Hummer SPEC Clutch

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SPEC Clutch

SPEC Clutch

About SPEC Clutch

LMPerformance offers the SPEC Clutch line of clutch and flywheels. SPEC is a Manufacturer of street high performance and racing clutches and flywheels. Featuring Clutch Kits From street kit Stage 1,2,2+, 3, and 3+ to Race Kits Stage 4 and 5. And now the SPEC Super Twin with TQ ratings of over 1500 FT TQ ! Every SPEC Clutch Kit and Flywheel has been SFI Approved.

SPEC billet flywheels are manufactured and developed for specific driving environments and recommended based on application.

IMPORTANT NOTE: Items on this page are for definition purposes only. These descriptions are to help explain the differences in the Stages available. Please note that your specific application may vary. Not all kits come with bearings and may or may not come with a sprung hub.

LMPerformance listing of SPEC products feature Clutch Kits From street kit Stage 1,2,2+, 3, and 3+ to Race Kits Stage 4 and 5 as follows:

Stage 1: Street, Drag, Drift, Road Race, Rallye, Pulling, Autocross

Features an integrally molded carbon kevlar-based, high performance organic lining that offers smooth engagement and excellent life. Best for street and many track/off-road applications.

Stage 2: Street, Drag, Pulling, Autocross

Features segmented or full faced pure Kevlar disc with steel backing. This lining features excellent drivability like the stage 1, but offers slightly longer life and higher torque capacity.Best for street, drag, pulling and autocross.

Stage 2+: Street, Drag, Pulling, Autocross

Features a multi-friction disc in a full faced configuration with carbon semi-metallic on one side and Kevlar on the other. Bridging the gap between stage 2 and stage 3, the 2+ offers drivability and engagement quality characteristic of the stage 2, but with a 15-20% higher torque capacity. The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Great for street, drag, autocross, road racing, pulling, rallye and drift.

Stage 3: Street, Drag, Pulling, Autocross

Features a carbon semi-metallic 6 puck sprung or unsprung hub disc that has been the leading puck clutch in drivability, life and torque capacity. This unit is designed for street and race cars that require an aggressive but streetable engagement and high torque capacity. (sprung version) The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Also available in 3 puck configuration. Great for street, drag, road racing, pulling, rallye and drift.

Stage 3+: Street, Drag, Pulling, Autocross

The flagship stage for a high powered street or race car that requires a manageable and friendly engagement, the stage 3+ features a carbon semi-metallic full faced material that offers unparalleled life, friction co-efficient and drivability characteristics in one single package. The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Great for street, drag, drift, autocross, road racing, pulling, rallye and drift.

Stage 4: Street, Drag, Pulling, Autocross

This unit is a solid hub version of the stage 3. The hub is solid 8-rivet and the assembly is heat treated for strength and durability. It is available in a 3, 4 or 6 puck configuration. Use the 3 puck for the lightest option or the 6 puck for the smoothest engagement. The 4 puck is a good compromise for both. Street drivable in 6 puck configuration, but not street friendly due to the rigid hub. Best for drag racing, road racing, pulling, rallye and drift.

Stage 5: Street, Drag, Pulling, Autocross

Features a full-metallic disc with the highest possible friction co-efficient. Street drivable but not street-friendly. Best for extreme street and drag racing.

All

The Super Twin is for street and track use with extreme horsepower and torque (700-1500 ft lbs tq). offering near-stock drivability, tremendous life expectancy, a no shimming/setup bolt-in install and maintenance free operation. With all billet construction, these units are smooth and quiet.Rebuild-able by SPEC or the end user and replacement components. The super twin is constructed of aircraft grade aluminum and high carbon billet steel. Friction is provided by dampened, full-faced carbon graphite, Organic, fiber and full metallic options are available. Flywheel and track-spec hardware are included.

Street, Drag, Pulling, Autocross

Multi-disc clutch and flywheel assemblies for limited street, drag race and road race applications. The Mini Twin assemblies are available in different clutch disc and flywheel materials, clamp loads, disc configurations and diameters which are recommended based on the type of usage the vehicle demands. The units are rebuild-able by SPEC or the end user. Types of driving: limited street, drag, drift, road racing, time attack, pulling and rallye.

Please note that some applications require a SOLID hub such as some stock flywheel applications. If you need a sprung hub then please specify this on our order form.

We are here to help you find the primo clutch and since are probably “GOOGLING” clutches and have reached this page, then you doubtless have already decided you want a new clutch or new clutch component. The reasons for your search efforts can be myriad; such as not enough friction to hold your clutch and it has started slipping, or you smell a "burning" clutch, or your clutch may not be engaging when you push it in, or you may just be having a hard time pushing the pedal; or, much more gratifying , you are engaging in the wonderful sport of racing or drag racing and know you unequivocally need a high caliber performance clutch. All of the constant shifting that racing demands can be brutal on a clutch and performance drivers respect a clutch that instills confidence in the fact that they can meet the aggressive shifting demands of racing. Only an exceptionally high grade performance clutch can meet those requirements because they are the sole ones that can accommodate the power levels and temperatures inflicted on a clutch when on the track or doing performance driving. Because performance clutches generally utilize heavier springs and premium disc materials you are guaranteed a clutch that has exceptional clamping force and won’t hesitate to grab when it is critical to do so and that it will accomplish this quickly. Never fear, if you are not racing we know you are still entitled to a clutch that is smooth to operate, long lasting and an improvement over most factory installed clutches so that your driving experience is blue-chip. There are some essentials you need to bear in mind when deciding on a performance clutch and we are here to give you some information that you can utilize in making that significant decision.

First know there are three varieties of disk clutches, single (which is probably what you have from the factory) with a single friction disc working the pressure plate and flywheel, dual with an extra friction disc and a set of surfaces labeled a floater, triple discs with three friction discs, with torque capacity increasing with the number of discs from double to nearly two hundred percent. Next, the composition of the material in the clutch is of significant importance and your driving demands play a factor in making this decision. You should seek out the clutch with the latest in technological advances when it comes to disc material since previous clutch disc materials have been eclipsed by the new composites. Then there is the manufacturer and because we have incontrovertible confidence in them we would like to introduce you to SPEC, a inimitable company and one of the foremost designers and fabricators of clutches today, who can accommodate your clutch demands by presenting you with a plentitude of choices.

SPEC, first and foremost, is an American company so their clutches are fabricated right here and their materials and manufacturing techniques can be trusted; plus, their company goal is to build a “SANS PAREIL” clutch just for you. SPEC considers their main job to be the creation of a perfect marriage of clamp load. friction, diameter and rotating mass to yield a primo operating clutch and to do that for heterogeneous applications and you can be heartened by the fact that they are up to the challenge. SPEC designed seven stages of single disc clutches and up to eight stages of multi-disc clutches using the most advanced friction materials available so they are definitely ready for the task when it comes to accommodating your requirements. They have both the expertise and desire to make you a happy customer who will not hesitate to recommend their clutches to their friends. And if what your yearning for is just an upgrade or downgrade then SPEC fabricates excellent pressure plates, flywheels and flywheel friction plates that will assist you in achieving that goal with a top-notch product that is generally a less expensive alternative. If you are needful of a full clutch kit, depending on the kit you select, it will be inclusive of a performance pressure plate and sometimes a performance flywheel; plus, you are afforded the opportunity to upgrade to a billet flywheel for primo clutch performance. SPEC, an outstanding and dedicated company, can eclipse your expectations when it comes to clutches and we can help you get your SPEC clutch or component at a competitive price You will find a listing of the diverse SPEC clutch kits and clutch components on the our web site when you search for your part.

Hummer

These are some of the items you can find at LMPerformance for your Hummer

The original Hummers were first designed by AM General Corporation, a wholly owned subsidiary of American Motors Corporation in 1979 because the United States Army was seeking contractors for a new "High Mobility Multi-Purpose Wheeled Vehicle" and in less than one year, it was the first to deliver a prototype vehicle and initial production versions were delivered to the Army's proving grounds in April 1982. Having the same structure and most mechanical components as the military version and made famous by Arnold Schwarzenegger, the civilian Hummers were finished in automotive gloss paint, adding passenger car enhancements such as air conditioning, sound insulation, upgraded upholstery, stereo systems, wood trim, and convenience packages. In 1992, AM General began selling a civilian version of the M998 Humvee vehicle to the public under the brand name "Hummer" If you are the proud owner of a Hummer look no further than the Late Model Performance web site for your Hummer H1, H2 and H3 parts and find parts to enhance the look and performance of your Hummer.

There is a better alternative to your factory installed exhaust system in your Hummer H2 and H2, the B&B (Billy Boat) exhaust system, because it will create a continuous avenue for exhaust gases to be expelled from the engine and as a consequence you will garner more power from your Hummer engine. Billy Boat accomplish this feat by mandrel bending the pipes rather than crush bending the way most factory systems are manufactured. Quality is superb, all stainless steel instead of mild steel the way most factory systems are; and the sound is perfection due to the two different packing materials and as many as three separate SCC.'S inside the muffler.

Another alternative for your Hummer H2 and H3, replacing that stock exhaust system with the superior CORSA exhaust system, for not only improved performance resulting from their patented non-restrictive design but also no drone at cruising speeds and a great look with their polished double wall tips or black stealth tips and don‘t forget their outstanding reputation.

The right exhaust system can change your Hummer for the better whether you want show quality looks or better performance and the inimitable manufacturer BORLA can help you achieve this goal. With their easy to install system you could conceivably have a new system in about two hours or six hours for a header installation and you have a system manufactured to extremely high standards with stainless steel inside and out, a fantastic sound with the dominant sound behind the tailpipe.

Your Hummer H1, H2 or H3 has an abundance of big windows to let in those nasty UV rays and heat and the solution is a TECHSHADE from WEATHERTECH that helps keep your Hummer cooler in the summer heat and avoid frost build-up in the snowy northern climates and at the same time protects the interior. Also from Weather Tech for your H2 and H3 Hummer try the WEATHERTECH, Cargo Liners to help keep your Hummer cargo area looking great by protecting it from road debris and spills.


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