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TransGo Performance Shift Kits

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.

4.69 out of 5 stars ( 513 )

$51.43

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$295.71

Sonnax Shift Improver Performance Packs

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

5.0 out of 5 stars ( 6 )

$176.59

TransGo Automatic Transmission Boost Valves

If your transmission isn't performing properly, then you may need one of these TransGo automatic transmission boost valves. They are available in different diameters that provide increased line pressure so that your transmission will work correctly when used under conditions other than what the factory intended. Get the correct pressure with TransGo automatic transmission boost valves and you'll increase your transmission's reliability.

4.72 out of 5 stars ( 29 )

$26.50

Sonnax Hydraulic Line Pressure Booster Kits

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.

4.95 out of 5 stars ( 20 )

$32.26

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$34.82

TransGo Automatic Transmission Shift Kits

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

4.8 out of 5 stars ( 5 )

$238.00

TransGo Automatic Transmission Valve Body Repair Kits

TransGo valve body repair kits give you the components needed to restore proper shifts and correct other problems with your automatic transmission. They will help correct cold rough shifts, downshift problems, long shifts, hard or soft shifts and lockup problems. Repair your automatic transmission with TransGo valve body repair kits.

4.56 out of 5 stars ( 9 )

$27.27

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$50.01

Sonnax Sure Cure® Automatic Transmission Rebuild Kits

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

4.67 out of 5 stars ( 6 )

$181.99

TransGo Automatic Transmission Pressure Regulator Valves

TransGo Performance offers a variety of automatic transmission rebuild components—including pressure regulator valves for hundreds of applications, such as cars, trucks, and vans from Pontiac, BMW, Chevrolet, GMC, Hummer, Cadillac, Saturn, Oldsmobile, Daewoo, Saab, Isuzu, Buick, Avanti from the 1990s and up. These drop-in replacement valves correct, prevent, and reduce pressure rise shift quality issues. The pressure regulator valves are available individually or in kits with different rebuild parts (see details in Notes). Order the model recommended for your transmission and/or vehicle.

5.0 out of 5 stars ( 1 )

$20.71

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$25.71

Summit Racing™ 4L60E Sun Shells

Summit Racing™ 4L60E sun shells or sun gear reaction shells are built to offer the strength and durability you need to keep your transmission operating reliably. These sun shells are made of heavy gauge steel and feature heat-treated spine collars to significantly reduce the chance of premature failure and provide the service life you expect. Recommended for stock and performance rebuilds due the the high failure rate of the factory version. Works with both plastic washer and bearings.

5.0 out of 5 stars ( 2 )

$99.99

TransGo Reducing Regulator Reamer And Guide Tools

Reducing valve bore within a transmission valve body can wear out over time, causing hard shifting, fault codes, and solenoid failures. TransGo reducing regulator reamer and guide tools provide an inexpensive solution for repairing regulator valve bores to eliminate further issues. These reamer tools are made from high-quality steel to ensure durability when drilling and are the same type of tool that can be found within the TransGo shift kits.

Not Yet Reviewed

$145.80

GearStar GM 4L60E Level 3 Transmissions

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 4L60E 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: * 500 hp * Up to 500 lb.-ft. of torque * Raybestos Stage 1 frictions and steels * TransGo heavy-duty reprogramming kit with Shift Command * Filter * 29-element dual cage sprag * High-capacity upgraded pump assembly * New hardened pump rings * New 10-vane pump rotor * New vanes * New stator * .500 boost valve * Pressure regulator valve * Updated boost valve * TransGo reprogramming shift kit with Shift Command * Bushing kit * New thrust washers * Complete Torrington bearing kit * Heavy-duty hardened sun shell * Heavy-duty expanded capacity input drum with reinforcing sleeve * High-rev spring kit * Corvette servo * High-energy wide bands * New valve body spacer plate * Fill tube and stick * New shift solenoids * New EPC solenoid * New PWM solenoid * New 3/2 solenoid * New manifold pressure switch * New internal wiring harness with new TCC solenoid * New electronic speed sensor * Inspection cover (chrome) * Transmission mount * New OE steel transmission pan

Not Yet Reviewed

$4,945.00

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$5,445.00

TransGo Valve Body Bore End Plugs

Engineered for performance, designed for durability, TransGo valve body bore end plugs are made to correct commonly overlooked circuit leaks. The end plugs reduce or prevent issues with fall-out of fourth gear, no fourth gear, and torque converter clutch instability or surging, especially during cylinder deactivation. Each pack includes four O-rings and three valve body bore end plugs. Your transmission will benefit from TransGo valve body bore end plugs kits.

Not Yet Reviewed

$16.59

TransGo Oversized Pressure Regulator Reamer Tools

Engineered for performance, designed for durability, TransGo oversized pressure regulator reamer tools, made specifically for installation of TransGo's oversized pressure regulator valve to the pump stator. Made from high-quality U.S. steel, the reusable reamer has a heat-treated sleeve, is drill motor friendly, and does not require any expensive holding fixture. This solution corrects common problems, that your transmission will benefit from, while saving you money.

Not Yet Reviewed

$141.57

Advance Adapters 4L60E Transmission Reluctor Kits

Advance Adapters 4L60E transmission reluctor kits provide a one-to-one reading on the 4L60E output shaft, even if the transfer case is in a low range. The kits include a vehicle speed sensor, a clamp-on tone ring, installation hardware, and instructions. Advance Adapters provides 4L60E transmission reluctor kits for their output shafts and stock GM versions.

5.0 out of 5 stars ( 3 )

$267.71

GearStar GM 4L60E Level 4 Transmissions

GearStar GM high-performance transmissions are built to meet the horsepower, torque, and rear gear ratio demands of the engines they will be matched to. Unlike other high-performance transmissions these models are hand-built by one technician from start to finish. Before a transmission and torque converter leaves the facility, they are dyno-tested for the equivalent of 100 miles, ensuring proper working conditions. GearStar GM 4L65E Level 4 transmissions and included torque converters are built with the highest-quality parts available to provide heart-pounding performance with industry-leading experience. Choose the Level 4 transmission best suited for your build and strap yourself into the experience of uncompromising performance with the legendary road-proven craftsmanship of GearStar Performance transmissions! More product features, items, and specifications may include: * Versions of up to 650 hp and up to 600 lbs.-ft. of torque at the crankshaft * Raybestos Stage 1 frictions and steels, high-energy wide bands * Two TransGo recalibration shift kits with Shift Command * OE-style filter and new internal wiring harness with new TCC solenoid * New shift solenoids, EPC solenoid, PWM solenoid, and 3/2 control solenoid * New manifold pressure switch, electronic speed sensor, and valve body spacer plate * Corvette servo and Super Hold 4th gear servo * New Torrington bearings * Bushing kit and thrust washer or thrust washer kit * Dual cage sprag (29-element) * High-capacity multi-vane pump assembly with new rotor (some with slide) * Hardened stator shaft, new vanes, and hardened rings * Updated boost valve * Pressure regulator valve * Extra-capacity, heavy-duty drum assembly * Heavy-duty 5-pinion steel planetary gear sets * Transmission pan

Not Yet Reviewed

$5,945.00

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$6,445.00

GearStar GM 4L60E Level 5 Pro Series Transmissions

GearStar GM 4L60E Level 5 Pro Series transmissions come with a custom billet Yank Performance torque converter. This is the first of many upgrades that go into making sure that each transmission is not only built for performance applications to handle up to 700 crank horsepower or 700 crank foot-pounds of torque. These transmissions are designed to bolt to small block or big block Chevrolet style engines. They feature a 13-pin main harness connector that's designed for factory GM applications 1996+ or other standalone transmission controllers. Level 5 Pro Series units come with: Raybestos Stage 1 frictions, hardened sun shell, Sonnax Smart-Tech drum and shaft assembly, billet pump gears, super-hold 2nd servo, super-hold 4th gear servo, heavy-duty 5-pinion front and rear planetary gear set with sungear, hardened output shaft, upgraded hardened reaction shaft and hub, and a Transgo valve body reprogramming shift kit with shift command. These transmissions come with all new electrics, including the wiring harness, all sensors, and solenoids—along with all new bushings, bearings, and seals. Every transmission is assembled by one of GearStar's five expert builders. The transmission packages arrive dyno tested with 100 miles already on the product, which means the break-in procedure has been done and they're ready to go!

Not Yet Reviewed

$7,445.00

Sonnax 4L60E Bellhousing Bolt Torx Plus Bits

Stripped bellhousing bolts? The cause is usually the loose fit of standard Torx bits, which damage the bellhousing bolts during removal or installation of the bolts. The solution to this problem is Sonnax Torx Plus bits. Specially designed for removing 4L60E bellhousing bolts, Sonnax bits have a tighter fit with the drive head of the bolt, helping to avoid rounding out the bolt head or the bit, and prevent the bit from walking out of the bolt head. Also, these Sonnax tools permit higher torque loads to be applied, which are often needed to remove extra-tight bolts.

5.0 out of 5 stars ( 1 )

$19.99

Painless Performance 4L60E/4L80E Vehicle Speed Sensor Repair Pigtails

Painless Performance 4L60E/4L80E vehicle speed sensor repair pigtails enable you to extend your VSS wiring for a 4x4 transfer case setup or repair a damaged pigtail. The Painless VSS pigtail gives you 24 in. of wire, high-quality barrel connectors, and mastic heat-shrink to make a weatherproof connection when extending or repairing your 4L60E or 4L80E VSS wires at the transmission.

Not Yet Reviewed

$14.99

Lokar Cable Operated Automatic Transmission Shifters

When you order a Lokar cable-operated automatic transmission shifter, you know you're buying quality. They're manufactured to deliver outstanding performance and safety with their patented Safety Lock-Out button. This button prevents accidental shifting from park into reverse, drive, and low gears. Other important features include: a neutral safety switch; 360 degree lever rotation for extra leg room; a completely adjustable mounting bracket that allows for a wide range of installation positions; and your choice of a brushed aluminum mushroom, black anodized mushroom, or high-tech tapered shift knob. These Lokar shifters use a short shifter cable, eliminating the problem of time-consuming linkage adjustments. Available for many different types of automatic transmissions, the shifters are perfect for your car, truck, hot rod, or street rod. Options include stick length, type, and finish; and knob style, material, and finish.

4.74 out of 5 stars ( 23 )

$534.95

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$700.95

Lokar Case-Mount Automatic Transmission Shifters

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

4.51 out of 5 stars ( 63 )

$455.95

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$611.95

TCI 4L60E Boost Valve Assemblies

Operating line pressure is the lifeblood of any automatic transmission by providing the clamping force on the clutches and bands. Oftentimes, increasing line pressure is a requirement when increasing driveline output. TCI's new 4L60E boost valve assemblies provide you the means of elevating your line pressure while also addressing wear issues that may actually have your transmission running at a lower level of pressure than GM intended! Features include: * Larger valve diameter over stock which yields 10-15% higher line pressure * O-rings on boost sleeve which prevent loss of boost signal pressure * Sleeve constructed from Alcoa Deltalloy 4032 & valve is hard-coat anodized which prevents wear between the mating parts

Not Yet Reviewed

$65.95

TCI 4L60E/4L65E Bolt-Together Torque Converters

TCI 4L60E/4L65E bolt-together torque converters feature a triple-disc lock-up configuration and a bolt-together design that allows for easy disassembly. Removing the billet front provides access to the entire lock-up assembly, turbine, stator, and bearings for servicing or restalling for future vehicle modifications. To further enhance strength, TCI has included both a precision-ground billet impeller hub and billet front that is CNC-machined to reduce ballooning, while the billet turbine hub, billet lockup piston and billet clutch hub are pre-hardened. These patent-pending converters use a triple-disc lock-up clutch that utilizes woven carbon frictions designed to withstand the punishment of continuous slip lock-up control. The effective diameter of the clutch in conjunction with the triple-disc configuration provides for significantly higher torque capacity over the stock clutch. The lock-up clutch is attached to an industry-exclusive self regulating clutch hub which hydraulically modulates the apply pressure to allow for the smoothest engagement of any 4L60E/4L65E converter on the market. Additional benefits include: * Bolt-in modification with no tuning required * Billet, bolt-together, self-servicable, enabling you to easily change your stall speed right at home * Fully furnace-brazed, computer balanced, and hand assembled to precise tolerances * Premium roller bearings and HDT (Heat Dissipating Technology) coating which enables lower operating temps and more efficient operation

Not Yet Reviewed

$1,282.95

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$1,448.95

Holley Dominator EFI Vehicle Management Systems

Holley Dominator EFI vehicle management systems are intended for all engine applications, from street to high-end racing. They have nearly unlimited capabilities to control any power adder, input, or output that you can throw at them. Features include: * 12 sequentially driven 8:2 peak and hold injector drivers capable of driving up to 24 low or high-impedance injectors * 12-channel distributorless ignition outputs capable of directly driving smart ignition coils or Holley DIS coils * Plug-and-play control of factory GM 24x and 58x LSX engines * Integrated electronic transmission control--currently can control GM 4L60E and 4L80E * Integrated dual channel wideband oxygen sensor controls, work with NTK or Bosch sensors * Integrated drive by wire throttle body control, can control two drive by wire throttle bodies * 4-stage progressive nitrous oxide controller * Turbo boost control * Integrated water/methanol injection control * Integrated data acquisition and control allowed with massive amount of programmable inputs and outputs * Internal data logging standard with a huge 2 GB of memory * Self-tuning fuel table strategy greatly simplifies tuning process * Store and change between four calibrations * Individual cylinder fuel and spark control allows you to unlock your engine's potential

4.17 out of 5 stars ( 6 )

$2,399.95

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$3,499.95

Summit Racing™ Automatic Transmissions

Summit Racing™ Automatic Transmissions combine quality and economy to offer replacement transmissions in many styles and options. These units are remanufactured with all-new clutches, thrust washers, seals, bushings, and high-energy bands, along with other "failure prone" hard parts depending on unit. Other features include a rebuilt front pump, a valve body with shift for street and performance and high-quality seals and gaskets. You get all these impressive upgrades, along with reliable performance and extreme value. All transmissions are Dyno tested before they're shipped. Order the model recommended for your vehicle.

3.51 out of 5 stars ( 65 )

$1,849.99

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$2,579.99

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