Name: Front Engine Sprocket Nut &amp; Washer Lock - Hyosung GT GT650R GV650
SKU: 09167H25004-09159H20001
Availability: InStock

Front Engine Sprocket Nut & Washer Lock – Hyosung GT GT650R GV650

Estimated delivery dates: May 4, 2026 - May 6, 2026

£29.95

💎 FRONT SPROCKET NUT & LOCK KIT | DRIVETRAIN SECURITY

Secure your front sprocket correctly and safely. The quality of this critical retaining hardware prevents catastrophic damage to your gearbox shaft and stops the sprocket from loosening under V-Twin torque. This is a non-negotiable safety upgrade.

✅ Safety: New locking tab guarantees security—do not reuse old parts!
🛠️ Material: Hardened steel construction resists thread stripping.
⚙️ Install: Must be torqued to manual spec with threadlock.
📦 What’s Included: 1x Nut (PN: 09159H20001) & 1x Lock Washer (PN: 09167H25004).

⚠️ CRITICAL SAFETY ALERT: Reusing the old, bent lock washer is unsafe. This vital two-piece set must be installed new every time you change your front sprocket. Period.

Description

Over time, the intense vibrations and torque from your 650cc V-Twin engine fatigue the locking tab washer and the threads of the retaining nut. The cheap components found on auction sites simply do not meet the tensile strength required for this high-stress application. This genuine-spec hardware is essential maintenance for life on the road , and ensures peace of mind that your sprocket will not come loose while riding.

💎 The Core of a Safe Drivetrain

Small parts, massive implications. Ensure your performance upgrades are bolted down correctly.

Prevents Damage Protects your gearbox output shaft.	High-Torque Rated Designed for 650cc power delivery.
Exact OEM Spec Perfect thread pitch & fitment.	Safety First New tab washer included.

📜 Confirmed Fitment Guide

✅ FITS: GT650, GT650R, GT650RC, GV650 Aquila/Avitar (Naked & Sport Models).
📅 YEARS: All V-Twin 650cc models from 2005 to 2020 (Carb & EFI, 5-speed & 6-speed).
❌ WILL NOT FIT: Any 125cc or 250cc models.

💡 ESSENTIAL PAIRING:
If you are replacing this hardware, you should be replacing your chain and sprockets too! View complete X-Ring GT650 Chain & Sprocket Kits here.

🔧 Install Tips

Torque Spec is Key: You *must* use a torque wrench and consult your service manual for the exact figure to avoid stripping threads or coming loose.
Lock It Down: Use a drop of medium-strength thread-locking compound (Loctite Blue) for added security before bending the new washer tab into place.

📧 NEED THE MANUAL? Email us or download the official service manual from the HyoRiders Forums for free.