Does the TS2B Clutch for GDB GRB STI need anything else to fit?

Yes. The TS2B Clutch for GDB GRB STI is a push-type clutch and the GDB and GRB Impreza WRX STI uses a pull-type release from the factory, so it is installed with the OS Giken Movement Alteration Kit for GDB GRB STI (SB041-ALT). Turn 14 names SB041-BC30M, a number OS Giken does not sell; OS Giken USA sells this kit as SB041-ALT.

How much power will the TS2B hold?

OS Giken USA rates the TS2B Clutch for GDB GRB STI at about 500 lb-ft of torque, and OS Giken Japan places the TS range in its 500 PS class. For more power than that, a higher capacity OS Giken series is the better match.

It is the OS Giken model code. TS is the cover series, 2 is the number of discs and B is the 204mm disc size. There is no D, so the discs have solid hubs for direct engagement. The same code system runs across the whole OS Giken clutch range.

Is the TS2B easy to drive on the street?

The pressed-steel TS cover is chosen to keep pedal effort moderate for its capacity. Engagement is firmer than a factory clutch, but the TS series is built for cars that are still driven on the road. OS Giken USA says most tuners will find the TS series suits their power figures.

Can the TS2B Clutch for GDB GRB STI be rebuilt?

Yes. OS Giken sells Overhaul Kit A (SB041-BC30A), with new discs, center plates, pressure plate and cover bolts, and Overhaul Kit B (SB041-BC30B), which adds a new cover. Our team can order either kit when the clutch needs service. Kit B is the choice when the cover is also worn.

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Description

OS Giken TS2B Clutch for GDB GRB STI Subaru Impreza, Twin Plate

OS Giken’s TS2B Clutch for GDB GRB STI models is the twin plate clutch from OS Giken’s TS series, built around two 204mm discs with solid hubs and a stamped steel cover that keeps pedal effort moderate for its capacity. OS Giken USA rates it at about 500 lb-ft, and OS Giken designed the TS2B with supercharged and turbocharged engines in mind. 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.

Where It Sits in the Range

The TS2B Clutch for GDB GRB STI cars is one of several OS Giken clutches listed for the GDB and GRB Impreza WRX STI. The R3C (about 1,100 lb-ft), TR2CD (about 800 lb-ft) and GT2CD (about 650 lb-ft) cover other points in the range, so the choice comes down to power, pedal feel and how the car is used.

How OS Giken Japan Lists It

OS Giken Japan lists the TS2B for the GDB and GRB Impreza EJ20T with release conversion parts required. Our team will confirm the release parts before the order is placed.

Features

Two 204mm discs with solid hubs
Stamped steel TS cover for a moderate pedal
Rated by OS Giken USA at about 500 lb-ft
Designed with supercharged and turbocharged engines in mind
Push-type design, installed with the Movement Alteration Kit for GDB GRB STI
Rebuildable with OS Giken overhaul kits

Applications

Subaru Impreza WRX STI: GDB | 2004-2007 | 2.5L EJ257 turbo (2.0L EJ207 in Japan)
Subaru Impreza WRX STI: GRB / GRF | 2008-2014 | 2.5L EJ257 turbo (2.0L EJ207 in Japan)

Notes

This TS2B Clutch for GDB GRB STI installation requires the OS Giken Movement Alteration Kit for GDB GRB STI, sold separately
OS Giken rebuild parts for this clutch are Overhaul Kit A (SB041-BC30A) and Overhaul Kit B (SB041-BC30B)
Installation labor is not included

Frequently Asked Questions

Does the TS2B Clutch for GDB GRB STI need anything else to fit? Yes. The TS2B Clutch for GDB GRB STI is a push-type clutch and the GDB and GRB Impreza WRX STI uses a pull-type release from the factory, so it is installed with the OS Giken Movement Alteration Kit for GDB GRB STI (SB041-ALT). Turn 14 names SB041-BC30M, a number OS Giken does not sell; OS Giken USA sells this kit as SB041-ALT.
How much power will the TS2B hold? OS Giken USA rates the TS2B Clutch for GDB GRB STI at about 500 lb-ft of torque, and OS Giken Japan places the TS range in its 500 PS class. For more power than that, a higher capacity OS Giken series is the better match.
What does TS2B mean? It is the OS Giken model code. TS is the cover series, 2 is the number of discs and B is the 204mm disc size. There is no D, so the discs have solid hubs for direct engagement. The same code system runs across the whole OS Giken clutch range.
Is the TS2B easy to drive on the street? The pressed-steel TS cover is chosen to keep pedal effort moderate for its capacity. Engagement is firmer than a factory clutch, but the TS series is built for cars that are still driven on the road. OS Giken USA says most tuners will find the TS series suits their power figures.
Can the TS2B Clutch for GDB GRB STI be rebuilt? Yes. OS Giken sells Overhaul Kit A (SB041-BC30A), with new discs, center plates, pressure plate and cover bolts, and Overhaul Kit B (SB041-BC30B), which adds a new cover. Our team can order either kit when the clutch needs service. Kit B is the choice when the cover is also worn.

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 Clutch for GDB GRB STI Subaru Impreza, Twin Plate [SB041-BC3]

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OS Giken TS2B Clutch for GDB GRB STI Subaru Impreza, Twin Plate

Where It Sits in the Range

How OS Giken Japan Lists It

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

Reviews