Which cars does the R3C Clutch for OS-88 Gearbox installations fit?

Turn 14 lists the R3C Clutch for OS-88 Gearbox installations for RB-engined Nissan Skylines running the OS Giken OS-88 sequential gearbox with its 26-spline input. It is not meant for the factory gearbox. Confirm your drivetrain with our team before ordering.

How much power will it hold?

OS Giken USA rates its R3C triple plate clutch at about 1,100 lb-ft of torque, and OS Giken Japan places the R series in its 700 PS class. It is built for heavily modified RB engines in race cars rather than street builds.

It is the OS Giken model code. R is the cover series, OS Giken highest capacity line, 3 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.

Why a triple plate rather than a quad plate?

A triple plate clutch carries less rotating mass and a lower parts count than a quad plate, while still giving far more capacity than a twin plate. With a sequential gearbox the clutch works mostly on launches, so the triple plate suits many OS-88 builds.

Is it usable on the street?

It is a race clutch. Engagement is firm and abrupt, and the solid-hub discs pass more noise and driveline shock than a street clutch. Paired with a sequential gearbox, it is best suited to cars used mainly at the track or at events.

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Description

OS Giken R3C Clutch for OS-88 Gearbox, RB Skyline GT-R 26-Spline Triple Plate

OS Giken’s R3C Clutch for OS-88 Gearbox installations is the triple plate R series race clutch with 26-spline disc hubs, listed by Turn 14 for RB-engined Skylines running OS Giken’s own OS-88 sequential gearbox. OS Giken began developing the OS-88 for the Skyline GT-R in 1998, and this clutch is the matching triple plate option for that drivetrain. The R series is OS Giken’s highest capacity line, designed for cars with a large increase in engine power, with a floating center hub built to take the shock of sequential shifts and hard launches. It suits a dedicated race or time attack Skyline built around the OS-88.

Built for a Sequential Drivetrain

A sequential gearbox shifts faster and harder than an H-pattern, and the clutch is used mainly for launches and pit lane. The R3C answers that with three 215mm discs and the R series floating dampened center hub. OS Giken USA rates its R3C at about 1,100 lb-ft, and OS Giken Japan places the R series in its 700 PS class.

Features

Three 215mm discs with 26-spline hubs
Listed by Turn 14 for the OS Giken OS-88 gearbox
R series cover with floating center hub construction
R3C rated by OS Giken USA at about 1,100 lb-ft
Highest capacity series in the OS Giken range

Applications

Nissan Skyline (RB engine): With OS Giken OS-88 sequential gearbox, 26-spline input

Notes

This R3C Clutch for OS-88 Gearbox installations is listed by Turn 14 for RB-engined Skylines with the OS-88
It is not listed for the factory gearbox; the standard R32 / R33 R3C kit is a separate part
Installation labor is not included

Frequently Asked Questions

Which cars does the R3C Clutch for OS-88 Gearbox installations fit? Turn 14 lists the R3C Clutch for OS-88 Gearbox installations for RB-engined Nissan Skylines running the OS Giken OS-88 sequential gearbox with its 26-spline input. It is not meant for the factory gearbox. Confirm your drivetrain with our team before ordering.
How much power will it hold? OS Giken USA rates its R3C triple plate clutch at about 1,100 lb-ft of torque, and OS Giken Japan places the R series in its 700 PS class. It is built for heavily modified RB engines in race cars rather than street builds.
What does R3C mean? It is the OS Giken model code. R is the cover series, OS Giken highest capacity line, 3 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.
Why a triple plate rather than a quad plate? A triple plate clutch carries less rotating mass and a lower parts count than a quad plate, while still giving far more capacity than a twin plate. With a sequential gearbox the clutch works mostly on launches, so the triple plate suits many OS-88 builds.
Is it usable on the street? It is a race clutch. Engagement is firm and abrupt, and the solid-hub discs pass more noise and driveline shock than a street clutch. Paired with a sequential gearbox, it is best suited to cars used mainly at the track or at events.

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.

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OS Giken R3C Clutch for OS-88 Gearbox, RB Skyline GT-R 26-Spline Triple Plate [NS201-CH51]

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OS Giken R3C Clutch for OS-88 Gearbox, RB Skyline GT-R 26-Spline Triple Plate

Built for a Sequential Drivetrain

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

Reviews