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Stealth Auto

UUC Performance Clutches

Performance - Transmission & Shifting
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Upgrade your clutch to a UUC Kevlar, Cerametallic, Organic or Iron clutch kit. Improved performance and durability. ... learn more
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Priced From: $535 to $879

 
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buildINSTALLATION DIFFICULTY: PROFESSIONAL
Professional Installation Recommended
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Product Details

UUC Performance Clutches

Product Introduction

Upgrade your clutch to a UUC Kevlar, Cerametallic, Organic or Iron clutch kit.

Features and Benefits Of This Product

The selection of the correct clutch for the intended application is critical to good operation, including the characteristics of (but not limited to:

clutch feel
operating temperature range
wear characteristics / durability
clamping force
break-in period
Quite often, the first impulse is to get "too much" clutch. This is often a very big mistake, as there will be compromises in some or all of the operational features listed above.

The first step in identifying what clutch to get is dependent on the characteristics of the car. Ask these questions:

How much power does the car make?
How is it used? Street driving or track use? If for racing, what kind of racing?
As we are dealing with BMW applications here, let's use an widely-understood example - the 1992-2004 6-cylinder 3-series. Over this 12 year period comprising two different chassis, we are still dealing with virtually the same fundamental engine and transmission designs. Power ranges from around 190hp to 333hp. Typical bolt-on modifications bring many of the early models up to the 215hp-260hp range and later models around 350hp. Extensive modifications including supercharging or turbocharging bring power to the 350hp-450hp range, with some examples in the 500hp-600hp range. The typical BMW enthusiast uses the car primarily for sporty street driving, and the occasional auto-x or track day. The 3-series is also popular as a heavily-tracked car and dedicated race car. Some see time spent drag racing, whether occasionally or as dedicated drag racers.

So it is apparent that we have a broad range of power and use to contend with.

Available Options

Presented in increasing "aggressiveness", here is a brief overview of clutch compounds, their power handling, and other characteristics:
(note that hp figures are generalized, pressure plate clamping force and torque curves are additional factors)

organic
CHARACTERISTICS
Metal-fiber woven into "organic" (actually CF aramid with other materials), original-equipment style. Known for smooth engagement, long life, broad operating temperature, minimal-to-no break in period. Will take hard use, somewhat intolerant of repeated abuse (will overheat). Will return to almost full operational condition if overheated. Material is dark brown or black with visible metal fibers.
USE Street-driven cars up to 400hp, auto-x and track use.

Kevlar
CHARACTERISTICS
A high-durability material more resistant to hard use. Engagement is similar to organic, but may glaze slightly in stop-and-go traffic, resulting in slippage until worn clean when used hard again. Higher temp range in general, but can be ruined from overheating - will not return to original characteristics if "cooked". Has a break-in period of 500-1000 miles during which slippage may occur. Care must be taken during this period not to overheat from excessive slipping. Material is uniform yellow/green and may look slightly fuzzy when new.
USE Street-driven track cars up to 500hp, auto-x and heavy track use. Will take hard use, intolerant of abuse (will overheat and not recover completely). Due to the unforgiving nature of Kevlar, it is not recommended for street cars, especially those that see frequent stop-and-go traffic which will cause surface glazing of the clutch.

Segmented Kevlar
CHARACTERISTICS
Same material and characteristics as solid kevlar above, but segmented (blocks or sections missing) for better heat dissipation. New generation of kevlar offered by UUC is resistant to glazing and is an excellent choice for smooth operation in high-powered cars or those equipped with SMG transmissions.
USE Street-driven track cars up to 650hp, auto-x, and heavy track use.

Hybrid Carbon/Ceramic/Organic
CHARACTERISTICS
Organic material on one side and a segmented carbon or ceramic material on the other. The idea is that the organic side will help smooth the engagement, reducing the shuddering from the segmented side. Engagement is same as organic, but still with shuddering. Temperature and hp range is identical to organic. Carbon/ceramic side will wear flywheel or pressure plate surface faster and will wear out faster in traffic situations. Material is organic on one side (described above) and segmented or completely separate pucks (described below) on the other.
USE Can be used in same situations as standard organic. The "hybrid" design appears to be more of a marketing gimmick rather than an actual performance advantage. Some brands are poorly designed and wear unevenly due to flexation of the clutch disk. For examples of hybrid failure, click here.

Carbon/Ceramic/Cerametallic
CHARACTERISTICS
Very high temperature materials, usually only found on multi-puck disks. Will accommodate 500hp+ Engagement is more abrupt. Will wear flywheel surface faster, especially in traffic situations. Carbon is slightly more durable and flywheel-friendly, ceramic has a higher temp range. Multi-puck design may result in slight shuddering or "stepped" engagement when used in traffic situations, although many users report completely acceptable operation. There may be a sound during engagement as is expected of this material. Color is any of several light hues - gray, pink, brown.
USE Street/strip applications for drag-racing and heavy track use cars up to 500hp. Will take very hard use, suitable for extreme-clamping applications.

Sintered Iron
CHARACTERISTICS
Extremely high temperature material. Will accommodate 700hp+ Engagement is on or off. Requires special flywheel surface. Material is metallic gray.
USE Strictly for high-horsepower endurance racing. With correct pressure plate, capable of extremely high clamping force. Engagement is like a switch, either on or off. Does not work well when cold. High-durability flywheel surface required, standard flywheels will be destroyed quickly.

Back to our original question, how to choose? The answer depends on the answers to the two basic questions asked earlier regarding intended use of the car and power output. Based on the answers, this gauge will help the decision:



To repeat the important point, do not buy more clutch than you need. A simple organic disk will handle a wide variety of use - including street use, auto-x, and even true racing. In fact, SCCA ITS racing rules require a standard OE-spec organic disk. UUC has tested organic disks to reliably handle up to 475hp in long-term street use. M3s regularly run through several auto-x seasons without problems.

A kevlar disk is a good choice for a heavily-tracked or road-raced cars, especially with forced induction.

Carbon/ceramic should be left to high-power cars that see lots of drag racing, or are dedicated track/drag cars.

Sintered iron clutch disks are strictly for endurance racing.

Installation Notes

Installation Difficulty: PROFESSIONAL (Professional Installation Recommended)

Complimentary or Alternate Products

Mechunik Wheel Spacers UUC Clutch Delay Valve Delete + Stainless Steel Clutch Lines Mechunik Quick Shift Clutch Stop Mechunik Strut Bars

This Product Fits
(See PRICES & ORDERING tab above for clearer detail)

    Warranty + Satisfaction Guarantee

    Order with confidence! If you are not completely satisfied with your purchase, you may return it for exchange or refund. This product carries a 1 year manufacturers warranty. See our terms of sale for full details.

    Notes / Warnings

    YOU MUST REPLACE YOUR CLUTCH DELAY VALVE

    Please check your local laws for ensure legality when using this product on public roads and highways. In areas where this product is not legal for road use it is sold strictly for off-road, track or show use only.

    Installation: PROFESSIONAL - Professional Installation Recommended

    Manufactured By:

    Product Reviews

    Customer Reviews
    Average rating: - 0 reviews

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    Common Questions

    1. Question :

      I am trying to figure out if this clutch kit comes with the flywheel.

    2. Answer :

      It does not come with a flywheel unless specified. It is possible to order a flywheel, but that is typically a custom order and you would be best to have our sales team assist you.


    Ask A Question

    Buyers Guides

    Sorry, no buyers guides exist for this product.

    Installation Guides

    Prices& Ordering

    Prices & Ordering
    DESCRIPTION PRICE ORDER
    For E36 M3 328i/iS (1995-1999) - (all other E36 models when using M3 flywheel)
      CeraMetallic for > 530lb-ft
    $ 689
    CLT36MMYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 530lb-ft
    $ 639
    CLT36MCYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 380lb-ft
    $ 549
    CLT36MOYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 530lb-ft
    $ 639
    CLT36MKYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For E39 530i 528i 1 (1996-2004) - ()
      CeraMetallic for > 530lb-ft
    $ 879
    CLT393MYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 530lb-ft
    $ 829
    CLT393CYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 380lb-ft
    $ 659
    CLT393OYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 380lb-ft
    $ 659
    CLT393KYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For E39 M5/540i (6/1996-2004) - ()
      Multi Puck Ceramic 2 for > 650lb-ft
    $ 829
    CLT394CYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 450lb-ft
    $ 699
    CLT394OYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 500lb-ft
    $ 829
    CLT394KYU
    add_shopping_cartAdd To Cart
    (custom item)
      UltraSmooth CeraMetallic for > 650lb-ft
    $ 879
    CLT394MYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For E46 330i/Ci (5speed) 328i/Ci 1 (1999-2002)
      CeraMetallic for > 530lb-ft
    $ 879
    CLT465MYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 530lb-ft
    $ 829
    CLT465CYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 380lb-ft
    $ 659
    CLT465OYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 380lb-ft
    $ 659
    CLT465KYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For E46 330i/Ci 6-speed / ZHP 1 (2003-2005) - ()
      CeraMetallic for > 530lb-ft
    $ 879
    CLT466MYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 530lb-ft
    $ 829
    CLT466CYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 380lb-ft
    $ 659
    CLT466OYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 380lb-ft
    $ 659
    CLT466KYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For UUC-E90335-OEPO
      CeraMetallic for > 530lb-ft
    $ 879
    CLT46MMYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 530lb-ft
    $ 829
    CLT46MCYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 380lb-ft
    $ 659
    CLT46MOYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 480lb-ft
    $ 819
    CLT46MKYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For E82/E87/E88 135i (2007-2014)
      CeraMetallic for > 650lb-ft
    $ 675
    CLT8XAMYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 650lb-ft
    $ 635
    CLT8XACYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 450lb-ft
    $ 535
    CLT8XAOYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 500lb-ft
    $ 635
    CLT8XAKYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For E90/E92 335i 1 (2007-2013)
      CeraMetallic for > 650lb-ft
    $ 675
    CLT9XAMYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 650lb-ft
    $ 635
    CLT9XACYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 450lb-ft
    $ 535
    CLT9XAOYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 500lb-ft
    $ 635
    CLT9XAKYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For Z3-M Coupe/Roadster (incl. S52 and S54)
      CeraMetallic for > 530lb-ft
    $ 689
    CLTZ3AMYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 530lb-ft
    $ 639
    CLTZ3ACYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 380lb-ft
    $ 549
    CLTZ3AOYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 530lb-ft
    $ 639
    CLTZ3AKYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For Z4 3.0i 1 (up to 7/03 production) - ()
      CeraMetallic for > 530lb-ft
    $ 879
    CLTZ4AMYU
    add_shopping_cartAdd To Cart
    (custom item)
      Multi Puck Ceramic for > 530lb-ft
    $ 829
    CLTZ4ACYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 380lb-ft
    $ 659
    CLTZ4AOYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 380lb-ft
    $ 659
    CLTZ4AKYU
    add_shopping_cartAdd To Cart
    (custom item)
    DESCRIPTION PRICE ORDER
    For Z8 6-speed (not for Alpina edition) 1 - ()
      Multi Puck Ceramic 2 for > 650lb-ft
    $ 829
    CLTZ8ACYU
    add_shopping_cartAdd To Cart
    (custom item)
      Performance Organic for > 450lb-ft
    $ 699
    CLTZ8AOYU
    add_shopping_cartAdd To Cart
    (custom item)
      Segmented Kevlar for > 500lb-ft
    $ 829
    CLTZ8AKYU
    add_shopping_cartAdd To Cart
    (custom item)
      UltraSmooth CeraMetallic for > 650lb-ft
    $ 879
    CLTZ8AMYU
    add_shopping_cartAdd To Cart
    (custom item)