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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.
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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On Sale
Holley Sniper Automatic Transmission Controllers
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
( 2 )
$614.95
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$749.95
$552.95
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$673.95
On Sale
MSD Atomic Transmission Control Modules
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.
( 19 )
$921.95
$357.95
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$828.95
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
( 3 )
$1,026.95
Chevrolet Performance Automatic Transmission Controllers
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 )
$1,841.74
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$1,859.50
DIYAutoTune MicroSquirt CAN Transmission Controllers
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.
( 5 )
$499.99
Haltech Nexus Ti4L Transmission Interface Kits
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
Classic Instruments Gear Selector Sending Unit Kits
Know what gear you are in with Classic Instruments gear selector sending unit kits. These kits include a transmission-mounted sensor and interface module that works with Classic Instruments' gear selector gauges or individual LED indicator lights. Features: * Kit includes mounting hardware * Works with most 3- and 4-speed automatic transmissions * Easy push-button calibration * Also works as backup light trigger or neutral safety switch
( 4 )
$182.95
Lokar Indicator Control Modules
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.
( 8 )
$277.95
GearStar Quick4 Transmission Controllers
GearStar offers Quick4 Gen 2 standalone automatic transmission controllers for a variety of applications. They are required for any electronically controlled transmission. Each package contains the computer, wiring harness, and custom wire loom; comes preloaded with a tune designed for specific transmissions; and will include a throttle position sensor kit. --- Models are currently available to support these popular transmissions: * GM 4L60E, 4L65E, 4L70E (2008 and earlier) 13 pin main harness connector * GM 4L80E and 4L85E * Ford AOD-E, 4R70W 1998-2003 wiring harness with the 12 pin MLPS switch * Ford E4OD and 4R100 late solenoid connector, with 11 or 12 pin MLPS switch The Quick4 is a powerful, fully featured, easy-to-use transmission control system. It enables the use of modern, electronic 4-speed transmissions on a wide variety of vehicles that lack OEM capabilities, such as classic cars, trucks, or motor homes. It can also be used to enhance a modern vehicle's performance by taking over control from the OEM computer, allowing the user to directly adjust the shift points, firmness, torque converter engagement, and much more. The Quick4 does not require the use of a laptop for tuning. Tuning can be done through the user interface with a soft touch dial and LCD screen. There is free downloadable tuning software to fine-tune your transmission with a Windows-based PC.
Not Yet Reviewed
$850.00
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$879.99
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.
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$135.45
FiTech Go Shift Transmission Controllers
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.
( 11 )
$599.00
TCI TCU 2.0 Automatic Transmission Controllers
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
$1,130.95
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.
( 10 )
$308.97
Dorman Transmission Control Modules
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.
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$132.95
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$686.95
Dorman Transmission Electro-Hydraulic Control Modules
Dorman transmission electro-hydraulic control modules (TEHCM) combine the TCM, valve body solenoids, and pressure and temperature switches into one unit. They restore the ability to shift the vehicle in and out of gear without hesitation or rough shift. They're fully remanufactured and vehicle simulator-tested for durability and quality assurance. Vehicle VIN is required at time of order. Requires programming after installation.
( 11 )
$271.95
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$745.99
B&M Powerswitches for Clutch Converters
B&M Powerswitch kits only lock out the converter in first through third gears. The TH-700R4 and the TH-2004R will not function properly with the lockup converter locked out in fourth gear. These Powerswitch kits automatically override the switch in fourth gear in overdrive transmissions.
( 5 )
$112.95
Sonnax 1-2 and 2-3 Accumulator Control Valve Kits
Ford E4OD and 4R100 transmissions often display shifting irregularities which can be traced to problems with accumulator control valves. Wear ridges form as the valve moves in and out of the bore. Under high-pressure shifts, the valve is allowed to stroke too far, causing it to hang up on these ridges and block oil flow to the associated clutch. This results in soft shifts, loss of gear, and burnt clutches. Sonnax 1-2 and 2-3 accumulator control valve kits resolve these issues and provide a firmer-than-OE shift quality. (The kit fits either of those two locations.) Additional details: * The step machined into valve spool acts as an orifice to allow full oil flow to clutches when appropriate, preventing premature clutch failure * Reinforcement retaining clip attaches to OE clip to prevent over-stroking * Spring shims allow for selective increase of apply pressure to manipulate shift quality * Annular groove helps center valve in bore to prevent future side-load wear * Drop-in Zip Valve parts install quickly and easily
Not Yet Reviewed
$12.99
Fleece Performance TapShifters
Fleece Performance TapShifters allow you to shift your transmission with the touch of a button. Perfect for towing, drag racing, daily driving, and everything in-between, these kits install in no time and provide factory-like operation, functionality, and styling. Fleece Performance TapShifters are available for a multitude of year/make/model vehicles, and install using OEM high-quality connectors for a complete plug-and-play installation.
( 2 )
$399.00
On Sale
BD Diesel Pressure Controllers
BD Diesel pressure controllers are designed to prevent midrange torque converter shudder and clutch/band slippage. The controllers feature three different levels that increase mainline pressure by mimicking higher throttle positions. Transmission function is improved and lugging is alleviated with the added feature of a slight hold or delay in shifting. This eliminates all shuttle shifting with light throttle—and reduces shift flare and gear hunting. BD Diesel pressure controllers have higher pressure, more elaborate control, and an easy factory plug-in installation. Order the model designed for your vehicle, engine, and transmission application.
Not Yet Reviewed
$329.95
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$360.95
$296.96
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$324.86
Eddie Marine Shifter Cable Brackets
Eddie Marine's shifter cable brackets are designed to mount to one of their billet shifters, as well as a Teleflex or Morse shifter, so a cable can be easily mounted. The shifter cable brackets should be used with an Eddie Marine cable connection kit for proper secure mounting.
( 1 )
$35.95
ATS Diesel Performance Co-Pilot Automatic Transmission Controller Kits
Gain control over your transmission with an ATS Diesel Performance Co-Pilot automatic transmission controller kit. Street Co-Pilots are for people who want a transmission they can race on the weekends, but still drive on the street—without having to deal with overly-harsh shifts. With Street controllers, you get exactly that freedom. During everyday driving, the lower settings give you smooth shifts; while at the track, the higher settings give you full throttle shifting that is quick and crisp. All Co-Pilot transmission controllers give you control over your torque converter so you can bring it on faster or later depending on your driving style and preferences. Order the model recommended for your transmission application. Product features: * In-cab controls—you don't even need to pop the hood * Ability to raise line pressure on certain models * More effective than any "shift kit"—pressure increases more than double what shift kits do without harsh or erratic shifting * More efficient power transfer by controlling torque converter lockup; results in lower transmission temperatures * Adjustable on-the-fly * Street variants feature user-selectable race mode that forces lockup after the 1-2 shift while maintaining full line pressure * Automatically controls an exhaust brake on some models
Not Yet Reviewed
$614.99
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$819.99
Eddie Marine Control Cable Accessories
Eddie Marine control cable accessories include clamps, shims, pivots, connection kits and more. Everything you need to position, hold, and secure your boat throttle and shifter cables is available at Eddie Marine.
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$26.95
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$77.95
TransGo Automatic Transmission Solenoid Kits
TransGo Performance offers solenoid repair kits for nearly a dozen automatic transmission applications, including models from Mopar and GM. Transmissions often come with contaminated governor pressure solenoids. This results in complaints of wrong gear starts, as well as governor solenoid and sensor performance codes. The computer uses the governor pressure solenoid to generate governor pressure relative to road speed, emulating what the hydraulic governor did in older 'RH' series transmissions. The computer varies the duty cycle to the PWM governor pressure solenoid to achieve the desired output pressure. Simultaneously, it monitors the feedback from the governor pressure sensor to confirm that the governor pressure is doing what it is commanded to do. When the solenoid sticks or is restricted, the computer notices that the pressure reading from the sensor does not match the desired governor pressure and sets a code which puts the unit in limp-in mode, resulting in 3rd gear start and no shift. These TransGo governor pressure solenoid repair kits contain everything you need to take apart the original equipment solenoids, restore the valve bore, then replace the spool valve, spring and cap with new ones. The repair kits include enough parts to rebuild multiple solenoids. The repair kits are available with or without tools. Order the model recommended for your transmission. * Corrects/Prevents/Reduces: -- Wrong gear start -- No upshift -- Governor pressure solenoid and sensor performance codes -- Limp-in mode
Not Yet Reviewed
$52.37
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$77.14
Chevrolet Performance Automatic Transmission Shift Solenoid Valves
Chevrolet Performance automatic transmission shift solenoid valves are GM-recommended replacement components. Keeping your transmission shifting and operating efficiently is crucial to the overall life of vehicle. These original equipment solenoids will provide the same performance, durability, and service life you can expect from a General Motors direct part.
Not Yet Reviewed
$18.99
