Transmission & Drivetrain
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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.
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TransGo's Performance shift kits give you the hard-launching, tire-blazing shifts you want, after just a few hours' work with basic hand tools. TransGo even has kits for computer-controlled, 4-speed automatics. Their performance shift kits can be installed with the transmission in the vehicle and they come with complete instructions. Some kits even include a step-by-step video to walk you through the installation process.
( 499 )
$50.14
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$321.43
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 )
$166.99
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$356.54
Shiftworks SW280 and SW230 Series automatic transmission floor mount shifters are adaptable to many different applications. They come with the mounting hardware, rod linkage, neutral safety/backup light switch, cables (where applicable) and the handle (in your choice of a T-handle style or round smoothie shift knob). For cable-operated setups, cable is also sold separately in various lengths to suit your vehicle needs.
( 21 )
$472.99
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$593.99
Lokar electronic sport shifters allow you to take control of your automatic transmission whenever you desire. Just shift your lever from drive into sport mode and begin bumping through the gears. Lokar has maintained all of the safety features from their traditional units, and these sport-mode shifters are available for several applications in different shifter lever lengths and knob styles. Retain classic looks, while adding new technology with Lokar electronic sport shifters. Features include: * Positive lock-out in Park and Neutral * Neutral safety switch * Floor mount design, cable operated * Standard automatic with integrated "Sport Shift" mode * Works will all current Lokar knobs and adapters * Several lever lengths in straight or bend-styles available * Works with most aftermarket controllers * Cable-integrated bracket
( 24 )
$795.95
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$805.95
Lokar's floor mount automatic transmission shifters follow in the footsteps of their parent transmission mount and tailmount shifters, having been designed with the same superior craftsmanship. The exclusive floor mount brackets allow for installation above or below the floor on the transmission tunnel. These kits include a quad arm with quad arm offsets for mounting to the right or left. Removal of the transmission is not necessary. The floor mount shifters are equipped with all of the expected safety features of a Lokar shifter. Many options are available, including transmission application.
( 44 )
$415.95
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$522.95
When you order a Lokar shifter, you know you're buying quality. These Lokar case-mount automatic transmission shifters are built to deliver outstanding performance and safety with their patented Safety Lock-Out button. The button prevents accidental shifting from park into reverse, drive, and low gears. Other important features include: * Neutral safety switch * Completely adjustable mounting bracket that allows for a wide range of installation positions * Available in a variety of styles and finishes
( 59 )
$465.95
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$531.95
Lokar Clayton Machine Works gated automatic transmission shifters are available in a floor mount configuration for most GM, Ford, and Chrysler transmissions. Available in several lever lengths, each part is designed with attention to details, implementing modern design elements and finishes to provide function and style that blends with any vehicle. Features include: * Available in floor mount only, can be converted to cable operation with optional conversion kit * Gated style, side shift detent pattern allows for unlimited knob options * Innovative lever design allows for easy removal and 360-degree rotation * Options available for mounting Tremec style levers * Durable coated bracketry * Neutral safety switch
( 8 )
$235.95
Clayton Machine Works gated automatic transmission shifters have all the elements of great style. What is a gated shifter? Well, instead of just relying on the internal shift detents in the transmission to stop in gear and hold it there, a gated shifter has a series of paths, stops or "gates" to control the free shifting from one gear to another. These gated-style automatic transmission shifters are available in floor mount only option, however, they can be converted to cable operation with optional conversion kit (sold separately). The gated-style, side shift detent pattern allows for unlimited knob options, and the innovative lever design allows for easy removal and 360 degree rotation. Yep, it's all about the details! Key features: * Available for most GM, Ford, and Chrysler transmissions * Durable coated bracketry * Available in floor mount only, can be converted to cable operation with optional conversion kit (not included) * Lever lengths of 6 in., 8 in., 10 in., 12 in., 16 in., 23 in., and 32 in. are available, as well as 16 in., 23 in., and 32 in. double bend * Innovative lever design allows for easy removal and 360 degree rotation * Options available for mounting Tremec style levers * Gated-style, side shift detent pattern allows for unlimited knob options * Neutral safety switch included
( 1 )
$235.95
FTI Performance 4L80E Level 3 transmissions are built with unbeatable performance and durability. They are 1,000 hp rated, offered in early (1991-97) and late (1997-up) styles, and available as transmission only or in a kit. The kits include transmission, an FTI SRLS4 Series billet torque converter in your selected stall speed, locking filler tube and dipstick, and a case of High Performance ATF. Choose the 4L80E Level 3 transmission or transmission/converter combo in the style needed for your build.
Not Yet Reviewed
$4,445.99
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$5,995.99
The durable, jam-proof design of Winters Sidewinder standard automatic shifters enables you to slam gears--while the fail-safe gate layout makes it impossible to accidentally shift into reverse. The units are available in standard forward or reverse shift patterns and include linkage hardware and 5 ft. shifter cable. Winters shifters are ready to install on various GM, Ford, and Chrysler models equipped with automatic transmissions.
( 165 )
$277.99
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$308.99
On Sale
Patterned after Hurst's award-winning Quarter Stick shifter, their Pistol-Grip shifters offer a firm, natural grip so you can bang through the gears quickly and comfortably. They feature controlled detent activation, one-hand operated spring-loaded reverse lockout, and a neutral safety switch. CNC-machined from billet aluminum, the Hurst Pistol-Grip handles come with a snap-action switch for roll control, nitrous, or trans-brake activation.
( 52 )
$599.95
$538.95
Shiftworks Horseshoe Shifters provide a high-quality solution for replacing worn-out original or imprecise aftermarket shifters. Designed to enhance your driving experience, these shifters offer improved control and a variety of shift styles, including regular, slapshift, and reverse pattern. Renowned for its commitment to excellence, Shiftworks ensures reliable performance for your automatic transmission, giving you the confidence to shift smoothly and effectively wherever your journey takes you. Trust Shiftworks to meet all your shifter needs with superior craftsmanship and reliability.
( 10 )
$503.99
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$562.99
FTI Performance 4L80E Level 2 transmissions are built with unbeatable performance and durability. They are 700 hp rated, offered in early (1991-97) and late (1997-up) styles, and available as transmission only or in a kit. The kits include transmission, an FTI SRLS4 Series billet torque converter in your selected stall speed, locking filler tube and dipstick, and a case of High Performance ATF. Choose the 4L80E Level 2 transmission or transmission/converter combo in the style needed for your build.
Not Yet Reviewed
$4,349.99
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$5,649.99
Manufacturer Rebate
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
$6,845.00
TransGo automatic transmission rebuild components are engineered for performance and designed for durability. These kits address nearly every gearbox problem possible through quality that only a legend in the transmission repair industry can provide. Shift that clunky machine into reliability mode with TransGo automatic transmission rebuild components. Order the kit designed to fit your specific model.
( 11 )
$20.57
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$128.57
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 )
$100.75
Manufacturer Rebate
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
$7,845.00
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.
( 20 )
$32.06
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
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
$6,949.50
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$9,456.95
Reid Racing 4L80E tailhousings are stronger and more rigid than a stock GM tailhousing due to the use of aircraft grade aluminum alloy, thicker walls, and additional gusseting. Precision machining and perfectly aligned bores minimize power loss while maximizing reliability, and Reid's reworked oil passage improves lubrication for the yoke and rear bearing. Reid Racing 4L80E tailhousings fit all stock 4L80E transmission cases, as well as Reid Racing's Super 80 transmission case. They are available with billet bronze bushing or roller bearing.
Not Yet Reviewed
$359.00
Lokar floor mount cable conversion kits facilitate changing your automatic transmission shifting style from rod linkage to cable operation. These components allow the cable to be routed around obstacles and mounted in virtually any location. When paired with Lokar's durable push/pull 1/4 in. cable and spherical rod ends, your shifter will rise to the next level of performance. Make your conversion an easy process with shift assembly parts from Lokar.
( 5 )
$118.95
Shiftworks shifter conversion kits offer shifter solutions for a variety of make/model vehicles. If you've tried to use your factory-installed console or automatic floor shifter when swapping out your old transmission, you soon realize that it doesn't fit. But, with Shiftworks kits, they will. These assemblies have what you need to keep your classic ride looking original and shifting with modern performance. Whether you're replacing your Powerglide or upgrading to an overdrive transmission, your favorite factory shifter will still be there—and working great—thanks to Shiftworks shifter conversion kits.
( 70 )
$111.99
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$279.99
TransGo automatic transmission shift kits include the needed items to restore proper function to your valve body with much improved drivability and durability. A wonderful addition to your OEM classic vehicle. Features and benefits: * Raises overall line pressure * Calibration for a higher speed manual low * Crisp shift performance and more durability
( 5 )
$230.14
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