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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Bowler Performance All-in-One Transmission Wiring Harnesses

Bowler Performance All-in-One transmission wiring harnesses for the Tremec T-56 Magnum transmission comes equipped with all the connections pre-wired into one harness for a simple installation and ease of use. The small epoxy sealed controller is mounted to the VSS output using the existing bolt, and once the unit is powered up, you will be able to connect via Bluetooth to your Apple or Android smartphone using Bowler's free app. The app will give you the ability to customize the input and output settings for each feature to ensure proper operation in your vehicle. The perfect finishing touch for any Tremec T-56 Magnum conversion, Bowler's All-in-One harnesses eliminate the need for any additional equipment to operate the reverse lock out or generate the correct speedometer signals coming from your Tremec T-56 Magnum. Previously, you would have needed up to five separate parts to perform all the same functions wrapped one of these harnesses. The more technology we incorporate into our hot rods sometimes requires specific input signals to allow everything to function correctly. With the two speed outputs available in these harnesses, you can independently control the output of each one further eliminating any need for additional equipment and connections. Regarding the reverse lockout, Bowler has incorporated the same speed setting feature as the OEs into the All-in-One harnesses, giving you better control over when the lock out is triggered. Bowler's All-in-One harnesses give you much greater flexibility in the components you are able to use and require less time wiring everything up, providing an easier solution for setting up your Tremec T-56 Magnum transmission. Choose the harness version designed for your specific transmission make. Additional notes: * Harnesses utilize a small, built in, epoxy sealed box that will control each of the three functions with power and grounding for each function through a switched +12 V circuit and a wire connected to the negative battery post or engine block. * Control of the reverse lockout solenoid is based on a user defined speed setting (default is set at locked above 4 mph and unlocked at 0 to 3 mph), eliminating the need for a separate lock-out control box. * For your electronic speedometer, the harness is equipped with two speed sensor outputs; the speed sensor outputs generate a square wave signal that goes from about -5 to roughly +5 V, varying in frequency as the speed changes. * Output will automatically shift and give you 0 to +10 volts for EMC input needing positive only signal. * The two speed sensor outputs are completely independent and can be calibrated separately with any pulse count and ratio you want, and are able to drive any common speedometer, cruise control, or ECM. * Tremec T-56 Magnum reverse lock-out module VSS with dual output, pre-set as GM 40-pulse output on one and 16-pulse output on the other and can be adjusted with your iOS or Android device. * Includes wiring for reverse lights, reverse lock-out, and vehicle speed sensor.

4.0 out of 5 stars ( 5 )

$324.99

B&M Neutral/Reverse Safety Switches

B&M neutral/reverse safety switches are the perfect safety devices for your car. They will only allow your car to start when it is in park or neutral, not while it is in gear. If it starts in gear, you can imagine the damage that could be done. They can also be used to turn on your backup lights when your car is in reverse.

4.49 out of 5 stars ( 92 )

$19.98

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$51.19

American Powertrain Reverse Lockout Modules

American Powertrain reverse lockout modules are safety devices to save your transmission by preventing shifting into reverse on the freeway. These control solenoids communicate with the vehicle speed sensor in the transmission to let them know you are at zero mph so you can safely shift into reverse, rather than using a signal from the brake pedal.

5.0 out of 5 stars ( 3 )

$135.45

Sonnax Valve Body Reaming Fixtures

In certain applications there is no way to pilot a reamer to repair a worn valve body, forcing rebuilders to purchase new ones. This patented self-aligning fixture with specially designed tool kits allows these valve bodies to be repaired. The fixture provides an external rigid pilot bore for the reamer and guide pin. The self-aligning feature allows the fixture to be used on multiple valve bodies and valve bores. The fixture base is large enough to provide ample support for the valve body. Various transmissions locate some valve bores in the pump body rather than the valve body. These larger pump bodies do not readily fit onto the standard VB-FIX base plate. Sonnax offers an oversized pump base plate, VB-06, that allows large passenger vehicle pump bodies to be easily mounted and clamped to the VB-FIX for repair. Additional notes: * Patented, unique self-aligning device produces consistent, reliable results and eliminates the potential for reaming failures * Special tool kits have been designed to service a specific valve train bore, and must be used in conjunction with the valve body reaming fixture VB-FIX. Part numbers for these kits begin with an "F-" to distinguish them from the traditional Sonnax tool kits that can be used as standalone tools. * Contents: -- Base plate standard -- Clamp mounting plate -- Clamp plate round -- Outer races (2) -- Inner race -- Studs (3) threaded -- Washers (3) flat -- Wing nuts (3) -- Socket cap screws (4)

Not Yet Reviewed

$219.99

Sonnax Automatic Transmission Electro-Hydraulic Control Modules

The GM 6L80 and 6L90 TEHCM houses the transmission control module (TCM), or computer. The eight solenoids are connected to the TCM via a lead frame, all of which are over-molded in the plastic housing and not accessible or serviceable separately. Component fails and circuit faults in the GM 6L80 and 6L90 TEHCM are common, and result in drivability complaints and trouble codes which can only be remedied with a replacement unit. These automatic transmission electro-hydraulic control modules by Sonnax serve as a durable, reliable OE performance solution at a significant savings over OE replacement. Each Sonnax TEHCM GM6L-TEHCM-C6 unit goes through a rigorous cleaning and inspection process where all failed components are replaced. Electro-hydraulic testing in a simulated drive test ensures full functional performance consistent with a new OE TEHCM. A vehicle VIN remains on the Sonnax remanufactured TEHCM and will be overwritten by a transmission shop technician with the new vehicle VIN during the reprogramming process. After installation, the TEHCM must be reprogrammed on the vehicle using a J2534 device in order to function correctly. The fully tested TEHCM is serialized, and the test data stored and packaged in Mylar bag with a protective connector cover to prevent inadvertent static discharge issues during the shipping, handling and receiving processes. Part information details: * Ultrasonically cleaned and thorough flushing of solenoids to remove all dirt and debris—no matter how hidden * New pressure switches installed * New filter plate/screen included * Fully electro-hydraulically tested to comply with OE performance * Must be reprogrammed after installation using a J2534 device for proper function

4.0 out of 5 stars ( 2 )

$225.99

Perfection Clutch Slave Cylinders

Perfection clutch slave cylinders convert non-hydraulic pressure into hydraulic pressure, in order to move other devices located at the other end of the hydraulic system. These assemblies are engineered for faster installation than original equipment, using existing lines and no special tools. OEM plastic cylinders are prone to cracking, but Perfection cylinders are made from solid blocks, bored and honed for accurate tolerances and maximum durability. Hundreds of models are available for applications from 1957 and up—including Ford, Chevy, GMC, Mazda, Pontiac, Nissan, Toyota, and other brands. Choose the configuration and cylinder options recommended for your vehicle.

4.0 out of 5 stars ( 4 )

$8.99

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$264.99

RAM Force 10.5 Dual Disc Clutch Kits

RAM Force 10.5 dual disc clutch kits have a strap-driven floater plate and are precision-balanced for quiet operation. The sprung hub top disc absorbs shock and reduces driveline noise. Force clutches are available with your choice of a 300 Series friction disc or a 900 Series disc. The 300 Series organic disc models are capable of handling 500 to 800 hp; while the 900 Series metallic models can handle between 600 and 1,200 hp. These kits use a marcel spring—a thin, wavy device that helps to eliminate the go-or-no-go tendency that similar dual disc clutches have. RAM Force 10.5 dual disc clutch kits include a billet aluminum, SFI-certified flywheel with a steel insert that has sufficient mass to draw heat away from the clutch without distortion. Some kits are available with a steel flywheel. Order the model recommended for your vehicle and engine application.

4.0 out of 5 stars ( 4 )

$1,425.00

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$1,859.00

Steeda Tri-Ax/F Ford Focus Short-Throw Shifters

Shift your Focus faster and easier with Steeda's Tri-Ax/F short-throw shifters. The Tri-Ax/F shifters are more than just short handles. Steeda re-engineered the entire shift mechanism with an improved pivot ratio so you can enjoy faster shifts without having to bend down to reach the shift knob. The shift knob is located in a more comfortable position than on the too-tall factory shifters. All Tri-Ax/F shifters also include Steeda's Shift Assist, which improves spring tension to make quick shifts from second to third gear easier. These simple devices let you power shift with confidence, knowing that you will find the right gear every time.

5.0 out of 5 stars ( 7 )

$169.95

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$189.95

XDR Magnum Grip Plates with Electrical Buttons

XDR Magnum Grip plates with electrical buttons put you in control of your accessories. Equipped with two 12 V momentary switches, the large red buttons of these side grip assemblies can be used to activate a push-to-talk communication system, a line/lock, winch in/out, or any devices that only need momentary power. Their wires are completely hidden in a channel on the shift handle side of the grip plate, keeping them out of the way and creating a clean presentation. XDR Magnum Grip plates with electrical buttons are constructed from tough polycarbonate with a textured diamond pattern for a sure grip when shifting gears, no matter what conditions the weather throws at you.

Not Yet Reviewed

$51.19

XDR Magnum Grip Hill Killer Shifters

XDR Magnum Grip Hill Killer gated shifters have an ergonomic design and a modern aggressive look. These gated shifters are designed to be used as a safety device when attempting steep hill climbs. This is accomplished by eliminating the reverse lockout feature of the ratchet gate plate—ensuring quick shifts from forward to reverse gear in an attempt to save the front-end from going over backwards when climbing steep hills. XDR Magnum Grip Hill Killer gated shifters are available to fit Side x Sides with or without factory shift boot. Features include: * CNC-machined billet aluminum construction * Replaceable Midnight black polycarbonate side grip plates that incorporate a diamond design pattern for a sure grip when shifting * Spring-loaded stainless steel trigger for positive locking and unlocking in and out of park * Hill Killer gate plate construction—10-gauge 304 stainless steel for durability and long life * Tough MIL-spec anodized finish * Side grip plates are customizable (with numerous colors of the optional polycarbonate side grip plates, or the real rosewood option) * All necessary hardware and easy-to-follow instructions

5.0 out of 5 stars ( 3 )

$357.95

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$649.95

American Powertrain Hydraulic Clutch Release Systems

American Powertrain hydraulic clutch release systems can help get your coupling device shifting properly to engage or disengage power from the motor to the wheels. American Powertrain systems are engineered to help you shift the right way for miles of smiles wherever you drive. Order the kit designed for fitment with your vehicle application.

2.0 out of 5 stars ( 2 )

$719.14

Sonnax Park Pawl Actuator Retaining Clips

No one knows transmissions like Sonnax, which is why their park pawl actuator retaining clips work exactly like your OEM parts for the parking pawl device used in your vehicle's automatic transmission. Pawls help lock your wheels by locking the transmission's output shaft, stopping any rotation when the shifter lever is placed in the parking position, and these clips hold the pawl pin/shaft in place. Trust your vehicle to stay where you leave it when you order the Sonnax park pawl actuator retaining clips designed for your application!

Not Yet Reviewed

$8.02

Trail-Gear Full Spools

Trail-Gear full spools replace the differential carrier, locking the axle shafts together, offering low-cost traction. Locking the axles provides maximum traction for off-road use; they are not recommended for use on the pavement. They should be used only in the rear axle for maximum traction and turning ability. The simplicity of these devices is that they have no gears, clutches, or moving parts to worry about.

5.0 out of 5 stars ( 2 )

$149.99

On Sale

XDR Off-Road Magnum Grip Dual-Gated Shifters

XDR Off-Road Magnum Grip Dual-Gated shifters are designed for use on 2014-20 Polaris RXR XP and 2017-19 Can-Am Maverick X3 side-by-sides. This trick shifter features two shift patterns: standard-gated and "Hill Killer"—designed to be used as a safety device climbing steep hills. Simply drop the shifter down into the lower Hill Killer shift gate, which eliminates the reverse lockout feature of the ratchet gate plate. This ensures quick shifts when needed from forward to reverse gear to save the front end from going over backward when climbing steep hills (recommended for emergency situations only). Order the model recommended for your application. Features, items, and specs: * CNC billet aluminum Magnum Grip shift handle * Ergonomic design for a modern aggressive look * Replaceable midnight-black polycarbonate side grip plates * Spring-loaded stainless steel trigger for positive locking/unlocking in and out of gears * Shifter gate assembly constructed from heavy 304 stainless steel for precise shifts and durability * One-piece CNC-machined 304S stainless steel gates * Military-spec anodized black finish, bushing rod, and trigger * Built-in wire channel for optional 2-button side-grip plates * All necessary hardware * Easy-to-follow installation instructions * Multiple colors and finishes of side grip plates available

Not Yet Reviewed

$749.95

$499.95

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$575.95

On Sale

XDR Hill Killer Gate Plates

The Hill Killer gate plates by XDR replaces the reverse lock-out gate plate that comes standard for magnum grip ratchet shifter product. These gate plates are designed specifically to be a quick and easy change over intended for use as a safety device when attempting steep hill climbs. This is done by eliminating the reverse lock-out feature of the ratchet gate plate, ensuring quick shifts to reverse in an attempt to save the front end from going over backwards when climbing steep hills. The XDR gate plates are constructed of 304 stainless steel for durability and long life. Warning: It is not recommended to intentionally and/or repeatedly go from a forward gear to a reverse gear while moving for fear of personal safety, and to avoid potentially damaging drivetrain components of your vehicle.

Not Yet Reviewed

$119.95

$37.17

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$73.05

TCI Wireless EZ-TCU Transmission Controllers

TCI Wireless EZ-TCU module kits make it even easier to control your transmission and even remotely disable it to prevent theft. These Bluetooth-enabled controllers allow you to control shift points, firmness, and aggressiveness. Data logging and self-diagnostics make it possible to optimize tuning intuitively--without the need for software, a hand-held unit, or cabling. And they also feature anti-theft—the ability to deactivate your car. TCI Wireless EZ-TCU transmission controllers feature: * Easy transmission control from your phone or tablet; no laptop or software needed * Maximum electronic control over the shift points, shift firmness, and shift aggressiveness * Data logging and self-diagnostics for optimal tuning * Anti-theft feature for disabling vehicle through app * Compatible with 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, and TCI 4x and 6x transmissions * Available for iOS and Android

2.33 out of 5 stars ( 3 )

$1,026.95

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