SKU: 7230588456

Koyo Hyper Cap, (Shallow Plunger), 1.3 Bar, Blue Racing Radiator Cap, (SK-D13) Fits Subaru BRZ, & Toyota GT86 Only

Sale price$44.10 Regular price$49.00
Save 10%

Pay in installments of $12.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Koyo Hyper Cap, (Shallow Plunger), 1.3 Bar, Blue Racing Radiator Cap, (SK-D13) Fits Subaru BRZ, & Toyota GT86 OnlyPart # SK C13 (RED) Deep plunger fits all Koyorad radiators w filler necksPart # SK D13 (Bottom photo BLUE) Shallow plunger only fits OEM 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

Part # SK-C13 (RED) Deep plunger fits all Koyorad radiators w/ filler necks
Part # SK-D13 (Bottom photo BLUE) Shallow plunger only fits OEM 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
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7230588456

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 18 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jess
Cuba, US
★★★★★ 1
Not functional
Tree part is very cheaply made plastic material and does not fit well into the stand at all
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2026
D
Verified Purchase
DBS
Battle Creek, US
★★★★★ 2
Don’t bother, not worth the $
Much smaller in person than it appears. Looks more like a piece of coral than a tree. I got this to display some ornaments for sale at craft fairs, but it’s so small, it looks silly with the ornaments on it. Super flimsy, made of cheap plastic. Definitely not worth $14. Will be returning.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
Marlene Cayetano
Lexington, US
★★★★★ 5
Durable
Very durable and can hold a few pieces
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 5
Cute
Just as described, perfect for putting rings and bracelets on. I put lines on the branches to resemble a birch tree . Its good value for the money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 8, 2025
R
Verified Purchase
Richard Klementovich
Waukegan, US
★★★★★ 1
Cheaply Made
Not worth the money it costs imo
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026

recommand products