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Circuit Hero

Circuit Hero High Pressure Valved-Radiator Cap

Circuit Hero High Pressure Valved-Radiator Cap


Regular price $35.00
Regular price Sale price $35.00
Sale Sold out
Shipping calculated at checkout.

Circuit Hero high pressure radiator cap uses a 1.3 kgf/cm² spring to increase your coolant/antifreeze boiling point and protect your engine.

An added bonus we've incorporated is the built-in button valve. To ensure there is no hot heat pressure built up, always press the button to make sure there is no hot vapors in your radiator before opening the cap. Pressing the button also allows hot vapors to escape for quicker cooling.



  • High pressure spring to raising engine boiling point
  • Safety button to reduce chance of being burned


  • Release hot vapors to cool down engine faster

Please Note: Some aftermarket radiators do not use a factory cap. For example, Koyo uses Type A on most their radiators regardless of application. Please check yours before ordering.

Please Note: Circuit Hero Radiator Caps have extremely tight fit





What's Included?

Install Guide



We realize that returns and exchanges are a part of the purchasing process and we do our best to make it as easy as possible. If you are not 100% satisfied with your purchase, you can return your order to Liken Motorsports within 30 DAYS from the invoice date.

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Circuit Hero High Pressure Valved-Radiator Cap

Frequently Asked Questions

Do you ship overseas?

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.

How long will it take to get my order?

It varies based on your location. Orders processed here will take 1-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details and updates will be provided in your order confirmation email.

Any question?

You can contact us through our contact page! We will be happy to assist you.