Stainless Steel Engine Inspection Plug (TDC Viewer Cap) – Hyosung GV125-S EFi (2018–Present)

Description

This upgraded stainless steel inspection plug replaces the rusty OEM flywheel viewer cap on the Hyosung GV125-S EFi / Aquila 125 S models. It’s stronger, cleaner, and much less likely to seize — a smart, long-term fix for a common maintenance headache.

💡 Why Upgrade?

• 🛡️ Rust-proof stainless steel — built to resist rain, salt, and corrosion
• 🔧 Multiple tool options — use an Allen key or socket; no awkward OEM tool required
• ⚙️ Exact OEM dimensions — perfectly seals your flywheel inspection port
• 🧼 Brushed stainless finish — gives your engine a clean, premium look
• 🪶 Lightweight yet strong — engineered for daily riders and show bikes alike
• 📦 Includes new sealing washer — ready to fit straight out of the box

📃 Model Fitment

📹 Product Showcase Demo:

🔧 Install & Use Tips for the Inspection Plug

• Clean the crank cover area before installation for a perfect seal.
• Apply a light touch of anti-seize compound to stainless threads if you ride all-season.
• Tighten gently — do not over-torque; follow OEM spec for small plugs.
• Ideal for valve clearance, timing checks, or general inspection.

💬 Questions? Ask in our Hyosung Forums or contact us directly — we’re here to help keep your GV125-S running perfectly!