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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.
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.
FiTech Go Shift transmission controllers are standalone electronic transmission control kits. If you plan on upgrading your transmission and you're having trouble with the wiring, back up lights, or shift points, the new Go Shift system is for you. Now you can have the luxury of a modern transmission for better response, better fuel economy, and overall reliability thanks to this system.
( 10 )
$599.00
DIYAutoTune MicroSquirt CAN transmission controllers with sub-harness seamlessly control your transmission. They provide a simple, plug-and-play integration with MS3-Pro, and directly mates with their LSx drop-on harnesses. They are available with a 4L80E or 4L60E sub-harness. Included with your DIYAutoTune MicroSquirt controllers: * 6-pin black connector for power, ground, and CAN bus * 8-pin gray connector for additional inputs * 18 crimp pins for the above connectors Note: * Harness for GM 4L60E transmissions with or without the LUF (lock up feel) control solenoid. You can also wire the harness to communicate with an MS2, another MicroSquirt EMS, MS3-Pro, or MS3 over the CAN bus. * Harness for GM 4L80E transmission includes wiring for the input shaft speed sensor, and can be used as a standalone transmission control solution with minimal wiring involved. But was designed to be a full plug-and-play, zero wiring solution with DIY 24x and 58x harnesses.
( 4 )
$499.99
Summit Bucks
HalTech Nexus Ti4L transmission interface kits allow easy control of GM's popular 4L series of automatic transmissions. Designed as an add-on transmission controller expansion module for the NEXUS ECU and VCU range, the Ti4L will be programmed via the HalTech NSP software, or Rebel LS users will be able to follow the simple setup wizard in the Haltech Connect app. Easy set-up is not the only feature! They have also developed smart long-term learning strategies via closed-loop line pressure control, which means shifting gets better the more you drive. Features include: * Plug-and-play with Nexus Rebel LS terminated harnesses * Easy setup wizard for Rebel LS ECU * Programming and setup via NSP Software or Haltech Connect app * Long-term learning strategies via closed-loop line pressure control * Haltech 500 psi pressure sensor included Compatibilty: * Haltech Nexus Series ECUs and VCUs, including Rebel LS * GM 4L60E * GM 4L65E * GM 4L70E (non-4x4 2006-08 only) * GM 4L80E * GM 4L85E nNon 4x4 1994 and newer only) Note: Does not support Haltech Elite/Platinum/Legacy ECUs
Not Yet Reviewed
$457.99
These Chevrolet Performance automatic transmission controllers include the wiring harness, controller, software, and laptop hookup. They are designed to allow for the use of electronically controlled transmissions in early model vehicles. Chevrolet Performance automatic transmission controllers are fully programmable for upshift, downshift, part throttle and wide-open shifts, and shift firmness. They come preprogrammed--just enter your rear tire diameter and rear axle ratio and go, or create your own custom shift characteristics. Chevrolet Performance automatic transmission controllers were originally developed by GM Racing for off-road truck racing. They have the ability to record and graph drag racing data like time, speed, shift point, engine rpm, and more.
( 1 )
$1,697.34
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$1,948.50
TCI EZ-TCU automatic transmission controllers are fully configured right out of the box--no tuning is necessary. Simply install them with the included instructions and then start the systems by answering the simple setup wizard questions on the included hand-held unit. They're capable of real-time switchable calibrations, which allows for multiple setups. The multi-shift settings include a full manual mode for using bump or paddle shifters. The TCI EZ-TCU automatic transmission controllers allow for maximum electronic control over shift points, shift firmness, and shift speed. Self-diagnostics enable users of every skill level to fully utilize their capabilities. Be sure to match your particular transmission with the correct EZ-TCU controller, as some models are designed for pre-2009 applications ... and other models are for 2009 and later.
( 37 )
$1,025.95
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 )
$1,026.95
TCI TCU 2.0 automatic transmission controllers are fully programmable with the included T-Com 2.0 laptop software. They feature Dual Tune Technology, so you can create and easily switch between two completely different shift modes--daily driving or performance. The ability to make infinite adjustments to shift points and line pressure provides for maximum performance from automatic electronic transmissions and they are paddle/button shifter compatible. TCI designed the controller to be compact with LED diagnostics and data logging functions. TCU 2.0 is also compatible with FAST EZ-EFI 2.0 and XFI fuel injection systems through the CAN/BUS connection and can be configured to read engine sensors and transmit data to other modules and displays. Twelve outputs allow for precise, closed loop current control and programming of non-transmission control functions, such as engine shutdown after a specified idle duration. Features and benefits: * Fully programmable with T-Com 2.0 laptop software * Create and switch between two different shift modes * Make infinite adjustments to shift points and line pressure for maximum performance * LED diagnostics * Data-logging functions * CAN/BUS capability to share data with other systems * Paddle/button shifter compatible * Twelve outputs allow for precise, closed loop current control and programming of non-transmission control functions
Not Yet Reviewed
$1,122.95
Chevrolet Performance automatic transmission wiring harnesses feature GM-recommended design as valid replacements for your vehicle's failing electrical system. Manufactured to provide you with the same performance, durability, and service life you expect from General Motors, they'll help get your drivetrain working properly again. Order the Chevrolet Performance automatic transmission wiring harnesses designed for your application.
Not Yet Reviewed
$281.67
These Lokar indicator control modules are designed to control the LED indicator display. They are made of billet aluminum and include all necessary mounting hardware. They are available for a dash mount or shifter boot mount, and the LED display is sold separately.
( 6 )
$277.95
The Holley Sniper Transmission Controller (STC) is designed for common GM and Ford electronic 4-speed automatic transmissions. Three part numbers cover a complete range of applications—all Sniper EFI systems, Sniper 2 EFI-specific (M8 CAN connection), or a full standalone unit. The Sniper specific applications connect to your Sniper EFI system via CAN bus and are programmed through the existing Sniper 3.5 in. touch screen. No programming is available with PC computer software; however, the transmission functions can be data-logged and reviewed with Sniper PC software. The Standalone version includes a dedicated 3.5 in. touch screen and is primarily intended for carbureted engine combinations. GM and Ford 4-speed electronic overdrive transmissions are simple in operation. They have four speeds, with the top gear being an overdrive; and all have a lockup torque converter that eliminates any slippage when the lockup is applied. With a stock torque converter, the lockup should only be applied under light throttle conditions or excessive wear will occur. Upshifts, downshifts, and torque converter lockup are based on vehicle speed and throttle position (or optionally the MAP sensor) and are adjustable with the 3.5 in. touch screen. P/N 551-100: Replacement controller unit only P/N 551-101: Controller unit and power harness only P/N 551-102: Standalone kit for carbureted applications (includes power harness and hand-held programmer) P/N 551-103: Controller unit and power harness for use with Sniper 2 EFI systems Holley Sniper Transmission Controller features: * Adds electronic transmission control functionality to a Sniper 2 * Controls conventional electronic 4-speed transmission applications. GM 4L60/70/80E and Ford AODE and 4R70W - transmission specific harnesses sold separately: -- 558-405 – GM 4L60/70/80E -- 558-455 – 2009+ GM 4L60E -- 558-470 – 1998+ Ford 4R70W/4R75W -- 558-471 – 1992-1997 Ford AODE/4R70W * Tuning is performed through the 3.5 in. touch screen LCD (included with the Standalone version). Future compatibility will include 5 in. display and Bluetooth module * Tune upshifts, downshifts and WOT shift points * Full programmability of torque converter lockup * Full tuning of transmission line pressure (shift firmness) * Controls and layouts interface mirror Dominator and Terminator X MAX ECUs (except no paddle shift) * A MAP sensor is needed if using MAP for line pressure, which is usually only done with forced induction applications
( 1 )
$457.95
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$668.95
These TCI 6x 6-speed GM 4L80E automatic transmissions are the first aftermarket 6-speed automatic transmissions capable of handling 850 hp. They give you six forward gears (2.97, 2.31, 1.57, 1.18, 1.00, and 0.75) for quicker acceleration and increased fuel economy at cruising speeds. The TCI 6x 6-speed GM 4L80E automatic transmissions are versatile transmissions that fit Chevy small block, big block, and LS Series engines. They also feature a compact design, allowing them to work in a variety of vehicle applications, including pro touring, street, and race vehicles.
Not Yet Reviewed
$7,518.95
MSD Atomic transmission control modules are designed to adjust the operating parameters of later model electronically controlled 4-speed automatic overdrive transmissions. They're simple to configure with the supplied hand-held monitor--no PC required. You now have access to adjust shift points, adjust torque converter clutch behavior, select different levels of shift firmness, select between auto-shift and manual shift mode, and activate dyno mode to deliver repeatable chassis dyno results. The included hand-held monitor connects to them and can be left in place as a dashboard to monitor the transmission in real time, or can be disconnected when the configuration is complete. Once installed, these modules need only a few basic parameters to complete the initial setup. First, select the type of transmission you are using--all supported transmission types are listed in the menu. Other required fields include the number of engine cylinders, rear-end gear ratio, and tire height. Once this has been completed, you can now start and drive the vehicle, while taking advantage of the advanced setup menu items to dial-in the transmission to your liking. You can feel the results in real-time as a passenger manipulates the parameters and monitors the real-time data. Data available for viewing includes engine speed, vehicle speed, throttle position, transmission fluid temperature, shifter position, and commanded gear. Best of all, the MSD Atomic transmission control modules are available as completely stand-alone units or Brainwave-compatible for the Atomic EFI systems. A transmission controller harness is sold separately.
( 18 )
$323.95
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$829.95
ATP automatic transmission control solenoids are designed to replace faulty factory units and keep your transmission shifting smoothly. They're available in a variety of configurations for dozens of transmission types—on thousands of vehicle applications. These replacement solenoids meet or exceed OEM specifications.
( 1 )
$25.99
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$117.99
GearStar GM high performance transmissions are built to the horsepower, torque, and rear gear ratio specs of the engine that it will be matched to. Unlike other high performance transmissions builders, GearStar individual transmissions are hand-built by one technician from start to finish. Before a transmission and torque converter leaves their facility, they are dyno tested for the equivalent of 100 miles, ensuring proper working condition. GearStar GM 4L80E Level 3 transmissions with torque converter are built with the highest quality parts available. "Heart-pounding performance with industry leading experience"; select the proper transmission for your build and "strap yourself in to experience uncompromising performance" with the "legendary road-proven craftsmanship" of GearStar Performance transmissions. Features and specs: * 600 hp * Up to 600 lb.-ft. of torque * Stall: 2,600 to 3,600 * Custom-built 10 in. billet racing lock-up converter * Master overhaul kit with Alto hardened steels * Raybestos Stage 1 frictions * TransGo reprogramming kit * Filter * Torrington bearing kit * Bushing kit * Thrust washer kit * Internal wiring harness * New manifold pressure switch * New EPC solenoid * New PWM solenoid * New input and output speed sensors * New 1-2 and 3-4 shift solenoids * Expanded capacity forward clutch drum * Extra-capacity 2nd gear clutch assembly * Expanded capacity 3rd clutch drum * Heat-treated input and main shafts * Heat-treated forward steel clutch hub * Updated molded steel direct clutch piston * Updated reverse band * New low roller assembly * Wide kickdown band with new apply piston * Heavy-duty intermediate sprag * Updated boost valve * Updated TCC regulator valve * Blue printed pump and valve body * Transmission mount * New OEM steel pan
Not Yet Reviewed
$5,902.99
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$7,344.99
GearStar GM high performance transmissions are built to the horsepower, torque, and rear gear ratio specs of the engine that it will be matched to. Unlike other high performance transmissions builders, GearStar individual transmissions are hand-built by one technician from start to finish. Before a transmission and torque converter leaves their facility, they are dyno tested for the equivalent of 100 miles, ensuring proper working condition. GearStar GM 4L80E Level 4 transmissions with torque converter are built with the highest quality parts available. "Heart-pounding performance with industry leading experience"; select the proper transmission for your build and "strap yourself in to experience uncompromising performance" with the "legendary road-proven craftsmanship" of GearStar Performance transmissions. Features and specs: * 800 hp * Up to 700 lb.-ft. of torque * Stall: 2,800 to 3,400 * Custom-built, custom-stalled 10 in. billet racing lock-up converter * Master overhaul kit with Alto hardened steels * Raybestos Stage 1 frictions * TransGo reprogramming kit * Filter * Torrington bearing kit * Bushing kit * Thrust washer kit * Internal wiring harness * New manifold pressure switch * New EPC solenoid * New PWM solenoid * New input and output speed sensors * New 1-2 and 3-4 shift solenoids * Expanded capacity forward clutch drum * Extra-capacity 2nd gear clutch assembly * Expanded capacity 3rd clutch drum * Heat-treated input shaft * 300M main shaft * 300M forward clutch hub * Updated molded steel direct clutch piston * Updated reverse band * New low roller assembly * Wide kickdown band with new apply piston * Heavy-duty intermediate sprag * Updated boost valve * Updated TCC regulator valve * Blueprinted pump and valve body * Transmission mount * New OEM steel pan
Not Yet Reviewed
$6,715.99
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$7,438.99
Sonnax shift improver performance packs combine innovative heavy-duty performance calibration for firmer shifts under load without sacrificing low-speed drivability. The precision components in these kits upgrade your transmission for maximum achievement and durability by recalibrating pressures, recalibrating shift accumulation, and including improved parts for areas that commonly wear. They are suitable for any heavy-duty application and are a critical foundation for other upgrades when modifying the transmission for high performance use. Sonnax shift improver performance packs additional facts and features: * Shorter shifts, which get progressively firmer with load * Faster pressure increase and higher overall pressure for greater clutch/band holding power * Three ultra-reliable, patented, billet pinless accumulator pistons * Unique 1-2 accumulator spring combination for shifts with character * Improved high rpm pressure * Third accumulator valve gets the 2-3 right the first time, every time * Consistent results, no guessing on calibration * Prevents worn accumulators and separator plate * Optional TCC on-off conversion prevents excess TCC pressure
( 6 )
$164.12
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$351.92
TCI 6x 6-speed GM 4L80E automatic transmission packages are the first aftermarket 6-speed automatic transmissions capable of handling 850 hp. They give you six forward gears (2.97, 2.31, 1.57, 1.18, 1.00, and 0.75) for quicker acceleration and increased fuel economy at cruising speeds. The TCI 6x 6-speed GM 4L80E automatic transmission packages are versatile transmissions that fit Chevy small block, big block, and LS Series engines. They also feature a compact design, allowing them to work in a variety of vehicle applications, including pro touring, street, and race vehicles. The TCI 6x 6-speed GM 4L80E automatic transmission packages include a paddle shifter, wiring harness, dipstick, and transmission cooler. Choose the TCI transmission package that's recommended for your vehicle and engine application.
Not Yet Reviewed
$8,603.95
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$10,343.95
Nothing could be easier than FAST EZ-TCU automatic transmission controllers to electronically govern your overdrive, particularly GM models between 1993-2009. No tuning experience, laptop, or software is required--just a simple installation and setup; these units are configured and ready to roll immediately. Of course, the systems are also fully programmable for those who prefer custom calibrations based on speed, load, and rpm. The EZ-TCUs are capable of multiple setups, which can be switched in real-time … meaning you can run one calibration on your drive to the track, and then change to a more aggressive racing mode with the push of a button! The multi-shift inputs include a full manual mode for bump or paddle shifters. Anyone from a novice to an experienced driver can operate the controllers, as self-diagnostics are built-in. Shift points, shift firmness, shift speed--you now dictate them with the FAST EZ-TCU automatic transmission controller kits, which include the main unit, hand-held module, and wiring harness.
( 5 )
$765.95
Summit Bucks
Transmission Specialties' 4L80E 300M extended spline input shafts have all the latest and greatest updates that make them the strongest on the market. Feed hole changes have been made to make the shaft stronger. The splines that go into the OD planet have been lengthened and the undercut shoulder which has a very small inside diameter, has been removed. TSI also used a hobb to cut this spline—as compared to others who single point cut, which makes for a weaker spline and is considered to be the number one spot of failure for other aftermarket billet shafts. Crafted from premium-grade 300M material, the 4L80E input shafts are engineered to be more durable than traditional shafts, ensuring reliable and consistent performance, even under extreme loads. The extended design offers increased spline engagement into the OD planet, reducing the chance of shaft failure and improving overall strength. Whether you're racing, towing, or just looking to improve your vehicle's performance, make an upgrade to your transmission with high-quality TSI components.
( 2 )
$350.39
ATI PCS (Powertrain Control Solutions) offers automatic transmission controller replacement harnesses for model 705500, GM transmission 4L80-E or 4L85-E. The factory harness will work with carburetor or EFI applications.
Not Yet Reviewed
$239.99
Sonnax Sure Cure automatic transmission rebuild kits are a comprehensive reconditioning package—featuring the best Sonnax products developed to help mechanics restore and enhance transmission performance. Sure Cure components are the same Sonnax parts sold individually to resolve common valve body complaints, as well as other transmission problems. The high-quality components in each Sure Cure kit will repair worn areas and protect the transmission against future damage. Plus, each kit comes with an easy-to-read, step-by-step installation guide that covers inspection and repair of the most critical areas of the valve body. Additional features and benefits: * Restore shift quality and reduce comebacks * Repairs biggest trouble areas to reduce comebacks * Includes step-by-step instructions for comprehensive valve/pump body restoration Kits Include: * Shims (2) endplay * Pump slide pivot pin * Throttle valve plunger valve kit * Shortened TV link * TV cable corrector kit * Seals D-ring servo * 1-2 or 3-4 accumulator spring * Servo release check valve kit * Reverse boost valve kit * Oversized pressure regulator valve * Pinless 1-2 or 3-4 accumulator piston kit * TV boost valve kit * Bushing pump * Bushing rear stator support * Checkballs
( 6 )
$100.99
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$174.99
Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together, providing progressive pressure increases as driving conditions become more demanding. Their springs are approximately 10 percent stronger than OEM and more conservative in impact than other aftermarket kit springs. Large ratio boost valves provide higher pressure incrementally and when it's needed the most. The combination of these springs and valves in the Sonnax hydraulic line pressure booster kits gives you the best of both worlds--a modest pressure increase at the low-end, with a high-end pressure that's equal to or greater than that of other aftermarket kit springs.
( 19 )
$29.83
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$32.19
TCI automatic transmission controller components are designed to keep your TCI EZ-TCU transmission controller in perfect working order. The controller allows for maximum electronic control over shift points, shift firmness, and shift speed and is fully configured and ready to run right out of the box with no tuning necessary. The unit is also optionally fully programmable based on load, speed and RPM. If you ever have the want or need to get any additional components or replacement components for your transmission controller TCI has the automatic transmission controller components you need.
( 10 )
$26.95
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$422.95
Dorman transmission control modules have been thoroughly tested to offer the same function and performance as the stock component, electronically controlling the vehicle's automatic shifting for far less than replacements at the dealer.
( 2 )
$104.95
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