SUBARU WRX STI Transmission & Drivetrain

ACT Heavy-Duty Clutch Kits

ACT heavy-duty clutch kits offer a clamp load increase of 20 to 50 percent over OEM, significantly increasing torque capacity. The pedal feel with these clutches varies from stock to a moderate increase. Available for street and race applications, many are SFI-certified to ensure safety.

4.54 out of 5 stars ( 87 )

$781.00

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$861.00

Competition Clutch Stage 2 Clutch Kits

Competition Clutch offers Stage 2 clutch kits for a variety of applications, including many Mazda, Subaru, Toyota, Scion, Geo, Lexus, Pontiac, Mitsubishi, Hyundai, Nissan, Infiniti, Ford, Honda©, and Acura© models from 1975 and up. The kits provide up to 80 percent increase in torque capacity and are properly suited for aggressive street use and moderate track use. The Brass Plus material with its alloy backing matched to a performance pressure plate will provide smooth engagement and extended life. State 2 clutch kits include a Competition Clutch performance pressure plate, a high-torque sprung disc with anti-burst steel-backed Brass Plus facings, throw-out bearing (where applicable), pilot bearing/bushing (where applicable), and alignment tool.

Not Yet Reviewed

$525.00

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$725.00

Competition Clutch Lightweight Flywheels

Competition Clutch steel flywheels are made of 4140 forged steel and are one-piece designs, which helps significantly in reducing the chances of ring gear separation and friction surface warpage. Forged steel flywheels work with all performance and stock clutch assemblies, and can be resurfaced. Competition Clutch lightweight steel flywheels are recommended for naturally aspirated and/or street driven applications. They preserve low-end torque and drivability, and are well suited for Gravity, Stage 1, and Stage 2 clutch applications.

Not Yet Reviewed

$395.00

XClutch Stage 1 Clutch Kits

XClutch Stage 1 clutch kits offer a variety of performance upgrades for both street and track applications. They are designed in-house and normally utilize a single plate organic, ceramic, or carbon friction disc along with an upgraded factory-style pressure plate. XClutch kits utilize a similar mechanism to the factory clutch, making them ideal enhancements for most vehicles with low to mid-level performance modifications. Stage 1 clutch kits are available in three distinct performance clutch packages—sprung, rigid solid, and steel-backed organic. Features and benefits of each: * 1A sprung organic—this range has been specifically designed for street vehicles that have minor engine and general performance modifications. These kits offer a sprung organic friction disc that allows for great drivability, while offering improved clamping force through the use of a performance pressure plate. * 1G rigid solid organic—with a rigid center version of the organic disc, this range is ideal for street vehicles and light track use. These kits are often available with a lightweight alloy pressure plate and performance flywheel. * 1T steel-backed organic--this range offers a higher burst strength by bonding the organic friction material directly to a steel backing plate. These kits are ideal for high performance vehicles used on the street with occasional track use.

3.6 out of 5 stars ( 5 )

$656.87

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$2,233.98

ACT Streetlite Xact Flywheels

ACT Streetlite Xact flywheels are designed to provide significantly improved engine response and acceleration at an affordable price. Order the model designed for your vehicle application. Features: * Lighter and stronger than OE flywheels * Better drivability and durability * Recommended for street use and drag racing * Designed using the latest CAD and Finite Element Analysis software * CNC-machined and dynamically computer-balanced for smooth operation at extremely high rpm * Entire forgings are heat-treated for strength and toughness * Tight tolerances for fit, concentricity, and parallelism * Adequate material behind the friction surface for excellent heat capacity * One-piece construction for reduced failure and uniform, efficient heat transfer—no more warped inserts * Integral ring gears are induction-hardened for longer gear life and weight reduction where it matters most—eliminates gear breakage or separation * Ring gears are cut with lead-in chamfers for better starter engagement and to prevent rounding-off gear teeth * SFI-certified

4.94 out of 5 stars ( 36 )

$476.00

Summit Bucks

Action Clutch Stage 1 Clutch Kits

Action Clutch single disc clutch kits contain a range of street to high performance clutch systems built using American materials which are all locally sourced as it has been done for 60 years. Action Clutch staged kits come complete with the clutch disc, pressure plate, throwout/release bearing, pilot bearing/bushing (when applicable), and alignment tool. Action Clutch Stage 1 clutch kits for street and occasional track use offer a 70 percent increased holding capacity. They utilize reinforced steel-backed copper Kevlar® organic friction material and feature a single diaphragm heavy-duty pressure plate, while maintaining an OEM-like pedal feel and a smooth engagement. These kits are engineered for vehicles that range from stock to basic bolt-on cars, and like all Action Clutch sprung kits, the Stage 1s feature fully enclosed spring retainers to help protect your investment from any springs popping out which can cause catastrophic damage to your transmission or engine. After assembly, each kit goes through multiple quality checks to ensure quality. Select the kit designed for your vehicle. Pressure plate and clutch disc features: * All clutch covers feature ductile iron friction plate * Reinforced heavy-duty drive straps * 4-stage, heat-treated diaphragm spring * 100 percent dynamically spin balanced * American grade rivets * Full enclosed spring retainers * Sprung hub for easy engagement

4.5 out of 5 stars ( 2 )

$531.21

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$563.96

Exedy OE Clutch Kits

Exedy OE clutch kits provide the correct fit and function to restore stock power levels. Most replacement clutch kits include pressure plate assembly, clutch disc, release bearing, pilot bearing or bushing, alignment tool, lubricating grease and general installation notes. Robotic testing, special heat-treating, and the use of their own friction materials ensure optimum pedal feel, better drivability, durability, and smooth engagement, so you can enjoy your ride more. Exedy OE clutch kits offer coverage for a wide range of vehicles. Choose the kit designed for your vehicle.

4.5 out of 5 stars ( 14 )

$512.12

Competition Clutch Stage 3 Clutch Kits

Competition Clutch offers Stage 3 clutch kits for a variety of applications, including many Mazda, Subaru, Toyota, Scion, Geo, Lexus, Pontiac, Mitsubishi, Dodge, Hyundai, Nissan, Infiniti, Ford, Honda©, and Acura© models from 1975 and up. These kits provide up to 150 percent increase in torque capacity. The segmented ceramic material with a performance pressure plate will provide the ultimate grab in street and strip combinations. They provide quick but smooth engagement and extended life. Stage 3 clutch kits include a Competition Clutch performance pressure plate, a high-torque sprung disc with segmented ceramic facings, throw-out bearing (where applicable), pilot bearing/bushing (where applicable), and alignment tool.

5.0 out of 5 stars ( 1 )

$575.00

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$795.00

Competition Clutch Stock Clutch Kits

Competition Clutch offers stock clutch kits for a variety of applications, including select Mazda, Subaru, Toyota, Lexus, Pontiac, Mitsubishi, Infiniti, Nissan, Honda©, and Acura© models from 1985 and up. These OE-style clutch replacements are the economical solution for cars that are stock or have basic bolt-ons. They provide a stock torque capacity rating and maintain stock pedal feel. Break-In Procedure: After you install your new Competition Clutch, you'll want to make sure that the clutch is properly broken in for ultimate operation. To break in your clutch, shift as often as possible during the first 500 miles, by doing so you'll ensure that the material from the disc is embedded into the friction surfaces of the pressure plate and flywheel. Following the break-in procedure will deliver the longest possible clutch lifespan.

Not Yet Reviewed

$450.00

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$595.00

South Bend Clutch Stage 3 Endurance Clutch Kits

South Bend Clutch Stage 3 Endurance clutch kits are recommended for single mass flywheel (SMF) when original design is DMF (dual mass) to achieve optimal performance. These kits use the same race-engineered SFI-approved pressure plates as Stage 3 Daily Driver packages. The disc is designed for the special needs of a vehicle with circuit racing in mind. Kevlar® friction material is used for its unique friction compounds applied with high-energy levels. This translates to a perfect transition from one gear to the next. Discs are assembled with only performance components and equipped with torsion springs functioning as a damper between engine and gearbox. These Stage 3 Endurance clutch kits are recommended for applications such as rally, endurance race, club sport, autocross, performance street and daily driving. Order the kit you need.

5.0 out of 5 stars ( 2 )

$1,263.83

ACT Monoloc Collars

ACT stands for Advanced Clutch Technology--and that's exactly what you get with the revolutionary Monoloc collars. These one-piece clutch components are direct replacements or an upgrade to the standard two-piece wedge collar and wire ring common in pull-type systems. What makes Monoloc collars special? The spring tension of the segmented retaining ring is precisely calculated to provide uniform loading on the bearing and pressure plate, ensuring proper alignment. They are also constructed of hardened chromoly steel for long life. Monolocs are designed to fit numerous makes and models, including Mazda, Mitsubishi, Saab, and Subaru.

5.0 out of 5 stars ( 1 )

$85.00

ACT Throwout Bearings

ACT throwout bearings are the same high-quality bearings included in your ACT clutch kits. They are available separately for every kit made by Advanced Clutch Technology and are perfect for replacing lost or damaged bearings.

4.27 out of 5 stars ( 11 )

$96.00

ACT Mod-Twin 225 Heavy-Duty Twin-Disc Street Clutch Kits

ACT Mod-Twin 225 heavy-duty twin-disc street clutch kits are designed to tackle aggressive launches and rapid shifting of high powered AWD's—by combining twice the organic friction surfaces with a no-nonsense solid mono-drive hub in a completely modular design. Each diaphragm spring endures an exclusive 4-stage heat treating process to provide a more consistent light pedal feel. The puck-style friction plates, with high-quality organic materials, deliver high friction coefficient, superior heat capacity, and long clutch life. These friction plates uniformly transfer torque to a mono-drive chromoly hub, which is heat-treated for strength and durability, extending input shaft life with one continuous spline. The lightweight, rigid design allows for quicker shifts and trouble-free service. Clutch kits are available in different styles and other options for fitment on countless vehicles from the early 2000s and up. Features and benefits: * Recommended for drag, road, or rally racing use * Predictable aggressive engagement, light pedal effort, smooth shifting, possible start-off judder with OE to mild transmission gear noise * Forged aluminum cover, mono-drive hub, exclusive diaphragm, premium friction materials, and hardened wear points ensure this long-life twin performs and survives under the most demanding conditions * Delivers maximum performance and high heat tolerance by combining robust design, strategic features, choice materials, and close tolerances * 100 percent clamp load tested, balanced, and SFI certified Kit contents: * Forged aluminum pressure-plate cover * CNC-machined and dynamically balanced flywheel * Diaphragm spring and face * Puck-style organic friction plates * Available with sprung or unsprung mono-drive hub assembly * Floater * Patented mono-Loc collar * Release bearing * Alignment tool and pilot bearing (if needed) Note: Mod-Twin clutches are fully rebuildable and most components can also be ordered separately, if you do not need to purchase complete kit.

Not Yet Reviewed

$1,984.00

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$2,104.00

ACT Roller Pilot Bearings

When you're installing a new clutch, these ACT pilot bearings are made to obtain less friction and longer life out of your clutch assembly. These high-quality roller bearings are available for a variety of popular applications.

5.0 out of 5 stars ( 3 )

$7.00

The Driveshaft Shop Driveshafts

Factory driveshafts are made from a smaller tube (there are 2 different types) and will flex and bend during hard acceleration, causing the rubber drives to wear out prematurely. The Driveshaft Shop torque tube driveshafts are made from T-6 aluminum and uses The Driveshaft's own custom machined ends. This ensures that the shaft will not distort or break like the factory units, and offer units rated up to 1000 hp. Choose the driveshaft designed for your vehicle.

4.6 out of 5 stars ( 5 )

$1,299.98

ACT Race Clutch Discs

ACT race clutch discs are available in three distinct styles--choose the options that best suit your application. Spring-centered discs are the most popular and feature reduced driveline shock and spline wear with quieter operation. Rigid-hub versions offer improved durability but increase gear noise and spline wear. For either of those hub designs, you can choose six pads for better heat management and engagement, or four pads for the quickest shifting. Sintered iron discs offer the highest torque capacity and ultra-high heat capacity. They're designed for cars using clutch-less shifting or drag racing transmissions. Additional product details: * Premium ceramic friction materials provide high-heat tolerance, high coefficient of friction, and low wear rates * Carefully broached splines provide exact fit onto the transmission input shaft for long spline life and better clutch release * Heavy-duty torsional dampening springs are provided in the best sizes and spring rates to help reduce noise * Drive plates are made of high-carbon steel; heat-treated and black zinc coated to resist bending, cracking, fatigue, and rusting * Certified to SFI specifications

4.57 out of 5 stars ( 23 )

$157.00

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$237.00

XClutch Stage 2 Clutch Kits

XClutch Stage 2 clutch kits offer performance upgrades for both street and track applications. Designed in-house, XClutch utilizes the latest ceramic technology in their Stage 2 kits offering either a cushioned or a sprung-style friction disc. They are mated with a high performance pressure plate and are recommended for vehicles requiring a higher level of torque holding and heat capacity. Features: * 1C cushioned ceramic—the discs offer a dampening layer between the two friction surfaces which is clamped together as the force of the pressure plate is exerted on the disc. This dampening along with a sprung hub offers drivability despite the ceramic friction surface. These kits are ideal for track cars that require some drivability or very high-horsepower street vehicles that require the added heat capacity of the ceramic friction material. * 1B sprung ceramic—these friction discs offer a sprung center to allow for drivability and are specifically designed for track use with minor street use. The kits offer great heat capacity due to the ceramic friction material and are available for a wide range of performance vehicles.

Not Yet Reviewed

$706.54

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$2,386.99

XClutch Stage 1 Extra Heavy-Duty Clutch Kits

XClutch Stage 1 clutch kits offer a variety of performance upgrades for both street and track applications. Designed in-house, XClutch Stage 1X kits are extra-heavy-duty sprung organic packages that provide increased clamp load along with a sprung organic friction disc which allows for excellent drivability. These kits are designed specifically for high horsepower street vehicles that require increased torque capacity, but still require drivability on the street.

Not Yet Reviewed

$712.07

Dorman Driveshafts

Dorman driveshafts are designed to replace your factory originals with no modifications. They are manufactured from quality materials and have the stock connections for an easy bolt-in fit. The driveshafts are available in various lengths, diameters, and materials for many auto, truck, and SUV applications.

4.51 out of 5 stars ( 331 )

$596.99

ACT Xtreme Pressure Plates

ACT Xtreme pressure plates feature induction-hardened diaphragms to reduce wear and promote smooth operation. They utilize stronger drive straps and rivets to strengthen the pressure plate and prevent breakage. All castings are CNC-machined for greater consistency and precision. Step up your race and street game; order the ACT Xtreme pressure plates recommended for your vehicle. Some of their many features include: * 40 to 120 percent clamp load increase * Computer spin-balanced * Stiffening ribs * Pedal feel is stiff to moderate * SFI-certified * Recommended disc: Street/Race

4.43 out of 5 stars ( 7 )

$559.00

XClutch Chromoly Flywheels

XClutch chromoly flywheels are explosion-proof and designed to meet SFI specification 1.1. They come with an integral ring gear and timing sensor ring, if applicable. These flywheels have been engineered to the highest standards—and are available in a range of configurations for various performance street and race applications. They feature premium quality materials for the ultimate in strength and weight reduction. XClutch flywheels are the choice for many top motorsport teams and tuners from around the world. Order the model recommended for fitment on your car or truck.

5.0 out of 5 stars ( 2 )

$431.17

Exedy Lightweight Flywheels

Exedy lightweight flywheels combine low weight, low inertia, and high thermal capacity. They're designed for light to moderately tuned racing cars for drag racing, autocross, and rally events, as well as street usage. The flywheels are made from solid one-piece billet chromoly steel or chromoly steel forgings. These replacements are specifically designed to reduce weight and inertia for better engine response. Most incorporate special design features to enhance the airflow, which improves the cooling of the clutch. The ring gear teeth are integrated onto the flywheel, unlike an aluminum flywheel where the ring gear is pressed onto the flywheel and has the possibility of separating from the flywheel due to the different expansion coefficients of aluminum and steel. Newly available are lightweight, solid replacements for vehicles fitted with OE dual mass flywheels. Exedy lightweight flywheels have passed engineering tests to 15,000-18,000 rpm. They're guaranteed not to fail to the said RPM, and are all SFI approved. * Material: All Exedu lightweight flywheels are made from either forged or billet chromoly steel. Chromoly is an abbreviation for "chromium-molybdenum steel" due to its property of incorporating alloy elements chromium and molybdenum. Thanks to this combination of materials, chromoly has an excellent strength to weight ratio and is considerably stronger and harder than standard 1020 steel or other aluminum flywheels on the market. * SFI certification: All Exedy Stage 1 Organic, Stage 2 Ceremetallic and Lightweight Flywheels carry SFI 1.1 Certification. Which means, when you buy these products, you can be confident they're certified for use in competitive motorsports. * Resurfacing Exedy flywheels: Resurfacing your Exedy lightweight flywheel during a clutch service is an ideal way to extend the life of your clutch and flywheel. Thanks to the nature and design of the Exedy flywheels, no special steps or tools are needed to perform the service. All you should do is follow the OEM service specifications to return your Exedy flywheel to "like new" condition.

Not Yet Reviewed

$406.46

GSP New CV Axle Assemblies

GSP new CV axle assemblies are engineered to provide OE fit, form, and function. Premium materials, coupled with precise machining and balancing, ensure smooth, vibration-free performance in all driving conditions. All axles are thoroughly inspected for quality and workmanship. Additional attributes of GSP new CV axle assemblies include: * Since boot failure is the main cause of CV axle failure, GSP axles use only premium-grade neoprene boots that ensure robust abrasion and extreme temperature resistance, preserving boot integrity * Assembled with a specially formulated, high-temperature moly grease that resists friction and wear, contributing to a lifetime of smooth, dependable performance

3.89 out of 5 stars ( 93 )

$79.50

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$174.99

Dorman Clutch Slave Cylinders

Are you looking for a replacement slave cylinder for your clutch? Dorman has you covered with their OEM Dorman clutch slave cylinders. Dorman clutch slave cylinders deliver increased performance and reliability. Dorman has industry-leading slave cylinder application coverage that is second to none. If you want your clutch working at optimum levels, then you need one of these Dorman clutch slave cylinders.

4.52 out of 5 stars ( 75 )

$129.99