H88412, 33500H88411, 33500H88410
| GT125R & RC | GT250R & RC | GT650R & RC |
| GV650 | GV125 Aquila (Up to 2017) | ST7 |
| GV250 Carby & EFI | GT125 Naked | GT250 Naked |
🔧 Installation Tips & Advice
Easy “swap & go” installation, just follow these pointers:
- **Re-use Dust Caps:** This is vital. The caps sit deep in the engine hole. You must ensure the original dust caps are reused to protect the plug holes from water spray off the front wheel (front cylinder) and general weather attacks (rear cylinder).
- **Clean Connections:** Clean the coil terminal and the plug top before fitting the new cap for a perfect electrical connection.
- **Inspect Leads:** Check your existing HT leads (the thick wire) for cracks or general wear – replace if needed.
- **Don’t Force It:** Push the new cap on firmly until fully seated, but do not overtighten the internal screw that connects to the HT lead.
📧 SALES ENQUIRY? Email us for direct product questions. For technical help and troubleshooting misfires, visit the HyoRiders Help Forums.
Additional information
| Weight | 0.5 kg |
|---|---|
| Dimensions | 10 × 5 × 2.5 cm |
7 reviews for NGK Uprated HT Coil Spark Plug Cap/Covers [x2] – Hyosung GTR GT GV (Various Models)
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GARAGE PICKS // ADD TO BUILD
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Uprated Ignition Coil – Carby Hyosung GV125 GT125 GV250 GT125R GT250
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Your Hyosung parts hub genuine & aftermarket parts + upgrades with UK & worldwide shipping.
Lee Bartlett (verified owner) –
Fits a lot better than original plug cap and as always you can’t go wrong with NGK products. Very good quality plug cap.
dufferdave (verified owner) –
Top Quality , improves performance and tickover.
Andy (verified owner) –
Easy upgrade
Luke –
Easily fitted and noticeable improvement. Highly recommended. Fast delivery to Spain. Excellent service from Marcel
eman ellul –
Just upgraded to the uprated coils, the uprated regulator, the uprated stator and ngk caps with iridium spark plugs. I have to say it made an amazing difference, the bike almost no longer needs choke (less than a minute and only on first start in the morning), acceleration has improved significantly and my bike is now charging (which was my original problem :p). Very happy with all items 🙂
Bike is a 2003 gv250 carby model
sverrema –
Ordered these from Norway. Super fast delivery and responses from the team during the order process. The caps together with uprated coils and iridium spark plugs have made a big difference. Cold start much easier and engine feels snappier 🙂
MattHyo627 (verified owner) –
Installed on RC 2018. Can’t go wrong with NGK, the rest of the reviews have got everything spot on. Can’t fault them, great starts, improved performance and great value. Can’t beat it.
Matt