Is an accessory kit required for this EXEDY Hyper Triple Cerametallic Clutch?

Yes. EXEDY sells a Hyper Series Accessory Kit separately for every Hyper Series clutch, and FJAK100 is the kit EXEDY names for this Hyper Triple Cerametallic Clutch on the WRX STI. Order it with the clutch so the parts EXEDY lists for a full installation are ready when the transmission comes out.

How much torque does the Hyper Triple Cerametallic Clutch hold?

EXEDY lists 1,378 lb-ft of clutch torque capacity and about 766 lb-ft at the wheels for FM023SB, with a clamp load of 2,203 lb. That capacity is aimed at a heavily modified WRX STI; a car with mild bolt-ons will not use it and will be happier with a single-disc clutch.

What does a rigid disc mean for engagement?

A rigid disc has no springs in the hub, so it is lighter and transfers torque directly, but engagement is abrupt and driveline noise is higher. EXEDY reserves rigid centers for competition use, and on the WRX STI this clutch suits drag, circuit or rally cars more than daily driving.

Should I choose a triple plate for the WRX STI?

Only if the power demands it. EXEDY rates its triple-plate clutches at about 800 lb-ft at the flywheel against about 500 for its twins, and does not recommend triples for the street. A triple suits a drag or competition WRX STI; a street car with big power is better served by a twin.

Does the kit include a flywheel?

Yes. The kit pairs the clutch with a lightweight chromoly steel flywheel. EXEDY integrates the ring gear teeth into the flywheel rather than pressing on a separate ring, tests its lightweight flywheels to 15,000 to 18,000 rpm and lists them as SFI approved, and the flywheel can be resurfaced at a later service.

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Description

EXEDY Hyper Triple Cerametallic Clutch and Flywheel Kit for Subaru Impreza WRX STI and VA WRX STI (Rigid Disc, SB)

EXEDY’s Hyper Triple Cerametallic Clutch and Flywheel Kit for Subaru Impreza WRX STI and VA WRX STI puts three rigid discs behind the EJ257 for 1,378 lb-ft of clutch torque, per EXEDY. All-wheel-drive launches load a clutch harder than most, and this is the STI unit for drag and rally builds.

Design and Performance

EXEDY uses its T5001 cerametallic compound for heat resistance, and a patented cushion function creates a half-engaged zone that keeps pedal effort lighter than a multi-plate usually allows. The forged aluminum cover is stiffer than a stamped steel one, and EXEDY assembles each multi-plate clutch by hand before checking clamp load and release.

Features

Three cerametallic discs with rigid centers
EXEDY T5001 cerametallic friction material for heat resistance
Purple anodized forged aluminum cover
Lightweight chromoly flywheel with integrated ring gear teeth

Specifications

Disc diameter: 200 mm
Cover type: Pull type
Input spline: 24 tooth, 25.2 mm
Clamp load: 2,203 lb
Clutch torque capacity: 1,378 lb-ft
Torque capacity at the wheels: 766 lb-ft

Applications

Subaru Impreza WRX STI: 2004-2014 | 2.5L EJ257
Subaru Legacy: 2007-2009
Subaru WRX STI: VA | 2017-2020 | 2.5L EJ257

Notes

The EXEDY Hyper Series Accessory Kit is required for installation and is sold separately
EXEDY does not recommend its triple-plate clutches for street use

Frequently Asked Questions

Is an accessory kit required for this EXEDY Hyper Triple Cerametallic Clutch? Yes. EXEDY sells a Hyper Series Accessory Kit separately for every Hyper Series clutch, and FJAK100 is the kit EXEDY names for this Hyper Triple Cerametallic Clutch on the WRX STI. Order it with the clutch so the parts EXEDY lists for a full installation are ready when the transmission comes out.
How much torque does the Hyper Triple Cerametallic Clutch hold? EXEDY lists 1,378 lb-ft of clutch torque capacity and about 766 lb-ft at the wheels for FM023SB, with a clamp load of 2,203 lb. That capacity is aimed at a heavily modified WRX STI; a car with mild bolt-ons will not use it and will be happier with a single-disc clutch.
What does a rigid disc mean for engagement? A rigid disc has no springs in the hub, so it is lighter and transfers torque directly, but engagement is abrupt and driveline noise is higher. EXEDY reserves rigid centers for competition use, and on the WRX STI this clutch suits drag, circuit or rally cars more than daily driving.
Should I choose a triple plate for the WRX STI? Only if the power demands it. EXEDY rates its triple-plate clutches at about 800 lb-ft at the flywheel against about 500 for its twins, and does not recommend triples for the street. A triple suits a drag or competition WRX STI; a street car with big power is better served by a twin.
Does the kit include a flywheel? Yes. The kit pairs the clutch with a lightweight chromoly steel flywheel. EXEDY integrates the ring gear teeth into the flywheel rather than pressing on a separate ring, tests its lightweight flywheels to 15,000 to 18,000 rpm and lists them as SFI approved, and the flywheel can be resurfaced at a later service.

About EXEDY

EXEDY Corporation of Neyagawa, Osaka, traces its clutch business back to 1923 and built its name as Daikin Clutch before adopting the EXEDY brand. It is a leading original-equipment maker of clutches and powertrain parts, and its racing line supplies Hyper Series multi-plate clutches for drag, circuit and rally use. EXEDY Globalparts Corporation, its wholly owned US subsidiary, supports the range in North America.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

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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EXEDY Hyper Triple Cerametallic Clutch and Flywheel Kit for Subaru Impreza WRX STI and VA WRX STI (Rigid Disc, SB) [FM023SB]

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EXEDY Hyper Triple Cerametallic Clutch and Flywheel Kit for Subaru Impreza WRX STI and VA WRX STI (Rigid Disc, SB)

Design and Performance

Features

Specifications

Applications

Notes

Frequently Asked Questions

About EXEDY

Reviews