Kunnyz | Rear Under Diffuser for Toyota GRX130 Mark X

Kunnyz | Rear Under Diffuser for Toyota GRX130 Mark X

The Kunnyz Rear Under Diffuser for the Toyota GRX130 Mark X gives the chassis a lower, sharper VIP-style aero look while keeping the factory body lines clean.

A rear under diffuser that finishes the lower rear bumper area with a sharper VIP sport look.

This is the shop of D1 driver Kuniaki Takahashi. Kunnyz is known for real drift-focused styling and high-quality aero parts developed around Japanese street and drift cars.

Full 3P kit can be purchased here: Kunnyz VIP Spec Lip Kit for Toyota GRX130 Mark X

Vehicle Fitment

• Toyota GRX130 Mark X

⚠️ Professional installation required. Aero products may require trimming, drilling, sanding, bodywork, prep, and paint before installation.

📩 Email us at [email protected] for any questions

Japan Parts Service

This is a Japan Parts Service. Some items are made to order and typically take 4–8 weeks for production.

Shipping estimates:

• Air Mail: typically 4–6 weeks (may be shorter if item is in stock in Japan)
• Container Shipping: typically 4–6 months

All sales are final. Please expect delays and do not purchase from this section if you are in a hurry.

Check out our “In Stock Aero” page for aero already in the USA ready to ship.