Name: Stainless Steel Engine TDC Inspection Plug [Flywheel Viewer Cap] - Various Hyosung Models
SKU: SS-TDCPLUG
Availability: InStock

Stainless Steel Engine TDC Inspection Plug [Flywheel Viewer Cap] – Various Hyosung Models

Estimated delivery dates: May 2, 2026 - May 4, 2026

£7.99

💎 STAINLESS ENGINE TDC PLUG | CORROSION-PROOF FLYWHEEL CAP

Say goodbye to stuck, rusty OEM plugs. This CNC-machined Stainless Steel upgrade replaces the soft factory inspection cover. It’s designed to survive salty EU roads and ensures you’ll never struggle to find Top Dead Centre (TDC) again.

✅ Multi-Tool Drive: Fits Allen keys, sockets, or hex bits—no more “mystery tool” hunts.
🛠️ Solid Stainless: 100% weatherproof and salt-resistant. It will NOT seize over winter.
⚙️ Precision CNC: Perfect thread engagement with a lower, cleaner profile than stock.
📦 What’s Included: 1x Stainless TDC Plug + Fresh Sealing Washer.

💡 MAINTENANCE WIN: Unlike the original part, this won’t round off when the engine is hot. Essential for valve clearances and ignition timing checks on legacy Hyosung models.

Description

If you have ever tried to service an older Hyosung, you know the original engine plugs love to seize and round off. This Stainless Steel TDC Inspection Plug is the definitive upgrade for the “Legacy” era bikes. It doesn’t just add a high-end CNC look to your stator casing; it makes engine work easier by allowing you to use common workshop tools instead of specialized bits.

💎 Performance Upgrades & Visual Look

A small detail that makes a massive difference during your weekend maintenance.

Solid Stainless Won’t rust, chip, or flake like the OEM finish.	Universal Drive Use a socket, hex bit, or Allen key to open.
Leak-Free Seal Comes with a new washer for a perfect fit.	Lightweight CNC Lower profile design for a cleaner engine look.

📜 Confirmed Fitment Guide

✅ FITS (2001-2017 Era):
• GT125 / GT125R / GT250 / GT250R / GT650 / GT650R
• GV125 / GV250 / GV650 (Aquila Models) / ST7
• RT125 / RX125 / XRX125 / GD250N / GD250R / TE450S

❌ WILL NOT FIT: GV125-S EFi (2018+) or GV300-S EFi (2020+).

💡 RECOMMENDED PAIRING:
Need the larger plug for the centre of the casing? Check out our Stainless Steel Flywheel Crank Plug to complete the set. Browse Engine Parts here.

🔧 Install Tips

Hand Start: Always start the threads by hand to ensure a perfect CNC fit before tightening with a tool.
Cold Engine: For the best seal, install while the engine is cool.

📧 FITMENT QUESTIONS? Email us with your model and year. For technical advice visit the HyoRiders Forums.

OEM Ref: 09247H12102