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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.
( 504 )
$50.14
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$167.14
B&M Shift Improver kits are the easiest way to get the stout performance you've always wanted out of your automatic transmission. All you need are some hand tools and an afternoon, and you can turn your transmission into a B&M-tuned unit. Each kit has two stages to fit your needs: RV/Towing and Street/Strip.
( 108 )
$69.25
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$85.05
Summit Bucks
Sonnax Zip kits are engineered to cure common problems associated with today's automatic transmissions. Sonnax Zip kits eliminate: * Burnt clutches * Line pressure instability * Loss of fuel economy * No line rise * Pressure loss * Shift concerns * TCC apply and release concerns * TCC codes * Pressure switch codes
( 11 )
$99.59
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.
( 8 )
$53.04
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$109.43
Upgrade your automatic transmission with ATP shift improver kits. Sluggish shifts are replaced with faster shifts and the strong performance that you expect from your vehicle. ATP shift kits improve performance and extend the life of your transmission. Make your healthy transmission healthier with the addition of ATP automatic transmission shift improver kits.
Not Yet Reviewed
$68.99
B&M's ShiftPlus electronic shift improvers use vacuums or electronics to improve the characteristics of your transmission, and let you change settings as you drive. Great for performance, towing, and RV use, these shift improvers recalibrate your transmission in one of two ways: Vacuum-style transmissions, such as a GM 4T60E, simply recalibrate the hydraulic system through the modulator circuit to provide firmer, more positive shifts; electronically controlled transmissions, such as a Ford AODE, recalibrate the transmission's hydraulic system electronically to give you a firmer, quicker shift, for better performance and longer transmission life. A flip of the switch allows the transmission to operate in the original factory mode at level 1 (firmer than factory) or level 2 (much firmer than factory). Either type installs in minutes with a few simple hand tools, without removing the pan.
( 11 )
$103.95
TCI valve body performance improver kits are designed to change the shift action to a more positive shift. Reduced shift time can add life to the clutches and bands and remove the lag time between shifts. These kits are easy to install and come with the necessary parts and gaskets to install the valve body.
( 4 )
$54.95
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$89.95
These TransGo automatic transmission shift valves will provide maximum throttle between the 3-4 gear shift. During highway speeds, the TransGo automatic transmission shift valves will keep the transmission in 4th gear, so there are no downshifts while at cruising speeds.
( 5 )
$63.00
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$88.71
TCI Trans-Scat valve body kits offer you two options: you can either have good, solid shifting that's well suited to towing, or you can have competition-style shifting. These kits eliminate slippage and lag, improve fuel economy, extend clutch life, and really improve the 2nd and 3rd gear shifts. In addition to delivering crisper shifting, they allow you to downshift on demand, and most will allow you to hold first gear for extended periods, such as when climbing long hills while towing. All kits give you the full range of normal automatic functions when in "drive."
( 20 )
$106.95
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$115.95
TCI TH700-R4 kickdown kits prevent a forced part throttle kickdown from fourth to third gear, to allow cruising at high speeds in overdrive. With the kits installed, the transmission will only kick down from fourth to third at 3/4 throttle.
( 1 )
$95.95
On Sale
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.
( 72 )
$94.99
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$111.99
$85.49
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$100.79
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
On Sale
Hurst Quarter Stick shifter cover kits give you that finished professional look. Available in a distinctive black plastic or aluminum cover, Hurst kits include attaching hardware.
( 33 )
$136.95
$89.95
Some of the most common problems with Suzuki Samurais include the transfer case stuck in neutral and a sloppy transmission shifter. Low Range offers their Sloppy Shifter Fix kits, providing some of the world's best transfer case and transmission bushings ever made for the Samurai. They're designed with Nylatron GS—a bearing-grade nylon used for years in the off-road market and more resilient than polyurethane. Additionally, Low Range Sloppy Shifter Fix kits are easy to install without transmission or transfer case removal and can be done in minutes! Order the kit recommended for your application.
( 7 )
$50.09
TCI shifter mounting plate kits secure your Outlaw and Thunder Stick shifters. These aluminum mounting brackets include quick-release pins so that you can remove and replace your shifter quickly.
( 1 )
$88.95
On Sale
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 )
$178.95
$98.95
Summit Racing™ Corvette-style servo piston kits allow you to swap out your OEM servo on your 700R4 or 4L60E/4L65E automatic transmission and improve shift quality and firmness. They have a larger piston area which increases band-apply pressure and holding power. These kits are drop-in upgrades and will really firm up the 1-2 shift. Includes both pistons and all necessary O-rings.
( 17 )
$77.99
J.W. Performance short overhaul kits offer reliability. The best time to rebuild is before there's a problem. Their short rebuild kits provide premium gaskets and seals to keep your transmission shifting smoothly. Are you ready for a rebuild? J.W. Performance short overhaul kits ensure performance and a long service life.
( 1 )
$98.55
Summit Bucks
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
Get all of those critically important components with Crown Automotive manual transmission small parts kits. These are comprehensive kits to help you correct those shifting issues. Choose Crown for your service components, a trusted name in direct-fit replacement parts.
( 2 )
$96.99
Summit Bucks
Sonnax Super-Hold servo kits offer increased apply area over the OEM servo for more holding force between shifts. They are manufactured from anodized aluminum and include mounting seals and hardware for your specific transmission model. Their improved seal design will conserve pump volume.
( 25 )
$91.85
Summit Racing™ Governor recalibration kits allow you to raise or lower, relative to vehicle speed, the points where your transmission shifts. This is accomplished by a system of combining a variety of weights and springs in your governor, modifying the vehicle speed signal your transmission's shift valves receive. These kits can greatly improve the peak performance and enhance the drivability of the vehicle. They are very useful for transmission swaps, or if you have a car that is very light or has a low rear gear ratio. These kits also work great for bracket cars retaining an automatic 1-2 shift.
( 3 )
$89.99
Summit Bucks
These Sonnax 2nd Gear Corvette ratio servo kits provide increased apply area resulting in improved holding power for firmer 1-2 and 3-4 shifts in 4L60 (700-R4) and 4L60-E transmissions. The servo piston features D-rings in place of the OE seal rings for improved sealing during apply and release. They are compatible with Sonnax 4th Gear Super Hold dual servo kits. Sonnax 2nd Gear Corvette ratio servo kits include: * Piston * 2 Piston D-Rings * Housing * Housing O-Ring
( 2 )
$57.53
Summit Bucks
If you're looking for an easy upgrade to your automatic transmission, Sonnax Servo piston kits may be the answer. The improvement in shift quality is an immediate and noticeable value. These direct replacement kits will help to eliminate a bit of a "sloppy" gear performance caused by faulty OEM servo units. With all necessary rings and seals to prevent leakage and handle higher pressure, Sonnax servo pistons can be your link to greater band apply force. Choose the kit that matches your vehicle specs, then expect faster and firmer shifts!
( 30 )
$67.62
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$78.01
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