RHDJapan Blog Blog on JDM news, racing, drifting and thoughts from Osaka


Cooling Campaign 2024 ~June 30

Greetings from the RHDJapan team. As we enter the early Warmer Weather Season we would like to take this into consideration to extend a campaign focused on Cooling Performance. In the aim for more power and higher performance, getting rid of excess heat is a critical, yet many times neglected, aspect of tuning. Proper Cooling Performance will make sure that all related functions work in optimally.
For this campaign we would like to extend a further discount from our standard great prices. ALL items included within the links below will qualify for additional 5% discount at checkout:

A great step 1 for a cost-effective DIY application is to upgrade with Low-Temp Thermostat and/or High-Pressure Radiator Cap. Ideal for any vehicle driven around in a spirted fashion. Available for a wide array of popular engines.
At the center of the water based Cooling System is the Radiator, upgrading this item will efficiently increase the coolant running throughout the engine. Available for most popular sporty cars.
Select vehicles may also have other items such as Fans & Shrouds to level up the draw airflow throughout the radiator. 

Make sure coolant can safely & securely travel in-between the hard-working engine with reinforced Radiator Hose. Tap directly into the Radiator Hose with Hose Attachment allowing sensor to tap directly for the most accurate and precise readings with Performance Meters. These gauges are available to closely monitor other engine vitals such as Oil Pressure and Oil Temperature

In order to adapt these high precisions sensors into the engine most applications utilize a spacer block placed in between the Oil Filter, Relocated or in-line.
Knowing and observing the limits of your machine is essential to avoid catastrophic failure and excess repair costs. When oil temperature becomes an issue, the most effective way to tackle it is with an add-on/upgrade Oil Cooler Kit. This is often available as a complete kit for popular applications. Also Oil Cooler Cores available for one-off and/or custom applications.

Making sure the coolant is properly flowing throughout the cooling system can be an issue on some select engines with Water Pumps. Making sure the engine oil is properly flowing and lubricating throughout the engine. A High-Flow type Oil Pump / Gear kit can be installed on some select engines.

Although much more rare and often for more extreme applications, a few select vehicles may want to consider a Cooler kit for their Transmission, Power Steering or Differential.

Turbo engines can quickly achieve extra power with some boost up. An Intercooler Kit will help cool down the hot air flowing throughout the engine and turbocharger to more safely and securely increase boost. Available as a direct replacement core or full kits. For the smoothest and most secure airflow from intercooler to engine, we have Piping Kits.

Other ways to improve airflow throughout the cooling system, braking system, intake and turbo systems can be assisted with Cooling Panels & Ducts.

The cooling efficiencies of both Water and Oil Coolings systems can often be further leveled up with the addition of COOLING COLLECTOR OR OVERFLOW AND CATCH TANKS.

Often for more serious hard driven machines Upgrade Oil Pans and Differential Covers not only allows for improved cooling efficiency with fin design, but they also allow for increased volume of oil which also maintains a lower temperature.

Of course without using the proper Oils / Coolant, maximum performance and protection cannot be achieved. Many great options are available most places overseas, however we do offer some selection on premium quality from Japan.


Limited Giveaway: HKS 50th Anniversary 50L Folding Container (Special Edition)

Greetings from the RHDJapan blogspot. We have a couple HKS 50th Anniversary 'Tune the Next' 50L folding container boxes that we would like to gift to our friends.
A total of 10pcs will be given away.
3pcs on Facebook
2pcs on X
5pcs on Instagram
Orders that Qualify:
1. Have a currently processing order with HKS Muffler Exhaust System

How to:
Add your currently processing order number with hashtag #TuneTheNext to the comments section within the link of the following platform:

Order numbers posted will be confirmed or denied on the listing. Once offer is up we will post 'Time's Up' for confirmation. Only one per customer.


Upcoming Price Revision: TRUST GReddy Profec

Greetings from the RHDJapan blog. From the beginning of June there will be a price revision on the long-selling series of boost controller from TRUST.

Currently many in stock ready for immediate shipment!


New Release: SARD LSR GT-Wing GR Yaris

Greetings from the RHDJapan blog spot. Exciting new development for the GR Yaris fans. The offset Type L version Mount Set and LSR wing now available as the ultimate all-rounder GT-Wing!


Discontinuation Notification: Nismo Fuel Regulator

Hello from the RHDJapan blogspot!

We have received news that the following long-selling Nismo Fuel Regulator items will be discontinued at the end of May.

We will be providing a pre-discontinuation discount of 7% off on these items, while stocks last!

22670-RR580 - Coupon Code: 170738Special15

22670-RR710 universal 8mm - Coupon Code: 170738Special15

Please confirm compatibility from item listings.


Spring-Time Stock Specials – Tomei Fuel Parts

Tomei Fuel Pressure Regulator and Fittings Set

Get an additional 15% off!

Type L - Coupon Code: 60380Special15

Type S - Coupon Code: 60379Special15

*Limited Availability while stocks last!
**Only 1 per customer

Please confirm compatibility from item listing.

Tomei Fuel Pressure Gauge Meter

Get an additional 15% off!

Coupon Code: 170977Special15

*Limited Availability while stocks last!
**Only 1 per customer

Please confirm compatibility from item listing.

Tomei Fuel Delivery Pipe Denso and Fittings

Get an additional 15% off!

Coupon Code: 291965Special15

*Limited Availability while stocks last!
**Only 1 per customer

Please confirm compatibility from item listing.

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Spring-Time Stock Specials – Trust Greddy Radiator Hose Attachments

Get an additional 15% off!

30mm: Coupon Code: 103919Special15

32mm: Coupon Code: 103920Special15

34mm: Coupon Code: 18703Special15

36mm: Coupon Code: 103921Special15

38mm: Coupon Code: 103922Special15

*Limited Availability while stocks last!
**Only 1 per customer

Please confirm compatibility from item listing.


Spring-Time Stock Specials – Tomei Oil Pan Baffle Plate Stiffener BRZ/GR86

Get an additional 15% off!

Coupon Code: 290776Special15

*Limited Availability while stocks last!
**Only 1 per customer

Please confirm compatibility from item listing.

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