Transmissions & Transmission Parts

Tilton Hydraulic Release Bearing Anti-Rotation Studs

Tilton Engineering hydraulic release bearing anti-rotation studs are available for replacement or when building your own custom setup. They are constructed from high-quality materials to ensure optimum performance.

5.0 out of 5 stars ( 2 )

$22.10

McLeod RST Street Twin Clutch Kits

Intended for high-horsepower street fans, the McLeod RST Street Twin clutch kits are economically priced twin disc clutches that use your existing flywheel. Able to handle up to 800 hp, the RST Street Twin clutches remain completely street-drivable. The organic lined clutch discs provide smooth engagement with a soft pedal effort, making these clutch kits ideal for the street performance enthusiast. (For select vehicles where these clutches are not adaptable to your existing flywheel, a new flywheel is included in the kit.) Here are some additional features of the McLeod RST Street Twin clutch kits: * Alignment tool included * Lighter-than-stock pedal feel * Will bolt to factory flywheel * CNC-machined and anodized flywheel adapter ring * Organic disc facing for smooth and even clutch engagement with excellent release qualities * Low rotating mass for quick revs * Blanchard ground floater with multiple straps to reduce noise for streetability

4.49 out of 5 stars ( 84 )

$815.00

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$1,495.00

McLeod RXT Street Twin Clutch Kits

McLeod RXT Street Twin clutch kits are ideal for the extreme horsepower enthusiast who wants performance and economy. Capable of handling up to 1,000 hp, the RXT Street Twin clutches are for those who've kicked it up another notch—but still require streetability. The ceramic facing on the clutch discs provides slightly aggressive engagement with a soft pedal effort, making these clutches suitable for most street performance enthusiasts. Match your vehicle specs to the correct model from McLeod. Additional features include: * Alignment tool * Lighter-than-stock pedal feel * Available with dedicated flywheel or adapter ring for factory flywheel * CNC-machined and anodized flywheel adapter ring * Smooth engagement with excellent release qualities * Ceramic facings on disc increase holding power over similar organic linings * Low rotating mass for quick revs * Blanchard ground floater with multiple straps to reduce noise for streetability

4.68 out of 5 stars ( 47 )

$975.00

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$1,795.00

Sonnax Clutch Hubs

Many Sonnax clutch hubs are designed for the extra-duty requirements of drag racing with Powerglide and other GM transmissions, for instance. Machined from a high-quality medium carbon steel forging, most hubs will accept five friction discs for the added load capacity needed in high horsepower race cars. All splines and thrust surfaces are precision-machined to exacting tolerances, and the unique lube hole pattern is designed to reduce drag on the friction discs in low gear. Sonnax clutch hubs are also available with or without lightening holes to reduce rotational weight.

4.63 out of 5 stars ( 16 )

$37.80

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$313.99

BluePrint Engines Flywheels

It's important to keep your engine rotating smoothly. BluePrint Engines flywheels are designed with top-grade materials for long-life and the quality you're looking for. Their flywheels are available in popular sizes, weights, and balances to provide your engine with exactly what it needs! BluePrint flywheels are trusted from engine builders across the globe. Order the model recommended for your year/make and engine application.

4.78 out of 5 stars ( 9 )

$199.99

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$299.99

Sonnax Smart-Tech Drum Modules

Sonnax Smart-Tech drum modules for racing GM TH400 transmissions improve on-track performance and consistency, leading to quicker ETs, more wins, and greater reliability. The TH400 is preferred for its overall durability and multitude of available ratios, but is known to be heavier and less efficient than the popular two-speed Powerglide. Part of the TH400 inefficiency results from the fact that the direct drum counter-rotates, spinning backwards in 1st gear, brakes to a complete stop on the 1-2 shift, then goes from 0 RPM to input RPM on the 2-3 shift. Significant energy is wasted through this cycle that robs power, upsets traction on the shifts, and contributes to broken internal parts. Compared to aluminum direct drums, the Smart-Tech drum module reduces the weight of the counter-rotating components by over 3.3 lbs.! And more significantly, because the weight of the Sonnax counter-rotating parts is closer to the centerline, there's a 68 percent reduction in energy required to stop and restart during the 1-2 and 2-3 shifts. The benefits are increased wheel horsepower, better acceleration, less shock on the shifts, and improved durability. * Complete kit (34555-01K) replaces both forward and direct drums and includes everything from intermediate sprag to the pump; a selection of Sonnax input shafts is available separately. * 100 percent new content, no used core pieces * Includes larger-diameter, 36-element sprag and sprag race that works with OE intermediate clutches * Includes six-friction forward clutch pack and seven-friction direct clutch pack Contents: * Forward Piston Housing * Forward Piston * Forward Piston Return Springs (16) * Forward Spring Retainer * Forward Snap Ring * O-Ring 1.674 in. * Lip Seals (2) * Direct Housing Assembly * Direct Piston * Direct Piston Return Springs (26) * Direct Spring Retainer * Direct Snap Ring * O-Ring 2.737 in. * Sprag Shaft * Front Sprag Retainer Plate * Heavy-Duty Sprag 36 Element * Outer Sprag Race * Rear Sprag Retainer Plate * Sprag Retainer Screws (4) 6-32 x 5/16 in. * Quad Ring Seals (2) * Anti-rotation Seal Rings (2) * Drum * Pressure Plate * Outer Snap Rings (4) * Bearing Small * Forward Clutch Hub * Bearing Large * Direct Clutch Hub * Steel Clutch Plates (4) .060 in. * Steel Clutch Plates (11) .077 in. * Friction Clutch Plates (13) .080 in. * Clutch Separators (60) .103 in.

Not Yet Reviewed

$3,052.40

Advance Adapters AX15 Manual Transmissions

Advance Adapters AX15 manual transmissions offer medium-duty power to handle the torque and horsepower of most V8 engines. These AX15 transmissions feature a 13 degree tailhousing rotation for a perfect direct replacement for your older TJ Wrangler. Or, step up from light-duty with a successful retrofit of your stock transmission to these AX15 transmissions. Make your swap more powerful with Advanced Adapters new--not rebuilt--AX15 manual transmissions.

Not Yet Reviewed

$2,156.44

Boss Hog Street Bandit Torque Converters

Torque converters are considered one of the most mysterious mechanical components in today's vehicles. They function like a clutch, and keep the engine running even when the vehicle comes to a halt. By designing the stall speed to match both the engine and desired stall speed, ACC Performance converters help low-end idle speeds, improve performance, and acceleration. ACC Performance Products has emerged as an out-right leader in torque converters and here's why: * Boss Hogs are welded, not furnace-brazed; furnace brazing is not the best way to adhere torque converter components, it will erode and ruin the stators and all rotating parts * Industrial Torrington bearings handle more torque than smaller, uncased needle bearings * Aircraft aluminum washers instead of fiber washers put more horsepower and torque directly to the ground * ACC converters are hand-built and tested to ensure that you get the best converter money can buy * With returns below one percent, you are assured of the highest quality parts available * Street Bandit converters are designed to handle as much as 650 hp * Custom-engineered turbine hubs maintain the highest quality, strength, and durability * Stators are built with high-flow vents and channels for greater cooling to handle greater power and higher temperatures * Engineered with a single bolt pattern that makes ACC converters surprisingly light to free up your motor and allow it to gain rpm quicker Notes: * Boss Hog Street Bandit torque converters are not designed to handle the extreme shock and abuse of nitrous oxide or trans-brakes * It is imperative that a transmission cooler be added with any torque converter that is rated over stock stall speed

3.97 out of 5 stars ( 104 )

$388.96

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$739.73

Centerforce SST Clutch and Flywheel Kits

Introducing the new Centerforce SST (Solid Street Twin) clutch and flywheel kits—engineered and developed for vehicles producing 400 to 925 lbs.-ft. of torque. The SST discs utilize solid hubs to reduce the rotational weight on the input shaft for quick clean shifts. The discs in the assembly are built using high-quality friction materials, for smooth engagement and longevity. These SST clutch and flywheel kits feature a lightened billet steel flywheel, providing low inertia resulting in quicker rpm and the Centerforce anti-rattle system to reduce floater rattle/noise. In addition, no complicated setup or adjustments are required, just bolt in the clutch and flywheel kit application you need—and "get a grip"! For streetcar enthusiasts looking for a high-quality Twin disc clutch system, the Centerforce SST clutch and flywheel kits are an economical choice. Key features and benefits: * Positive drive floater * Easy pedal * Precision balanced * Smooth engagement * Spec card included * ARP hardware * Solid hub for light weight and quick shifts * Simple install

4.63 out of 5 stars ( 8 )

$1,259.95

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$1,312.95

Ford Performance Parts Flywheels

Ford offers a variety of Ford Performance Parts flywheels and flexplates for a variety of Ford engines, ranging from the versatile small block V8 up to the mighty 460. They offer cast iron flywheels for stock applications, plus billet steel and aluminum models, many with reduced rotating mass, for street/strip and racing use. Their flywheels and flexplates are available with 157, 164, or 176 teeth ring gears to suit your application and many are SFI-approved.

4.66 out of 5 stars ( 88 )

$286.99

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$424.99

Perfection OE Replacement Flywheels

Perfection Clutch offers OE replacement flywheels for applications spanning a half-century. Machined from ductile iron, the flywheels are available in a variety of styles, sizes, and tooth counts. Flywheels serve three purposes: First, to maintain a rotating mass (inertia) to assist the engine rotation, providing a more consistent delivery of torque during running. Second, to provide a ring gear for the starter motor to engage on. And third, to provide one of the driving friction surfaces for the friction disc. Over a hundred models are available; select the replacement recommended for your vehicle.

4.67 out of 5 stars ( 51 )

$54.50

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$233.99

TCI Sprag and Drum Assemblies

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.

4.83 out of 5 stars ( 6 )

$517.95

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$548.95

Boss Hog LS Street Bandit Torque Converters

Torque converters are considered one of the most mysterious mechanical components in today's vehicles. They function like a clutch and keep the engine running even when the vehicle comes to a halt. By designing the stall speed to match both the engine and desired stall speed, ACC Performance converters help low-end idle speeds, improve performance, and acceleration. ACC Performance Products has emerged as an out-right leader in torque converters and here's why: * Boss Hogs are welded, not furnace-brazed; furnace brazing is not the best way to adhere torque converter components, it will erode and ruin the stators and all rotating parts * Industrial Torrington bearings handle more torque than smaller, uncased needle bearings * Aircraft aluminum washers instead of fiber washers put more horsepower and torque directly to the ground * ACC converters are hand-built and tested to ensure that you get the best converter money can buy * With returns below one percent, you are assured of the highest quality parts available * LS Street Bandit converters are designed to handle as much as 650 hp * Custom-engineered turbine hubs maintain the highest quality, strength, and durability * Stators are built with high-flow vents and channels for greater cooling to handle greater power and higher temperatures * Engineered with a single bolt pattern that makes ACC converters surprisingly light to free up your motor and allow it to gain rpm quicker Notes: * LS Boss Hog Street Bandit torque converters are not designed to handle the extreme shock and abuse of nitrous oxide or trans-brakes * It is imperative that a transmission cooler be added with any torque converter that is rated over stock stall speed

3.5 out of 5 stars ( 10 )

$576.98

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$690.04

RAM Billet Aluminum Flywheels

If you're building an all-out competition car, then you need a lightweight flywheel that will allow the engine to rev quicker and not eat up a lot of power. RAM billet aluminum flywheels greatly reduce rotating weight to permit quicker revving and higher power output, but still retain enough mass to resist heat distortion that could adversely affect clutch performance. RAM billet aluminum flywheels are made in America and produced in house. All RAM flywheels are computer-balanced within a 1/2 oz., surface ground (which results an optimum mating surface), and are ready to run out of the box. SFI-approved, these flywheels are CNC-machined from certified materials and have rugged steel friction-surface inserts. RAM's billet aluminum flywheels feature a 1/4 in. thick friction insert to dissipate heat away without distortion. Technical note: As it spins, a heavy flywheel stores more energy than a lighter one. Engine and gearing combinations that require more power or inertia to make the car launch without bogging the motor need heavier flywheels. However, heavier flywheels accelerate slower. Lighter flywheels create less inertia at launch, but accelerate quicker through the gears. To effectively use a lighter flywheel, you must consider the car's weight, operating rpm of the engine, and, most importantly, the gearing. Too little gear will cause the engine to 'bog' on launch.

4.77 out of 5 stars ( 31 )

$339.00

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$519.00

South Bend Clutch Stage 2 Daily Driver Clutch Kits

South Bend Clutch Stage 2 Daily Driver clutch kits are engineered for vehicles with high performance modifications. The heavy-duty pressure plate has an increased clamp load with little or no increase in pedal pressure to offer stock feel, while increasing strength and durability. The organic disc material has a high metal content that increases the co-efficient of friction by two times over a stock lining. This greatly increases rotational strength up to a 12,000 rpm burst point for high performance. South Bend Clutch Stage 2 Daily Driver clutch kits are recommended for daily performance, street, and moderate race vehicles. Select the kit designed for your application needs.

3.17 out of 5 stars ( 6 )

$227.87

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$3,422.27

On Sale

Scott Drake Clutch Linkage Brackets

Scott Drake clutch linkage brackets allow the clutch equalizer bar to rotate front to back. These equalizer pivot mounts are made from the original Ford prints and are stamped from heavy-gauge steel for strength. They're available in different styles for fitment on nearly a hundred Ford and Mercury applications from the 1960s and '70s.

4.08 out of 5 stars ( 12 )

$71.89

$64.70

Sonnax 10-Clutch Drum Kits

Sonnax 10-clutch drum kits are optimized for Powerglide performance applications. Using the patented Sonnax 10-clutch drum system, the drum and piston accept 10 frictions and 10 Kolene steels, increasing lockup surface to allow significantly more torque than modified OE drums. The drum features a piston bore that is .060 in. deeper for greater piston travel. Kits include: * Complete 10-clutch drum kit with all related parts, including installed PTFE-coated bushing * Includes ten .060 in. frictions and ten .060 in. thick, 12-tooth Kolene steels * Excess material removed from high-strength, cast steel drum to reduce rotating mass * 6061 forged aluminum piston will not crack at high operating pressure like cast pistons * Forged chromoly steel clutch hub with lightening holes

5.0 out of 5 stars ( 1 )

$590.93

Steeda Firewall Cable Adjusters

Are you looking for an easy way to adjust your clutch? Steeda's firewall mounted clutch adjusters let you adjust your clutch engagement without having to crawl under the car. Just turn the adjuster knob on the firewall and you're done! Steeda designed these adjusters with a bigger adjustment range and a locking tab to keep the adjuster base from rotating, allowing you to make adjustments with one hand.

5.0 out of 5 stars ( 3 )

$79.95

TCI Circle Track Torque Converters

Designed especially for classes where a functional torque converter is required, these Circle Track converters are built to maximize efficiency and reduce slippage. These converters can reduce lap times by over a tenth of a second when compared to a stock converter. Other benefits include a rotating weight reduction of several pounds (all removed from the outside diameter, and thus improving engine braking in corners) and reduced transmission operating temperatures.

1.75 out of 5 stars ( 4 )

$460.95

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$616.95

Summit Racing™ Automatic Transmission Sprags and Races

In an automatic transmission the sprag also called a one-way, or roller clutch is a mechanical clutch designed to lock up or stop a drum from rotating when a clutch is applied during an up shift. The torque load they are required to hold is usually a lot, even with stock engines. As horsepower and torque go up the demand on these sprags does too, which can lead to failures. By adding extra rollers or elements and hardened steel outer races you can increase the torque carrying capacity and durability of your transmission. Summit Racing™ Automatic Transmission Sprags and Races offer many different options, select the right one for your transmission.

5.0 out of 5 stars ( 1 )

$86.99

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$99.99

Sonnax Heavy-Duty Reverse Pistons

Sonnax heavy-duty reverse pistons offer high-strength that will not break at racing pressures. Made from 6061 T-6 billet aluminum, Sonnax reverse pistons are configured to utilize four frictions and five steels, but can also be machined to accept additional frictions and steels for trans-brake applications. They're customizable for any application. To reduce rotating weight in Circle Track applications, two frictions (rotating) and seven steels (non-rotating) can be used. Sonnax heavy-duty reverse pistons include inner and outer seals.

5.0 out of 5 stars ( 1 )

$129.60

ACDelco Automatic Transmission Case Extension Seals

ACDelco automatic transmission case extension seals are manufactured to fit your GM vehicle, and to provide the same OE performance, durability, and service life. Located between the extension housing and the rotating slip-yoke, they will form a fluid-tight seal and maintain leak-free operation. These replacements are available in a variety of styles, delivering proper fit and performance in specific vehicles. Order the model recommended for your application.

5.0 out of 5 stars ( 1 )

$3.99

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$10.99

Sonnax 10-Clutch Drums

Sonnax 10-clutch drums are optimized for Powerglide performance applications. Using the patented Sonnax 10-clutch drum system, the drums accept 10 frictions and 10 steels, increasing lockup surface to allow significantly more torque than modified OE drums. They feature a piston bore that is .060 in. deeper for greater piston travel than was available from earlier Sonnax 10-clutch drums. Features include: * Drum holds .060 in. frictions and .060 in. thick steels (10 each) * Excess material removed from high-strength, cast steel drum to reduce rotating mass * Accepts 24 or 12-tooth steels * Use with Sonnax clutch pistons and 10-clutch hubs with lightening holes Note: Sonnax 10-clutch drums and pistons should only be used as matched parts.

5.0 out of 5 stars ( 1 )

$185.26

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$451.19

FTI Performance SST Series Torque Converters

FTI Performance SST Series custom-order torque converters are available for use with a variety of transmissions, including Powerglide, THM350, and THM400. The 9 in. units are used by top drag racers. A torque converter is what transmits torque from the engine to a rotating driven load. It's a type of fluid coupling which allows the engine to spin somewhat independently of the transmission. SST Series torque converters are available with a 0-blade stator for a turbo spline, or the looser 6T stator model.

Not Yet Reviewed

$1,149.00