Does the STR2CD Clutch for JZA70 need a Movement Alteration Kit?

Turn 14 lists no separate kit for the STR2CD Clutch for JZA70 (TY021-BJ6). OS Giken Japan lists its 1JZ-GTE STR clutch with the release conversion parts included, which is why no kit is named. Our team will confirm what comes in the box before the order is placed.

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 more power than that, the next OS Giken series up is the better match.

What does STR2CD mean?

It is the OS Giken model code. STR is the cover series, 2 is the number of discs and C is the 215mm disc size. D means the discs have damped hubs that soften driveline shock. Our team can help with any questions.

Is it easy to drive on the street?

OS Giken designed the STR series to hold high capacity with a relatively light pedal, after its endurance racers asked for less pedal effort over long races. The damped hubs absorb drivetrain shock, and OS Giken USA recommends the STR range first for dual-purpose cars.

Does it fit the Chaser, Mark II or Soarer?

OS Giken Japan lists the STR2CD for the 1JZ-GTE in the JZA70 Supra, the JZX90, JZX100 and JZX110 Chaser and Mark II, and the JZZ30 Soarer. Turn 14 lists this part number for the JZA70 Supra, so our team will confirm the release parts for your chassis before the order is placed.

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Description

OS Giken STR2CD Clutch for JZA70 Toyota Supra 1JZ-GTE, Twin Plate

OS Giken’s STR2CD Clutch for JZA70 Supra models comes from the STR series, which OS Giken developed after its endurance racers asked for a lighter clutch pedal. Two 215mm discs with damped hubs sit under an STR cover, and OS Giken USA rates the clutch at about 575 lb-ft. OS Giken USA describes the STR2CD as quiet and reliable, able to go years between overhauls, and recommends the STR series first for motorsport and dual-purpose cars, which makes it a natural fit for a 1JZ-GTE that does both.

A Dual-Purpose Starting Point

The STR2CD Clutch for JZA70 cars sits between the street-focused Grand Touring clutches and the track-focused TR series. The GT2CD puts smooth engagement first, while the TR2CD adds a billet aluminum cover and a rating of about 800 lb-ft for harder use.

How It Is Listed

Turn 14 titles TY021-BJ6 for the JZX90 and JZX100 Chaser and Mark II, while OS Giken USA lists it for the JZA70 Supra. OS Giken Japan lists the STR2CD for the 1JZ-GTE in all of them, plus the JZZ30 Soarer, with the release conversion parts included in its Japanese listing.

Features

Two 215mm discs with damped hubs
STR cover built for a relatively light pedal
Rated by OS Giken USA at about 575 lb-ft
Rebuildable with OS Giken overhaul kits

Applications

Toyota Supra: JZA70 | 1990-1993 | 2.5L 1JZ-GTE twin turbo, R154 five-speed
Toyota Chaser and Mark II: JZX90, JZX100, JZX110 | 1992-2004 | 2.5L 1JZ-GTE twin turbo, as listed by OS Giken Japan
Toyota Soarer: JZZ30 | 1991-2000 | 2.5L 1JZ-GTE twin turbo, as listed by OS Giken Japan

Notes

OS Giken Japan notes that the factory 1JZ-GTE flywheel bolts must be modified to suit this clutch, or OS Giken flywheel bolts used instead
Turn 14 lists no separate Movement Alteration Kit for this clutch; our team will confirm the release parts in the box before the order is placed
OS Giken rebuild parts for this clutch are Overhaul Kit A (TY021-BJ60A) and Overhaul Kit B (TY021-BJ60B)
Installation labor is not included

Frequently Asked Questions

Does the STR2CD Clutch for JZA70 need a Movement Alteration Kit? Turn 14 lists no separate kit for the STR2CD Clutch for JZA70 (TY021-BJ6). OS Giken Japan lists its 1JZ-GTE STR clutch with the release conversion parts included, which is why no kit is named. Our team will confirm what comes in the box before the order is placed.
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 more power than that, the next OS Giken series up is the better match.
What does STR2CD mean? It is the OS Giken model code. STR is the cover series, 2 is the number of discs and C is the 215mm disc size. D means the discs have damped hubs that soften driveline shock. Our team can help with any questions.
Is it easy to drive on the street? OS Giken designed the STR series to hold high capacity with a relatively light pedal, after its endurance racers asked for less pedal effort over long races. The damped hubs absorb drivetrain shock, and OS Giken USA recommends the STR range first for dual-purpose cars.
Does it fit the Chaser, Mark II or Soarer? OS Giken Japan lists the STR2CD for the 1JZ-GTE in the JZA70 Supra, the JZX90, JZX100 and JZX110 Chaser and Mark II, and the JZZ30 Soarer. Turn 14 lists this part number for the JZA70 Supra, so our team will confirm the release parts for your chassis before the order is placed.

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

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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 JZA70 Toyota Supra 1JZ-GTE, Twin Plate [TY021-BJ6]

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OS Giken STR2CD Clutch for JZA70 Toyota Supra 1JZ-GTE, Twin Plate

A Dual-Purpose Starting Point

How It Is Listed

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

Reviews