Will the EXEDY Stage 2 Cerametallic Clutch fit a 1991 Miata?

Yes. Turn 14 lists the 10903 for the 1990-1993 Miata with the 1.6-liter engine, including the 1991 SE and the 1993 LE. The kit uses a 200 mm disc and the 22-tooth, 24.3 mm input spline of the five-speed gearbox.

Thin or thick disc for a 1.6 Miata?

EXEDY rates both 1.6-liter kits at 152 lb-ft at the wheels. The thin-disc 10903 revs more freely, while the thick-disc 10950 carries more heat for repeated launches. Turn 14 lists the thick disc with the later 1.8-liter flywheel, so the thin disc is the simpler swap.

How much power will this Miata clutch hold?

EXEDY rates the 10903 at 189 lb-ft of torque capacity at the flywheel and 152 lb-ft at the wheels, from 1,169 lb of clamp load. That is well beyond a stock B6 and covers a turbocharged 1.6 on moderate boost.

Is a cerametallic clutch too much for a street Miata?

On a stock car it is more than needed. The EXEDY Stage 2 Cerametallic Clutch engages firmly and can chatter on gentle starts, which is noticeable in a light car. It suits a turbocharged, autocross or track Miata where an organic disc would fade.

What else should be replaced with a Miata clutch?

The release bearing and pilot bearing, and the flywheel surface, because each needs the transmission out. Inspect the rear main seal and the clutch slave cylinder at the same time, since both are common sources of leaks on older Miatas of this age.

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Description

EXEDY Stage 2 Cerametallic Clutch Kit for NA Mazda Miata 1.6L (Thin Disc)

EXEDY’s Stage 2 Cerametallic Clutch Kit for NA Mazda Miata 1.6L keeps the factory 200 mm clutch size of the early B6 cars while moving to a thin cerametallic disc that resists the heat of autocross and track days. EXEDY rates it at 189 lb-ft at the flywheel, enough for a turbocharged 1.6, and the thin disc keeps the rotating mass of a light car low.

Design and Performance

A ductile-cast cover applies 1,169 lb of clamp load to a 200 mm thin cerametallic disc on the 22-tooth, 24.3 mm Miata spline, for 237 lb-ft of clutch torque by EXEDY figures. The thin disc revs freely with the B6, and unlike the thick-disc 10950 it is not listed by Turn 14 as needing the later 1.8-liter flywheel.

Features

EXEDY Stage 2 Cerametallic Clutch with a thin disc
Low-inertia disc for a light, quick-revving car
Ductile-cast pressure plate cover
Sprung center damper to reduce driveline shock
SFI 1.1 compliant, according to EXEDY

Specifications

Disc diameter: 200 mm
Input spline: 22 tooth, 24.3 mm
Clamp load: 1,169 lb
Clutch torque capacity: 237 lb-ft
Torque capacity at the flywheel: 189 lb-ft
Torque capacity at the wheels: 152 lb-ft

Applications

Mazda Miata: NA | 1990-1993 | 1.6L L4 (Base, SE and LE)

Notes

The thick-disc version for the same car, which Turn 14 lists with the later 1.8L flywheel, is the EXEDY Stage 2 Cerametallic Clutch Kit for the NA Miata 1.6L with thick disc

Frequently Asked Questions

Will the EXEDY Stage 2 Cerametallic Clutch fit a 1991 Miata? Yes. Turn 14 lists the 10903 for the 1990-1993 Miata with the 1.6-liter engine, including the 1991 SE and the 1993 LE. The kit uses a 200 mm disc and the 22-tooth, 24.3 mm input spline of the five-speed gearbox.
Thin or thick disc for a 1.6 Miata? EXEDY rates both 1.6-liter kits at 152 lb-ft at the wheels. The thin-disc 10903 revs more freely, while the thick-disc 10950 carries more heat for repeated launches. Turn 14 lists the thick disc with the later 1.8-liter flywheel, so the thin disc is the simpler swap.
How much power will this Miata clutch hold? EXEDY rates the 10903 at 189 lb-ft of torque capacity at the flywheel and 152 lb-ft at the wheels, from 1,169 lb of clamp load. That is well beyond a stock B6 and covers a turbocharged 1.6 on moderate boost.
Is a cerametallic clutch too much for a street Miata? On a stock car it is more than needed. The EXEDY Stage 2 Cerametallic Clutch engages firmly and can chatter on gentle starts, which is noticeable in a light car. It suits a turbocharged, autocross or track Miata where an organic disc would fade.
What else should be replaced with a Miata clutch? The release bearing and pilot bearing, and the flywheel surface, because each needs the transmission out. Inspect the rear main seal and the clutch slave cylinder at the same time, since both are common sources of leaks on older Miatas of this age.

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

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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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EXEDY Stage 2 Cerametallic Clutch Kit for NA Mazda Miata 1.6L (Thin Disc) [10903]

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EXEDY Stage 2 Cerametallic Clutch Kit for NA Mazda Miata 1.6L (Thin Disc)

Design and Performance

Features

Specifications

Applications

Notes

Frequently Asked Questions

About EXEDY

Reviews