|Exedy Performance Clutch Kits
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Stage 1 Kits Stage 2 Kits Stage 3 Kits Stage 4 Kits Stage 5 Kits
Speed Pros Clutch and Performance, offers Performance Clutch Kits
manufactured by Exedy, the original equipment providers for a major
portion of the Japanese import car market.
Stage 1 - Single Plate Organic:
EXEDY Racing clutches with organic friction materials use only premium friction
materials that are resistant to slippage and burst. Increased clamp loads give the
necessary capacity to handle modified engines.
The drive-ability will be like a stock clutch. Pedal efforts will be higher because of
the higher clamp loads. All of our clutch discs have high capacity spring center
dampers to reduce the drive train shock and impact.
Stage 2 - Single Plate Cerametallic:
EXEDY performance cerametallic clutches are designed to handle the abuse of
high power modified engines. Our cerametallic friction material can handle much
more slippage than stock type disc assemblies without slipping and fading.
All EXEDY performance cerametallic clutch discs have spring center dampers to
reduce the impact and shock loads put into the drive train. This protects the
transmission and the rest of the drive line system.
We offer two types of cerametallic discs -normal thickness and reduced thickness.
The reduced thickness (thin cerametallic) discs offer greatly reduced inertia to
improve shift efforts, make for faster shifting, and improve synchro durability.
These discs are approximately 1/2 the thickness of a stock disc.
The normal thickness (thick cerametallic) discs have better heat capacity and
therefore better durability in demanding applications such as all wheel drive. Even
with the normal thickness, our three puck cerametallic discs still typically have
less inertia than a stock disc.
With any cerametallic clutch system, there will be some compromise of start up
driveability as compared to a stock clutch (chatter on light throttle, low rpm start
up). This characteristic is generally felt to be acceptable in modified performance
cars. Drivers of cerametallic clutches on the street should be warned not to "ride
the clutch" to try to reduce the chatter as this will greatly increase the wear.
Stage 3 - Hyper Single Clutch:
The Exedy Hyper Single Clutch is engineered to optimize performance for cars
that are moderately modified, but do not require the clutch capacity of a
multi-plate clutch. Similar to our multi-plate clutches, it has a forged aluminum
cover that is anodized purple. The aluminum cover is stiffer than a stamped cover
and therefore allows a higher lever ratio to maintain the pedal efforts at a
All Exedy Hyper Clutches come with a steel flywheel and a 6-puck cerametallic
facing, spring center damper disc assembly. The disc is generally smaller and
thinner than the OEM disc making for lower inertia and therefore quicker, easier
shifting and less wear and tear on the transmission synchros. The higher clamp
load and cerametallic friction facings give approximately twice the holding torque
of the OEM clutch and generally higher than other single plate clutches.
As with all cerametallic clutches, the street driveability may be marginal due to
chattering and harsh engagement characteristics.
An additional feature of the pressure plate is a series of turbine-like, air flow
enhancing vanes that keep the clutch cooler under extreme operating conditions
to improve wear life.
Stage 4 & 5 - Multi Plate Clutch:
For high-powered applications, EXEDY offers twin and triple Multi-Plate Clutches.
These are designed for hot street action as well as drag, road and rally racing.
The twin plate clutches are rated for above 500hp to 750hp. The triple plate
clutches are rated for up to and over 1000hp (for drag race applications). Twins
come as with both spring damper discs and solid discs. Triples are all solid discs.
All of our multi-plate clutches come with a lightweight, chrome moly steel
flywheel and the famous purple anodized forged aluminum clutch cover.
Depending on the application, we have both strap drive and lug drive models. All
have T5001 cerametallic friction materials for extreme heat resistance.
Engine modifications e.g.. cam-timing-turbo modifications etc. cause engine
pulsation and vibrations. These vibrations can cause clutch rattle when the clutch
pedal is depressed by movement on the intermediate separator plate in some
applications. These noises will in no way affect the performance of the Exedy
Multi Plate Clutch. This rattle is well accepted in the performance industry where
engine modifications have been carried out.
|Exedy Clutch kits include:
• Pressure Plate
• Clutch Disk
• Release Bearing
• Pilot Bearing (where applicable)
• Alignment tool.
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