Who should choose the STR2CD Clutch for R34 cars?

The STR2CD Clutch for R34 GT-R models suits a BNR34 that sees track days or racing as well as road driving. OS Giken USA recommends its STR lineup as the starting point for motorsport and dual-purpose cars, and the lighter pedal makes it easier to live with on the street.

How much power will it hold?

OS Giken USA rates the STR2CD at about 575 lb-ft of torque, and OS Giken Japan places the STR series in its 400 PS class. For substantially more power, the R series triple and quad plate clutches are the next step.

What does STR2CD mean?

It is the OS Giken model code. STR is the cover series, 2 is the number of discs, C is the 215mm disc size and D means the discs have damped hubs that soften driveline shock and protect the gearbox.

Will it be noisy on the street?

OS Giken USA describes the STR2CD as a quiet and reliable clutch set. The damped hubs absorb much of the driveline shock that makes twin plate clutches rattle, although engagement is still firmer than a factory single plate. Our team can tell you more.

How long does it last before a rebuild?

OS Giken USA says the STR2CD will go years before needing an overhaul, depending on power and use. When it does, Overhaul Kit A replaces the discs, center plate, pressure plate and bolts, and Overhaul Kit B adds a new cover.

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Description

OS Giken STR2CD Clutch for R34 Nissan Skyline GT-R, Twin Plate

OS Giken’s STR2CD Clutch for R34 Skyline GT-R models is the twin plate kit OS Giken points to first for a BNR34 that is raced or driven hard on both road and track. The STR series came from OS Giken’s endurance racing program, where drivers asked for a lighter clutch because a heavy pedal causes fatigue over a long stint, and it keeps that lighter pedal while holding high power. The STR2CD adds damped hubs to its two 215mm discs, which absorb driveline shock and spare the gearbox. OS Giken USA rates it at about 575 lb-ft and describes it as quiet and reliable, going years between overhauls.

OS Giken Starting Point for Dual-Purpose Cars

OS Giken USA recommends starting with the STR lineup for pure motorsport use and for dual-purpose cars. If the R34 is mainly a show or street car, the GT2CD Grand Touring clutch focuses on smoothness instead, and for far higher power the R series is the next step up.

Features

Two 215mm discs with damped hubs to absorb driveline shock
STR cover designed for a lighter pedal than stock
Rated by OS Giken USA at about 575 lb-ft
Described by OS Giken USA as quiet and long-lived
Rebuildable with OS Giken overhaul kits A and B

Applications

Nissan Skyline GT-R: BNR34 | 1999-2002 | 2.6L RB26DETT

Notes

This STR2CD Clutch for R34 GT-R models is listed for the RB26DETT-powered BNR34
OS Giken rebuild parts for this clutch are Overhaul Kit A (NS221-BJ60A) and Overhaul Kit B (NS221-BJ60B)
Installation labor is not included

Frequently Asked Questions

Who should choose the STR2CD Clutch for R34 cars? The STR2CD Clutch for R34 GT-R models suits a BNR34 that sees track days or racing as well as road driving. OS Giken USA recommends its STR lineup as the starting point for motorsport and dual-purpose cars, and the lighter pedal makes it easier to live with on the street.
How much power will it hold? OS Giken USA rates the STR2CD at about 575 lb-ft of torque, and OS Giken Japan places the STR series in its 400 PS class. For substantially more power, the R series triple and quad plate clutches are the next step.
What does STR2CD mean? It is the OS Giken model code. STR is the cover series, 2 is the number of discs, C is the 215mm disc size and D means the discs have damped hubs that soften driveline shock and protect the gearbox.
Will it be noisy on the street? OS Giken USA describes the STR2CD as a quiet and reliable clutch set. The damped hubs absorb much of the driveline shock that makes twin plate clutches rattle, although engagement is still firmer than a factory single plate. Our team can tell you more.
How long does it last before a rebuild? OS Giken USA says the STR2CD will go years before needing an overhaul, depending on power and use. When it does, Overhaul Kit A replaces the discs, center plate, pressure plate and bolts, and Overhaul Kit B adds a new cover.

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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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.

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OS Giken STR2CD Clutch for R34 Nissan Skyline GT-R, Twin Plate [NS221-BJ6]

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OS Giken STR2CD Clutch for R34 Nissan Skyline GT-R, Twin Plate

OS Giken Starting Point for Dual-Purpose Cars

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

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