SKU: 56829653886

Koyo Hyper Cap, (Fits All Listed Koyo Radiators), 1.3 Bar, Red Racing Radiator Cap

Sale price$53.10 Regular price$59.00
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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

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Description

Koyo Hyper Cap, (Fits All Listed Koyo Radiators), 1.3 Bar, Red Racing Radiator CapPart # SK C13 (RED) Deep plunger fits all Koyorad radiators w filler necksPart # SK D13 (Bottom photo BLUE) Shallow plunger fits FR S, BRZ, and GT86 Extract every ounce of cooling efficiency from Koyorad All Aluminum Performance Radiators with a genuine Koyorad Hyper Cap! This Koyorad Hyper Cap withstands an increased valve pressure rating of 1. 3kgf cm2 (1. 3 bar) (18. 9 psi) (130 kPa) which increases the boiling point of water and relieves high

Part # SK-C13 (RED) Deep plunger fits all Koyorad radiators w/ filler necks
Part # SK-D13 (Bottom photo BLUE) Shallow plunger fits FR-S, BRZ, and GT86

Extract every ounce of cooling efficiency from Koyorad All Aluminum Performance Radiators with a genuine Koyorad Hyper Cap!  This Koyorad Hyper Cap withstands an increased valve pressure rating of 1.3kgf/cm2 (1.3 bar) (18.9 psi) (130 kPa) which increases the boiling point of water and relieves high-performance engines of excessive heat.   A genuine Koyorad Hyper Cap is recommended for use with every Koyorad All Aluminum Performance Radiator (when applicable).  This Koyorad Hyper Cap is manufactured in Japan from high-quality components to ensure longevity and performance from your Koyorad Racing radiator.

Why is increased Pressure Better?

It’s simple.  When water is pressurized, its natural boiling point is increased.  Most modern vehicles are equipped with a 0.9 Bar pressure cap.  Koyorad’s Hyper Cap is rated at 1.3 Bar which increases the boiling temperature of your coolant to 267.80 degrees Fahrenheit.  That is nearly a 56-degree increase over water's normal boiling point.  By increasing the boiling point of water, an engine's cooling system will have the added heat capacity, maximizing performance under ever-changing racing conditions.

 


Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 56829653886

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4.8 ★★★★★
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Patricia Snow
Cuba, US
★★★★★ 5
Love it
Size: Queen, Color: Dark Grey
I am very pleased with this product bed in a bag for Queen bed. Sheets are a perfect fit and silky soft they are a standard grade thread good price for me being on a budget.
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Reviewed in the United States on May 19, 2026
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Lindsey
Omaha, US
★★★★★ 4
Comfortable
Size: California King, Color: Wine & Black
Very nice sheet and comforter set. Wish it was a little warmer but I love the way they feel.
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Reviewed in the United States on January 1, 2026
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Verified Purchase
Tagrid
New York, US
★★★★★ 5
Very warm and cozy
Size: Queen, Color: Beige
Nice comforter and really pretty neutral color.
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Reviewed in the United States on May 31, 2026
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Jessica Brown
Omaha, US
★★★★★ 5
Good set!
Size: Queen, Color: Dark Grey
Love it! Good quality larger fit for bigger mattresses. I caught it on sale but it’s well worth the original price!
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Reviewed in the United States on May 24, 2026
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Verified Purchase
Tracy Blevins
Waukegan, US
★★★★★ 5
Soft
It came two days after I ordered it. It was a beautiful color, and the color of always one it looked amazing and it’s so soft and comfortable. I would definitely buy another one again in a different color. I need all of the colors.
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Reviewed in the United States on May 22, 2026

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