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Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. These replacement units are available for dozens of axle applications.
( 501 )
$675.99
Centerforce dual friction clutches generate up to a 90 percent increase in holding capacity over stock systems. These clutch-and-disc sets are designed for engines producing high horsepower and big torque outputs. Perfect for 4WD vehicles, all Centerforce clutch systems provide smooth engagement and light pedal pressure without compromising high performance.
( 306 )
$556.95
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$650.95
Centerforce II clutch kits provide up to a 60 percent increase in holding capacity over stock systems. Their clutch-and-disc sets are recommended for mildly modified vehicles used for street and strip type applications. These units are also very capable for 4WD and off-road use, heavy-duty towing, and commercial applications.
( 47 )
$545.95
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$577.95
Maximize your transmission's power potential! TCI sprag and drum assemblies are designed to reduce rotating mass without compromising drum integrity. They will hold up to five clutches and are hard coated for improved wear characteristics.
( 6 )
$517.95
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$548.95
On Sale
Nitrous engines produce some serious horsepower and require a serious torque converter to handle it. B&M nitrous Holeshot torque converters can handle up to 650 hp and are built with the same features as the other B&M Holeshots, with the addition of anti-balloon plates that allow these converters to stand up to the instant horsepower that nitrous delivers. Converters with higher-than-stock stall speed let your ride accelerate better from a dead stop and allow the vehicle to idle better when a big cam is used. Fully furnace brazed, heavy-duty, needle-bearing thrust packages and new turbine hubs are the key features of these converters, along with the anti-balloon plates. These are serious converters for serious street performance cars.
( 21 )
$631.95
$538.95
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$749.95
Big torque doesn't have to mean big traction problems. Eaton Posi Performance differentials combine carbon friction discs with precision-forged gears to give you great traction, even under higher torque loads. Plus, the carbon friction discs produce smooth, quiet performance for the life of your vehicle.
( 104 )
$750.99
Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicles. Their gear sets are made from first-run steel, they never use recycled metal. This allows Motive Gear Performance ring and pinions to handle the extreme torque from high-horsepower racing engines. Extensive engineering, computer-controlled heat treatment, superior strength, quality and the widest selection of racing gear ratios, makes Motive Gear Performance ring and pinions the clear winner! Engineered to the highest standards, every Motive Gear Performance product goes through rigid quality control processes in their in-house lab. Motive Gear Performance also offers a lightweight alternative to standard ring and pinion gear sets. Their AX Series ring and pinions are designed to increase horsepower and efficiency by removing rotating weight. Professional race teams have used custom-lightened drivetrain parts for years, resulting in faster times and more wins. The AX Series gears from Motive are lightened during the manufacturing process; this results in gear sets that have been engineered, not modified. Computer-controlled heat treatment, index tooth spacing, and CNC machining all go into AX Series performance gear sets. Motive Gear Performance: What the pros run!
( 194 )
$530.99
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$643.99
Richmond Gear Pro Gear ring and pinion sets take it a step further. The gear sets are designed for race use only where hard launches and severe heat cycling occurs. They're made from a softer, more malleable 9310 steel alloy to be more resistant to breakage under harsh racing conditions. These gears feature an outstanding rotating weight loss of up to 6 pounds, ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.
( 44 )
$469.99
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$513.99
On Sale
Lakewood bellhousings are an excellent choice for street rods, street machines or oval track applications where the use of an SFI-approved bellhousing is not required. These units are made from 0.250 in. thick hydro-formed steel or lightweight cast aluminum. They're designed for use with hydraulic and mechanical fork throwout bearings--and utilize factory bolt patterns for easy installation. Order the model recommended for your transmission make and model.
( 38 )
$749.95
Centerforce I clutch kits are designed to be high-quality, entry-level performance clutches for those in need of a superior stock replacement. Using the patented Centerforce centrifugal weights (where applicable) and premium friction materials, these Stage 1 clutch systems are perfect for applications with stock engines or mild power increases from minor bolt-on modifications.
( 31 )
$503.95
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$577.95
Manufacturer Rebate
These Powertrax no-slip traction systems are the latest design in traction-adding differential technology. They combine the smooth operation of a limited-slip differential with the traction performance of a locking differential. A precise synchronization mechanism eliminates the ratcheting sounds typical of other locking differentials. Special gear and spring designs reduce the backlash and, therefore, the driveline windup. Only ultra-strength material that is 67 percent stronger than titanium is used. Installation is simple because no ring and pinion setup is required. In addition, no special tools or oils are needed. Step-by-step, model-specific instructions are provided with every kit.
( 81 )
$551.23
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$725.62
On Sale
Hays Twister 3/4 Race performance torque converters are designed to be the perfect solution for your street/strip machine. Hays designed the Twister torque converters to be one step short of being a "Full Race" converter giving you the perfect combination of performance and affordability. Every torque converter is hand built, inspected and tested to ensure they meet the top of the line quality you expect. To ensure consistency and improve performance each converter is built for one transmission with one bolt pattern, meaning a lighter converter to maximize performance. High flow stators promote better cooling and heavy duty Torrington bearings are used to increase strength and durability. Not ready to go a "Full Race" converter, Hays is there for you with their Twister 3/4 Race torque converters.
( 11 )
$529.95
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$699.95
On Sale
Hays Street 650 clutch conversion kits are designed to handle highly modified engines up to 650 hp naturally aspirated (600 hp for forced induction and nitrous combinations). The new 26-spline versions work in conjunction with a modern 5- or 6-speed transmission swap. These are true street/strip clutches for spirited high performance driving or frequent track use. The high performance dual-friction disc utilized in the Street 650 has an upgraded spring hub with heavy-duty damper springs to handle greater shock loads versus a standard damper spring. The disc features a sintered metallic friction surface and an organic friction surface. It does a great job at dissipating heat and fighting the slippage found in ordinary discs, along with providing the smooth engagement characteristics of a street-style clutch. These conversion kits also provide an upgraded heavy-duty pressure plate to round out the performance clutch. The Street 650 is a great choice if you visit the track often. Order the model recommended for your vehicle application. Features and benefits: * Upgraded damper springs deliver up to 30 percent more clamping pressure than stock OE clutch * Dual-friction disc offers the best of both worlds—smooth engagement and excellent holding capacity * All Street 650 clutch kits come complete with pressure plate, disc, throwout bearing, and alignment tool
( 6 )
$564.95
$507.95
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$699.95
Hays Classic clutch kits are the original Hays clutch! These conversion kits are the newest 26-spline version in the Hays clutch lineup, and are designed to work in conjunction with a modern 5-speed or 6-speed transmission swap. They feature an organic disc with an upgraded pressure plate for increased holding power over stock. They're designed for stock cars and trucks, or ones with minor performance bolt-ons, such as headers, intake, and exhaust. For clutch kits that are street-friendly, smooth, and reliable, consider the Hays Classic line of clutches—they're a great choice for your favorite muscle car, Jeep, or truck! Order the kit recommended for your vehicle application. Hays Classic conversion clutch kit features: * Includes 26-spline clutch disc for use with most 5-speed and 6-speed conversions * Steel back clutch disc features heavy-duty hub spring assembly for increased load capacity * Great drivability for power levels up to 400 hp * Clutch kit is painted signature Hays Classic orange color * Smooth, chatter-free operation using top quality organic composite friction surface material * Upgraded pressure plate gives you increased holding capacity over a stock clutch * Clutch kits come complete with pressure plate, disc, release bearing, and alignment tool (unless otherwise noted)
( 1 )
$515.95
Manufacturer Rebate
Powertrax Lock-Right and performance lockers' straight-line performance is equal to a solid spool axle, yet they automatically unlock to allow for full differentiation in turns. They also reduce the excessive noise, tire wear, and drivetrain damage associated with other lockers. Powertrax lockers replace the spider gears in your differential carrier without affecting your ring and pinion settings. The whole job can be done in your driveway with common hand tools in a couple of hours. A carrier is not included.
( 147 )
$501.99
On Sale
Hays Street 450 clutch conversion kits are an excellent upgrade offering up to 30 percent more holding power (clamping force) over your stock clutch. They're designed for handling stock to mildly modified engines—up to 450 horsepower. If drivability along with a stock pedal feel are the leading factors for your application, then order the Hays Street 450 clutch conversion kit recommended for your specific vehicle and engine size. Features, items, and specs: * Smooth, chatter-free operation using top quality organic composite friction surface material * Upgraded damper springs * Pressure plate * Clutch disc * Throwout bearing * Alignment tool * Instructions
( 8 )
$570.95
On Sale
Hays steel flywheels are engineered to handle extreme-duty applications and designed to take the punishment of today's high-horsepower engines. They are CAD-engineered and precision CNC-machined to strict tolerances. Available in weights up to 50 lbs. for specialized applications, most Hays flywheels are drilled with both the Borg and Beck and Long-style clutch patterns. Upgrade to a precision-machined and engineered Hays billet steel flywheel. Features include: * SFI-approved--legal for use in racing classes that require SFI certification * CNC-machined from certified billet steel for maximum strength and durability * CAD-designed for optimum performance and reliability * Offered in internal, external, or neutral (zero) balanced versions * Available for a wide variety of engines Note: When choosing a flywheel, remember that a heavier flywheel stores more energy. A heavy car requires more power (or inertia) to launch without bogging the engine and needs a heavier flywheel. Lighter flywheels create less inertia at launch, but will accelerate faster through the gears.
( 31 )
$573.95
Centerforce DFX is their competition-proven clutch packages for select import and domestic applications. DFX Series clutches are engineered to meet competition standards of quality and craftsmanship and are aimed at high-end applications that continually demand increased integrity and holding capacity. These clutch kits score big--not only with their holding capacity and strength, but also with their race-inspired drivability. They retain an easy pedal effort, thanks to Centerforce's patented ball-bearing actuated diaphragm, for smooth engagements without detriment to the vehicle's release components. Centerforce DFX performance clutch kits utilize nodular iron pressure plate rings and reinforcements designed to help prevent drive strap breakage and safety. The DFX Series clutch kits allow end users to tailor their driving performance and style with different choices of clutches and clutch discs, from street/strip to full-on drag racing capabilities.
( 5 )
$556.95
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$650.95
Manufacturer Rebate
Powertrax Grip Pro traction systems are the latest design in differential technology. They combine the smooth operation of a limited-slip differential, with the strength of a fully machined, forged steel case. Using 3x2 spiral gear engineering, the Powertrax Grip Pro delivers progressive and variable traction. Based on throttle input, you are in control of how much traction is applied. These differential systems are great for use where finesse is just as important as brutal traction. On the road or track, in the rain or snow, Grip Pro is a winner! The systems come fully assembled and there are no friction plates—so you can use any gear oil you like, including full synthetic and racing lube.
( 21 )
$658.13
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$683.43
Manufacturer Rebate
Powertrax Grip LS traction systems are the latest design in differential tech upgrades. They combine the smooth operation of a limited-slip differential, with the strength of a fully machined case. These systems use carbon fiber and steel friction plate technology, delivering streetable and consistent traction. They arrive completely assembled--and because there are friction plates on machined internal gears, they are fully rebuildable. The carriers are the ideal solution for just about any light truck, sport utility, and muscle car on the road today.
( 5 )
$782.34
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$872.76
Centerforce aluminum flywheels are manufactured from 7075 T-6 aircraft-grade billet aluminum, with shrink-fit ring gears that also have mechanical retention. These flywheels are CAD/CAM-designed and CNC-machined to deliver perfect, no-hassle, bolt-in fitments with no modifications, in combination with either Centerforce clutches or other clutch assemblies built to OEM specs. They're available for popular domestic and import vehicles, including trucks, and are SFI-approved.
( 1 )
$524.95
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$535.95
Centerforce LMC Series is a specifically designed low inertia performance clutch that dramatically reduces engine rotating mass. These light weight, SFI approved competition clutches are intended with most road racing and circle track applications in mind. Centerforce machines these special pressure plates from high-strength aircraft-grade billet aluminum and then attach a special heat-treated replaceable friction surface. The Centerforce LMC Series friction disc utilizes a dual-segmented carbon composite lining for improved cooling and excellent torque capacity. Light Metal Clutch assemblies from Centerforce use their patented ball bearing actuated diaphragm and centrifugal weight system for maximum grip while maintaining a comfortable and controllable clutch pedal. When used in conjunction with Centerforce's aluminum flywheels, LMC Series brings the term lightweight to an unparalleled level.
( 4 )
$787.95
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$839.95
Centerforce LMC Series pressure plates are specifically designed to dramatically reduces engine rotating mass. These lightweight, SFI approved competition pressure plates are intended with most road racing and circle track applications in mind. Centerforce machines these special pressure plates from high-strength aircraft-grade billet aluminum and they use their patented ball bearing actuated diaphragm and centrifugal weight system for maximum grip while maintaining a comfortable and controllable clutch pedal. When used in conjunction with Centerforce's aluminum flywheels, LMC series brings the term light weight to an unparalleled level.
( 2 )
$682.95
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$734.95
South Bend Clutch Stage 2 Endurance clutch kits are recommended for daily and street use with an emphasis on rally and endurance racing. An SFI-approved single-mass flywheel is recommended for racing climate applications in order to achieve optimal performance (flywheel not included). Order the clutch kit recommended for your vehicle application. Features include: * Designed for the racing environment * Pressure plate is precision-balanced for vibration-free operation at high-rpm * Pressure plate fulcrum is altered for a positive disengagement and a quick shift * Disc is engineered with a dual-damped design to provide accurate control when accelerating through corners * Hybrid friction material with a full face Feramic (sintered iron) lining on the flywheel side and a high metal content organic lining on the pressure plate side * Engagement is positive, yet buffered due to the high graphite content unique to Feramic facings
( 3 )
$514.57
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$623.64
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