What else do I need with the R4C Quad Plate Clutch for R34 cars?

The R4C Quad Plate Clutch for R34 GT-R models is push-type and the BNR34 has a pull-type release, so Turn 14 lists OS Giken Movement Alteration Kit NS221-DH50M as required. Order the kit with the clutch and install them together.

How much power will it hold?

OS Giken USA rates the R4C at about 1,400 lb-ft of torque, and OS Giken Japan places the R series in its 700 PS class, the highest in its range. It is designed for heavily built engines in cars that see repeated hard launches.

It is the OS Giken model code. R is the cover series, 4 is the number of discs and C is the 215mm disc size. There is no D suffix; the R series uses the OS Giken floating dampened center hub instead, built to withstand transmission shock.

Is it usable on the street?

It can be driven on the road, but it is a race clutch. Engagement is firm and abrupt compared with a street twin plate, and the solid-hub discs pass more noise and driveline shock. Most owners fit it to cars used mainly at events.

Can it be rebuilt when it wears?

Yes. OS Giken offers Overhaul Kit A for this clutch, with the discs, center plates, pressure plate and cover bolts, and Overhaul Kit B, which adds a new cover. Rebuilding restores full clamping capacity for less than a complete new clutch.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

OS Giken R4C Quad Plate Clutch for R34 Nissan Skyline GT-R

OS Giken’s R4C Quad Plate Clutch for R34 Skyline GT-R models is the strongest clutch OS Giken lists for the BNR34: four 215mm discs in the R series cover, rated by OS Giken USA at about 1,400 lb-ft. It is meant for an RB26DETT built for serious power, typically in a drag, roll-racing or time attack car where the clutch has to survive repeated hard launches. The R series floating center hub is designed to take that kind of transmission shock. The R4C is a push-type clutch, so on the factory pull-type BNR34 release it is installed with OS Giken’s dedicated Movement Alteration Kit.

What Comes With the Install

Turn 14 lists the Movement Alteration Kit for R34 R4C as required with this clutch. It adapts the factory pull-type release to operate the push-type R4C. Plan both parts into the same job, and have the work done by a shop familiar with multi-plate race clutches on the BNR34.

Features

Four 215mm discs for maximum clamping capacity
Rated by OS Giken USA at about 1,400 lb-ft
R series cover with floating center hub construction
Push-type design, installed with the R34 R4C alteration kit
Rebuildable with OS Giken overhaul kits A and B

Applications

Nissan Skyline GT-R: BNR34 | 1999-2002 | 2.6L RB26DETT | with Movement Alteration Kit NS221-DH50M

Notes

This R4C Quad Plate Clutch for R34 GT-R models requires the Movement Alteration Kit for R34 R4C, sold separately
The R3C triple plate clutch for R34 is the three-disc alternative
OS Giken rebuild parts for this clutch are Overhaul Kit A (NS221-DH50A) and Overhaul Kit B (NS221-DH50B)
Installation labor is not included

Frequently Asked Questions

What else do I need with the R4C Quad Plate Clutch for R34 cars? The R4C Quad Plate Clutch for R34 GT-R models is push-type and the BNR34 has a pull-type release, so Turn 14 lists OS Giken Movement Alteration Kit NS221-DH50M as required. Order the kit with the clutch and install them together.
How much power will it hold? OS Giken USA rates the R4C at about 1,400 lb-ft of torque, and OS Giken Japan places the R series in its 700 PS class, the highest in its range. It is designed for heavily built engines in cars that see repeated hard launches.
What does R4C mean? It is the OS Giken model code. R is the cover series, 4 is the number of discs and C is the 215mm disc size. There is no D suffix; the R series uses the OS Giken floating dampened center hub instead, built to withstand transmission shock.
Is it usable on the street? It can be driven on the road, but it is a race clutch. Engagement is firm and abrupt compared with a street twin plate, and the solid-hub discs pass more noise and driveline shock. Most owners fit it to cars used mainly at events.
Can it be rebuilt when it wears? Yes. OS Giken offers Overhaul Kit A for this clutch, with the discs, center plates, pressure plate and cover bolts, and Overhaul Kit B, which adds a new cover. Rebuilding restores full clamping capacity for less than a complete new clutch.

About OS Giken

OS Giken was founded in Okayama, Japan in 1973 by Masaharu Okazaki. It built the TC16 and TC24-B1 DOHC cylinder heads for Nissan L-series engines, began making multi-plate racing clutches in 1982 and started supplying OEM limited-slip differentials in 1983. Development of the Super Lock LSD began in 1997, and of the OS-88 sequential gearbox for the Skyline GT-R in 1998.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

OS Giken R4C Quad Plate Clutch for R34 Nissan Skyline GT-R [NS221-DH5]

Guaranteed Safe Checkout

OS Giken R4C Quad Plate Clutch for R34 Nissan Skyline GT-R

What Comes With the Install

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

Reviews