What is in the TS2B Overhaul Kit B for Evo IV to IX kit?

The TS2B Overhaul Kit B for Evo IV to IX kit contains both clutch discs, the center plate, the pressure plate and a set of cover bolts, plus a new clutch cover. Overhaul Kit A has the same parts without the cover, for clutches where the original cover is still in good condition.

Should I choose Overhaul Kit A or Overhaul Kit B?

Choose Kit A when the existing TS cover is in good condition, with no heat damage and a healthy diaphragm, because it costs less and reuses a part that still works. Choose Kit B when the cover shows wear or heat marks, or when the clutch has seen enough use that a full refresh makes sense.

Will this kit rebuild a different OS Giken clutch?

No. This kit is matched to the TS2B clutch, part number MT031-BC3, for the Lancer Evolution IV to IX. Other OS Giken series use different covers, discs and plates, and each has its own overhaul kit, so the kit should always match the clutch part number.

How do I know my clutch needs rebuilding?

The usual signs are slip under full load, an engagement point that has moved, or new judder on take-off. Wear depends heavily on launches, track use and power level, so there is no fixed interval. When any of those signs appear, a rebuild with fresh discs and plates restores the original behavior.

Is a rebuild better than a new clutch?

For an OS Giken clutch that has not been overheated, a rebuild restores the original behavior for less than a new clutch, because the parts that last are kept. If the clutch has been badly overheated, our team can advise whether the TS2B Overhaul Kit B for Evo IV to IX or a full replacement is the better route.

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Description

OS Giken TS2B Overhaul Kit B for Evo IV to IX Mitsubishi 4G63

OS Giken’s TS2B Overhaul Kit B for Evo IV to IX clutches is the complete rebuild for the TS2B twin plate clutch: new discs, center plate, pressure plate and cover bolts, plus a new TS cover with a fresh diaphragm spring. Nothing from the old clamping stack goes back into the car. It is the kit to choose when the original cover has seen enough heat or mileage that reusing it no longer makes sense, and it returns the clutch to the roughly 500 lb-ft rating OS Giken USA gives it. OS Giken USA describes the TS series as the original technology used since the birth of OS Giken, suited to light to medium engine tuning.

Keeping the Clutch Healthy

The TS2B Overhaul Kit B for Evo IV to IX clutches is matched to the TS2B clutch (MT031-BC3). Rebuilding before the clutch slips badly protects the flywheel and cover from heat damage. OS Giken also sells Overhaul Kit A (MT031-BC30A), which reuses a healthy cover for less.

Features

Restores a worn TS2B clutch to full clamping capacity
Matched discs, center plate and pressure plate replaced together
New TS cover with a fresh diaphragm spring
204mm discs to the original TS2B specification

What’s Included

Clutch discs (x2)
Center plate
Pressure plate
Clutch cover
Cover bolt set

Applications

Mitsubishi Lancer Evolution: CN9A / CP9A IV-VI | 1996-2001 | 2.0L 4G63 turbo
Mitsubishi Lancer Evolution: CT9A VII-IX | 2001-2007 | 2.0L 4G63 turbo

Notes

This TS2B Overhaul Kit B for Evo IV to IX kit rebuilds the OS Giken TS2B Clutch for Evo IV to IX and does not fit other OS Giken clutch series
Includes a new cover; Overhaul Kit A (MT031-BC30A) reuses a healthy cover for less
Kit contents are as OS Giken dealers list them for Overhaul Kit B
Installation labor is not included

Frequently Asked Questions

What is in the TS2B Overhaul Kit B for Evo IV to IX kit? The TS2B Overhaul Kit B for Evo IV to IX kit contains both clutch discs, the center plate, the pressure plate and a set of cover bolts, plus a new clutch cover. Overhaul Kit A has the same parts without the cover, for clutches where the original cover is still in good condition.
Should I choose Overhaul Kit A or Overhaul Kit B? Choose Kit A when the existing TS cover is in good condition, with no heat damage and a healthy diaphragm, because it costs less and reuses a part that still works. Choose Kit B when the cover shows wear or heat marks, or when the clutch has seen enough use that a full refresh makes sense.
Will this kit rebuild a different OS Giken clutch? No. This kit is matched to the TS2B clutch, part number MT031-BC3, for the Lancer Evolution IV to IX. Other OS Giken series use different covers, discs and plates, and each has its own overhaul kit, so the kit should always match the clutch part number.
How do I know my clutch needs rebuilding? The usual signs are slip under full load, an engagement point that has moved, or new judder on take-off. Wear depends heavily on launches, track use and power level, so there is no fixed interval. When any of those signs appear, a rebuild with fresh discs and plates restores the original behavior.
Is a rebuild better than a new clutch? For an OS Giken clutch that has not been overheated, a rebuild restores the original behavior for less than a new clutch, because the parts that last are kept. If the clutch has been badly overheated, our team can advise whether the TS2B Overhaul Kit B for Evo IV to IX or a full replacement is the better route.

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 TS2B Overhaul Kit B for Evo IV to IX Mitsubishi 4G63 [MT031-BC30B]

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OS Giken TS2B Overhaul Kit B for Evo IV to IX Mitsubishi 4G63

Keeping the Clutch Healthy

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About OS Giken

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