What does the Movement Alteration Kit for JZA70 R4C do?

The Movement Alteration Kit for JZA70 R4C adapts the pull-type clutch release the JZA70 Supra had from the factory so it can operate the push-type OS Giken R4C clutch. Without it, the factory release system cannot work with that clutch.

Which clutch is it for?

Turn 14 lists this kit as required with the OS Giken R4C, part number TY021-DH5. Other OS Giken clutches for the JZA70 Supra are listed with their own kits, so match the kit to the clutch part number you are installing.

Can I use it with another brand of clutch?

No. OS Giken states that its Movement Alteration Kits are designed to work with OS Giken clutches, and that using one in an unintended application can cause clutch components to fail. Use it only with the clutch it is listed for.

Should it be installed with the clutch?

Yes. The kit changes how the release system operates, so it goes in during the same job as the clutch. Have both fitted by a shop familiar with multi-plate clutches, following the instructions OS Giken supplies with the parts. Our team can help with any questions.

Does it fit the MA70 Supra?

No. This kit is listed for the 1JZ-GTE JZA70 with the R154 gearbox and the OS Giken R4C. The 7M-GTE MA70 has its own OS Giken Movement Alteration Kits, so match the kit to both the car and the clutch part number.

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Description

OS Giken Movement Alteration Kit for JZA70 R4C Clutch, Toyota Supra 1JZ-GTE

OS Giken’s Movement Alteration Kit for JZA70 R4C clutch installs is the conversion that lets OS Giken’s R4C quad plate race clutch, a push-type design, work with the pull-type clutch release the 1JZ-GTE JZA70 Supra had from the factory. With a pull-type system the release bearing is drawn away from the engine to free the clutch; a push-type clutch is released by pressing toward it. The two cannot work together without changing how the release operates, and this kit is the part OS Giken and Turn 14 list for that job when the R4C goes into a JZA70.

Why JZA70 Supra Owners Need It

The JZA70 Supra left the factory with a pull-type clutch release, and the R4C is a push-type OS Giken clutch. Turn 14 lists this kit as required with it. OS Giken designs its Movement Alteration Kits to work with OS Giken clutches only and warns that use in an unintended application can cause clutch components to fail.

Features

Lets a push-type OS Giken R4C run on the factory pull-type release
Listed by Turn 14 as required with the TY021-DH5
Designed to work with OS Giken clutches only
Installed together with the clutch

Applications

Toyota Supra: JZA70 | 1990-1993 | 2.5L 1JZ-GTE, R154 | with OS Giken R4C clutch

Notes

This Movement Alteration Kit for JZA70 R4C install is required with the OS Giken R4C Clutch for JZA70 Toyota Supra, sold separately
OS Giken designs this kit for its own clutches only
The photo is OS Giken USA’s image of a JZA70 Movement Alteration Kit and is representative; the kit supplied is the one listed for this clutch
Installation labor is not included

Frequently Asked Questions

What does the Movement Alteration Kit for JZA70 R4C do? The Movement Alteration Kit for JZA70 R4C adapts the pull-type clutch release the JZA70 Supra had from the factory so it can operate the push-type OS Giken R4C clutch. Without it, the factory release system cannot work with that clutch.
Which clutch is it for? Turn 14 lists this kit as required with the OS Giken R4C, part number TY021-DH5. Other OS Giken clutches for the JZA70 Supra are listed with their own kits, so match the kit to the clutch part number you are installing.
Can I use it with another brand of clutch? No. OS Giken states that its Movement Alteration Kits are designed to work with OS Giken clutches, and that using one in an unintended application can cause clutch components to fail. Use it only with the clutch it is listed for.
Should it be installed with the clutch? Yes. The kit changes how the release system operates, so it goes in during the same job as the clutch. Have both fitted by a shop familiar with multi-plate clutches, following the instructions OS Giken supplies with the parts. Our team can help with any questions.
Does it fit the MA70 Supra? No. This kit is listed for the 1JZ-GTE JZA70 with the R154 gearbox and the OS Giken R4C. The 7M-GTE MA70 has its own OS Giken Movement Alteration Kits, so match the kit to both the car and the clutch part number.

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 Movement Alteration Kit for JZA70 R4C Clutch, Toyota Supra 1JZ-GTE [TY021-DH50M]

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OS Giken Movement Alteration Kit for JZA70 R4C Clutch, Toyota Supra 1JZ-GTE

Why JZA70 Supra Owners Need It

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

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