Performance & Replacement Transmission & Drivetrain Parts

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic...

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.

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Results 1 - 24 of 565

Allstar Performance Power Steering Reservoirs

Allstar Performance offers a selection of power steering reservoirs in lightweight aluminum for race vehicles. They have universal-fit tanks with baffle in the return fitting to prevent foaming and cavitation, as well as an economical version with no internal baffles. Both versions are available with or without mounting brackets. Allstar power steering reservoirs will meet your needs and your budget.

3.84 out of 5 stars ( 31 )

$87.94

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$89.99

Banks Power Ram-Air Differential Covers

Banks Ram-Air differential cover are unlike any others. After testing covers with flat-backs and those with larger fluid capacities, it was apparent that those covers do not cool as well as advertised and suffer from poor fluid dynamics. As a result, flat-backs reduce fuel economy. Banks Ram-Air differential cover extends lubrication life and retains fuel economy! Features: * A380 aircraft aluminum diecast for exceptional strength and precise fit * 12-point chrome plated flanged mounting bolts * 24 external radiator fins offer 534 sq. in. of surface area to ensure optimal heat rejection * Ram-Air system directs cool high-velocity air through radiator fins, eliminating the dead zone * Designed with breakaway scoops * Magnetic fill plug with 20 degree angle for easy fill--simplifies oil changes * Sight-glass with contrast screen and Viton® O-ring seal * Recessed magnetic drain plug simplifies oil changes

4.62 out of 5 stars ( 37 )

$395.00

Banks Power Ram-Air Transmission Pans

Banks Power's Ram-Air transmission pans use technology from their patented differential covers to extend fluid life by rejecting more heat than stock pans and many competitor pans. Additional capacity, a break-away Ram-Air scoop, and Banks FlowThru Fins aid in cooling, and cooler fluid means a longer-lasting transmission. Heat kills. That's why you need a Banks Power Ram-Air transmission pan for your diesel truck. Select the pan designed for your truck. Key features: * Engineered for the highest heat rejection, improved oil flow, and full oil drainage * FlowThru Fins efficiently transfer heat from the oil to the cover's exterior * More heat absorption surface area than stock * More cooling surface area than stock * Breakaway Ram-Air scoop design prevents pan damage * Allows full fluid drainage

5.0 out of 5 stars ( 1 )

$429.00

Dorman Power Take-Off Assemblies

Dorman power take-off assemblies are 100 percent new, not remanufactured, and rigorously tested for long-lasting durability and an extended service life. These PTOs transfer high-power and torque from your vehicle's engine or off a gear in the transmission to auxiliary components to reach peak vehicle speeds. They are direct replacements and easily connect to mating driveshaft on the application end. Restore drivability and all-wheel drive (AWD) functionality with Dorman power take-off assemblies.

5.0 out of 5 stars ( 1 )

$779.99

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$1,312.99

Banks Power Transcommand Transmission Management Kits

Banks Power Transcommand transmission kits virtually eliminate clutch slippage and will extend the life of your transmission. These Banks transmission kits continually correspond line pressure to power and load levels. The heavy load shifts are solid and decisive, yet the light throttle shifts are smooth and firm.

4.7 out of 5 stars ( 10 )

$289.56

On Sale

PRW Pro Series Flexplates

PRW offers Pro Series flexplates for a wide range of applications—raising the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. These replacements are engineered to handle extreme-duty applications and designed to take the punishment of today's high-horsepower engines. The 4mm thick centerplate provides a solid foundation for these new designs. Ring gears are precision-welded to meet SFI specifications, utilizing robotic machinery and cold-welding process. The steel flexplates are machined for excellence and rigorously inspected throughout the manufacturing cycle to ensure that customers receive the quality they've come to expect from PRW products. Additional details: * SFI 29.1 certified * Direct bolt-on component * Forged one-piece steel ring gears * 0.035 thicker than stock flexplates * Constructed from cold-rolled premium steel * Features double-welded ring gears for added durability

4.4 out of 5 stars ( 10 )

$206.58

$75.44

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$214.00

Twin Power Clutch Hubs

Replace your worn or broken clutch hub with Twin Power clutch hubs. These hubs are an accurate reproduction of the original and feature an aluminum hub construction with steel splines. Get a quality OE replacement part at a fraction of the cost with Twin Power clutch hubs.

Not Yet Reviewed

$106.42

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$231.99

Twin Power Extra Plate Clutch Kits

Twin Power extra plate clutch kits are the perfect solution for your high-performance and stroker engine needs. These kits feature race proven material friction plates on tempered steel cores, and a starburst groove pattern for maximum heat dissipation and oil circulation. All of the clutch plates are manufactured from high tempered steel and each kit comes complete with a pre-set clutch pack height (stock spec) for easy installation. A result of years of development and testing, these Twin Power extra plate clutch kits offer you superior performance to get the power to the ground!

Not Yet Reviewed

$256.99

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$399.99

Twin Power Drive Pulleys

Twin Power drive pulleys fit your Harley® with performance. These steel pulleys are built strong and are available in a choice of tooth counts. Choose quality, function, and value for your bike; choose Twin Power drive pulleys.

Not Yet Reviewed

$107.99

Twin Power Clutch Kits

Twin Power offers replacement clutch kits for a wide range of Harley-Davidsons®. Each kit includes fiber and steel plates, race-proven friction material, and tempered steel drive plates. Extra plate kits include a 15 percent stronger diaphragm spring for increased surface area and greater torque capacity. Maintain the highest shifting performance; service your bike with the clutch kit recommended for your application.

Not Yet Reviewed

$233.99

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$403.99

Yank Performance Power Adder Series Torque Converters

Yank Performance introduces its new line of Power Adder Series (PAS) converters. These are 9.5 in. billet converters based around the successful SS Series product line. This new line of converters is specifically designed for power adder cars with NOS, small turbo, or superchargers. These models will couple up quicker and multiply torque harder. They're rated to 650 RWHP. Order the model with bolt circle designed to fit your application. Additional details: * One-piece roller burnished flanged impeller hub * New Torrington bearings * Fully furnace brazed pump and impeller * Hardened input and turbine splines * Extra-wide oversized lockup clutch material to handle added abuse put down by more horsepower and torque

Not Yet Reviewed

$1,206.99

Yukon Gear & Axle Power Lok Positraction Internals

Yukon Gear & Axle Power Lok positraction internals will help you get your car or truck back on the road and working the way it is supposed to. After years and miles of use and abuse, your differential is going to need to a rebuild in order to operate efficiently. Yukon offers these inclusive kits for the maintenance overhaul. To ensure a top-notch gear set that will last longer than stock, Yukon utilizes better materials and manufacturing techniques than original specifications.

Not Yet Reviewed

$536.99

Twin Power Hydraulic Clutch Covers

Twin Power hydraulic clutch covers are made from 6061-T6 CNC machined billet aluminum for long lasting durability. These covers are designed for replacing a broken cover or just updating a worn cover. Twin Power hydraulic clutch covers are an easy bolt-on addition or repair for your motorcycle.

Not Yet Reviewed

$293.99

Twin Power Clutch Shells

Save yourself time and money with Twin Power clutch shells. Designed as a reproduction part, these OEM designed clutch shells install just as the stock one came out, with no modification. Get your motorcycle back on the road with Twin Power clutch shells.

Not Yet Reviewed

$305.59

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$536.99

Zoom Mustang Power Stage 3 Clutch Kits

Zoom Stage 3 clutch kits provide an increased clamp load and use an aggressive race-design, 6-paddle disc with torsion damper. The ceramic friction buttons are riveted to this paddle design for stronger engagement. If you're looking for increased bite on the street and track, these clutch kits are for you.

Not Yet Reviewed

$326.99

Continental Conti V Insta-Power Lawn and Garden V-Belts

Conti V Insta-Power (Aramid Classical) belts are built for strength and endurance. Every element of these belts is designed to deliver premium, long-life performance in demanding outdoor power equipment service. Insta-Power belts are engineered to take the abuse of repeated sudden shock loads, tolerate high ambient temperatures, and resist the damaging effects of oil and dust. They consistently deliver high-performance in lawn and garden drives up to 20 horsepower. The design also makes them ideal for other power equipment where reverse bend idlers, misalignment, and quarter-turn drives cause ordinary belts to fail. Don't settle for anything less than the precision engineered Continental Conti V Insta-Power lawn and garden V-belts designed to provide perfect fit, form, and function for your application. Product features, items, and specifications include: * Aramid Classical profile construction * Construction layers include a fabric jacket, natural rubber, and Aramid tension members * High-strength aramid tensile members are oil, heat, ozone, and abrasion-resistant * Engineered rubber cushion compound * Premium envelope construction * Working (outside) temperature range of -30 degrees F to 185 degrees F (-34 degrees C to 85 degrees C) * Electrically conductive in accordance with ISO 1813 * Conditionally resistant to oil

5.0 out of 5 stars ( 2 )

$15.99

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$64.99

Twin Power Rear Sprockets

Twin Power rear sprockets are quality steel OEM replacements available in chrome or zinc-plated finishes. They're designed to fit a variety of the Harley® Sportster and Big Twin models. Order the part recommended for your bike.

Not Yet Reviewed

$69.99

Twin Power 5-Stud Clutch Hub Assemblies

Does your Big Twin fail to deliver smooth clutch action? Twin Power 5-Stud clutch hub assemblies are the perfect replacements for the stock early clutches. They use five long studs to provide a more even adjustment, greater support, and less plate wobble. The assembled clutch hubs are complete with a spring pressure plate, a friction disc and rivets, a bearing retainer with bearings, and stud nuts.

Not Yet Reviewed

$167.99

PRW Gold Series Flexplates

PRW Gold Series flexplates are engineered to handle extreme duty applications and designed to endure the punishment of modern high horsepower engines. The 4mm thick centerplate provides a solid foundation for these direct bolt-on drivetrain components. Ring gears are precision double-welded, utilizing robotic machinery and cold-welding processes for added durability. These flexplates are rigorously inspected throughout the manufacturing cycle to ensure you receive the expected quality. They are available in a wide variety of configurations to precisely match your application. Raise the bar on your high performance vehicle with PRW Gold Series flexplates. Order the style recommended for your specific vehicle and engine size. Features and specs: * Designed to fit standard OEM, aftermarket replacement, and high performance torque converters * SFI 29.1 certified * Forged one-piece steel ring gears * 0.035 in. thicker than stock flexplates * Constructed from cold-rolled chromoly steel * Long lasting yellow zinc plated finish

4.0 out of 5 stars ( 52 )

$55.49

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$129.73

PRW Flexplate Fasteners

PRW flexplate fasteners are specifically designed to be stronger than OEM bolts. Using SCM-4141 alloy steel, they are cold-formed with rolled threads and heat-treated to ensure they are of the highest quality available on the market. PRW flexplate bolts are rated at 200,000 psi. Choose the thread size you need.

1.0 out of 5 stars ( 1 )

$11.49

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$89.95

PRW Flywheel Fasteners

PRW flywheel fasteners are specifically designed to be stronger than OEM bolts. They are cold-formed with rolled threads and heat-treated to ensure they are of the highest quality available on the market. PRW flywheel bolts are rated at 200,000 psi. Choose the thread size you need.

5.0 out of 5 stars ( 2 )

$13.93

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$25.54

PRW Billet Steel Flywheels

PRW billet steel flywheels are CAD-engineered, and precision CNC-machined from 1045 billet steel. Purpose built to handle extreme-duty applications and the punishment of high-horsepower engines, they are balanced and carefully inspected throughout the manufacturing process to ensure you receive the quality you expect from PRW. These billet steel flywheels feature removable counterweights for versatility and are SFI-certified.

5.0 out of 5 stars ( 6 )

$28.92

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$399.63

On Sale

aFe Pro Series Differential Covers

aFe Pro Series differential covers bring performance engineering to the protection of your axle's differentials. The durable cast aluminum construction with reinforced ribs provide maximum strength, while the machined fins and textured powdercoating provide a distinctive look. aFe Pro Series differential covers are available individually for front or rear with or without PRO Guard D2 synthetic 75W-90 oil and in complete sets with front, rear, and oil. Features: * Increased oil capacity * Internal/external ribs/fins transfer heat from oil to outside air for maximum cooling * Dual neodymium magnetic plugs--magnetic drain and deep reach fill plug—capture loose particles for maximum gear protection * Large oil level sight glass allows quick and easy oil inspection * Calibration plug set to the factory oil level to eliminate overfilling

4.68 out of 5 stars ( 19 )

$354.00

$179.00

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$457.00

PRW Platinum Series High-Inertia Flexplates

PRW Platinum Series high-inertia flexplates are engineered to handle extreme-duty applications and designed to endure the punishment of modern high-horsepower engines. The 4mm thick centerplate provides a solid foundation for these direct bolt-on drivetrain components. Ring gears are precision welded, utilizing robotic machinery and cold-welding processes for added durability. These flexplates are rigorously inspected throughout the manufacturing cycle to ensure you receive the expected PRW quality. They are available in a wide variety of configurations to precisely match your application. Launch your high performance vehicle harder with PRW Platinum Series high-inertia flexplates. Features and specs: * SFI 29.1 certified * Forged one-piece steel ring gears * 0.035 in. thicker than stock flexplates * Constructed with a solid flat plate of cold-rolled premium steel for improved 60 ft. times * Long-lasting platinum finish that helps prevent rust

4.0 out of 5 stars ( 1 )

$113.41

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$114.02

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