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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 )
$356.54
TransGo automatic transmission reprogramming kits are designed with performance in mind. Most, but not all models contain additional features like Gear Command that allows you to hold manual low to any speed, and shift back to low at any speed. They are great for strip cars or 4x4 rock crawlers needing to select low and not have it upshift. Most TransGo automatic transmission reprogramming kits can be tuned for HD (Heavy Duty) use by following the recommendations in the kits.
( 39 )
$250.66
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$295.71
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 )
$250.86
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$321.43
You'll have a heavy-duty, reliable transducer when you install BD Diesel valve body electronics upgrade kits. One of the leading causes of faults with automatic transmissions is failed governor pressure transducers, especially if you run higher line pressures. These kits replace the stock plastic transducer with a sturdy metal unit that can handle greater line pressures without failing; preventing over-pressure codes and wild oscillations, thus extending transmission life.
( 12 )
$282.95
Z Automotive TranZformer electronic shift kits transform your car into a neck-snapping, tire-chirping fun to drive beast that at the press of a button, returns to stock. Best of all, they're completely hidden. Available in Gen 1 or Gen 2 kits, you can have your NAG1 transmission shift how YOU want it to. You get to modify shift firmness to fit your driving style/mood, plus a lot more. They install in minutes, connecting via wiretaps into wires hidden behind the steering column lower cover. Once installed, TranZformer kits will modify transmission parameters for that real "old school" muscle car shift feel. Chirp through gear shifts or just firm them up a little for towing or for track use; use your steering wheel buttons and EVIC screen (or cruise stalk/buttons for those without EVIC) to adjust shift firmness on-the-fly, whenever you want; connect to your PC via USB cable to dial-in independent upshift and downshift boost percentages (0 to 100) for each gear in both Drive and AutoStick mode. You can reduce the time delay when shifting into Reverse and Drive, adjust shift firmness scaling based on throttle position, and reset or kill the TCM's adaptive learning system, keeping the TCM from dialing back the shift firmness over time. Select the kit designed for your vehicle. Some of the features and benefits (may vary by kit): * Z Automotive Programming Utility (for Windows PCs only) allows you to program shift parameters, view status, update the firmware, and more * Steering wheel shifting (SWS) allows you to use your steering wheel's buttons to manually control gear shift while keeping your hands on the wheel * AutoUpshift allows you to set your own shift points when in AutoStick * Line Lock mode holds the vehicle with the front brakes so you can hit the gas and do a perfect burnout Peak rpm display: Will display actual shift rpms after each shift--great when adjusting auto upshift to squeeze every last bit out of that high revving cam, or to check what rpm you hit when shifting manually * 0 to 30 and 0 to 60 timer Reset adaptives: Will reset TCM adaptives any time you wish
Not Yet Reviewed
$289.00
Silver Sport front shift kits allow you to move the shifter from the stock rear location to the front at a more bench seat friendly 13.5 in. behind the clutch housing on specific 6-speed transmissions. They feature SST's short throw, billet shift tower with a compact and efficient design and accepts popular 2-bolt style handles. They include detailed instructions to walk you through the conversion.
( 2 )
$399.95
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$439.95
aFe ShiftLogic modules greatly improve the transmission shift feel in your diesel rig. The modules modify the transmission line pressure, resulting in improved shift firmness and reduced transmission slippage. They also reduce fluid temperature and extend the life of your transmission. aFe ShiftLogic modules have three different settings to personalize your shift feel, and the adjustment can easily be done with a simple push of the module button. aFe ShiftLogic modules feature: * Plug-and-play installation; no cutting or splicing wires * Ideal for performance driving and towing applications * Works with stock or modified transmissions * Adjustable LED settings; no LED—Stock, orange LED—Stage 1, red LED—Stage 2
Not Yet Reviewed
$408.00
Hurst Competition/Plus shifters have been the benchmark of transmission control and race-proven since 1963. When you are ready to install one, be sure to choose the correct kit for the right fit. Hurst Competition/Plus shifter installation kits are custom designed to fit directly into your vehicle, with the least possible modifications, and to give you firm positive shifts every time. They come with everything necessary (shifter not included) to install your Hurst Competition/Plus shifter in your car. Features: * All parts, hardware, and installation instructions * Hardened steel shift linkage rods * Nylon bushings and spring clips * Shifter mount plate
( 211 )
$299.95
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$425.95
BD Diesel short shift kits reduce the throw in your transmission by up to 20 percent. They provide a quick, accurate gear selection without those long, sweeping shift throws.
Not Yet Reviewed
$363.95
For the ultimate in performance, feel, and dependability, mount your Street Super shifter with the appropriate Hurst installation kit. The shifters mount high on the transmission allowing the shift arms to be almost completely straight for added strength and leverage when racing. Hurst Street Super shifter installation kits include the necessary mounting plate, shift arms, hardened steel shift linkage rods, rod adjusting buttons, nylon bushings, spring clips, necessary hardware, and instructions.
( 13 )
$318.95
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$399.95
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.
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$279.99
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$466.99
$251.99
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$420.29
Hurst Competition Mastershift installation kits are for quality replacement or column shift conversions. Components are heat treated for longer life, and made from the highest quality dependable materials. Linkage, boot, and hardware are included.
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$277.95
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$378.95
Hurst Mopar Comp Stick kits will provide your vehicle's center console with a whole new look. They include a billet aluminum CNC-machined console plate with the Hurst emblem, a stainless steel Hurst engraved handle sleeve, and a shifter knob with a recessed Hurst emblem. Give your late model Mopar that old-school look. Pick up one of these Hurst Mopar Comp Stick kits and dress up your interior.
( 14 )
$499.95
Shifnoid electric shifter solenoid kits provide hands-free automated shifting for accurate and consistent shifts points. They are designed to wire into any rpm activated switch, timer, or push button. The Shifnoid electric shifter solenoid kits are available for B&M, Hurst, or TCI shifters, and include the required aluminum bracket to mount the solenoids. Now with the help from the Shifnoid electric shifter solenoid kits, you can make hundreds of runs down the race track and ensure reliable, consistent shifting.
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$299.99
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$323.99
Go from forward shift to top shift with Trail-Gear Top Shift conversion kits. TG's conversion "C" kits are the most complete packages for those of you running a dual T-case setup. These kits contain all new parts and are machined to accept 4.7 input gears. Trail-Gear Top Shift "C" conversions include everything you need—even a twin stick—to accomplish your conversion properly. These kits include: * Shift rails * Shift fork * Shift fork tube * Roll pins * Twin stick shift kit * T-case block off plate * Gaskets
Not Yet Reviewed
$379.99
If you're into aggressive street driving and occasional track driving, McLeod Street Extreme clutch kits hold up to 700 lbs.-ft. of torque with street tires and moderate engine mods. These SFI-approved packages are the perfect upgrade for high-horsepower Mustangs (and other cars) that need reliable shifting on the street and the track. They feature a dual-faced ceramic friction disc, high clamp load pressure plate, pilot tool, throwout bearing, and pressure plate bolts (where applicable). You can run your pony with complete peace of mind. Street-friendly and track-proven, a McLeod Street Extreme clutch kit is your best decision. Order the model recommended for your application.
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$365.00
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$525.00
Go from forward shift to top shift with Trail-Gear Top Shift conversion kits. TG's conversion "B" kits are for those of you running a dual T-case setup. You need to block off the unused hole and you'll need a new top shifting shifter. These "B" kits contain what you need to accomplish your conversion properly. The parts are all new and machined to accept 4.7 input gears. Trail-Gear Top Shift "B" conversions include shift rails, fork, fork tube, and roll pins—plus, T-case shifter kit, block-off plate, and gaskets.
Not Yet Reviewed
$279.99
TCI Pro Super transmission overhaul kits contain the same parts and pieces used in building TCI Streetfighters. You will receive components normally replaced on a transmission rebuild, along with new performance frictions and steels, plus a Trans-Scat valve body kit, which enables you to change the valve body to a manual/automatic setup that delivers both a good solid shift suitable for towing applications and a competition-quality shift for drag racing. Features: * Seals, gaskets, and bushings * High performance frictions and steels * Reusable-type pan gasket * Adjustable modulator * High-volume filter * Drain plug kit * Trans-Scat valve body kit * Performance band included in 700R4, 4L60E, and 2004R kits as they normally require a band during regular repair cycles
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$304.95
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$481.95
B&M Transkits give you the same high-quality components that are used in all B&M Street and Strip transmissions. They include high performance friction materials, a complete overhaul gasket set, a drain plug kit, and all of the parts necessary to convert your valve body into a full manual/automatic valve body. These improvements enhance shift feel, while retaining full automatic features. The Transkits come complete with full instructions on how to assemble your transmission to B&M specifications (except BMM-70232 and BMM-70233). They also include special directions on how to modify your case, pump, and components.
( 44 )
$449.95
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$499.95
Pioneer automatic transmission Super Kits are available for a variety of applications. These rebuild kits furnish all of the seals, gaskets, filters, bushings, bands, and other components needed to overhaul specific transmissions. The parts repair both internal and external leaks, while eliminating slips and shudders, restoring shift performance. Super Kits also include both friction and steel clutch plates. Assembling all of the small parts you'd need for a transmission rebuild would be a time-consuming and frustrating task. Everything you need is packaged together here for you. Order the kit recommended for your vehicle and transmission.
( 4 )
$277.99
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$284.99
Summit Bucks
TCI Maximizer rebuild kits are ideally suited for off-road, towing, and other severe-duty applications. Each kit contains gaskets, seals, new premium-quality frictions, steels, a high-volume filter, and a drain plug. Also included are valve body recalibration modifications, which provide crisper shifts without the harsh feel found in kits designed for racing. Durability is improved because less heat is generated per shift than is associated with the OEM shift characteristics. TCI Maximizer rebuild kits also increase the torque capacity of the transmission to make towing or off-roading a breeze.
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$333.95
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$391.95
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 )
$352.46
Let these Shifnoid CO2 shifters do the shifting for you. Shifnoid CO2 shifters use a large solenoid for fast, positive shifting, and no modifications are necessary for installation. Just bolt the pre-assembled unit to the back of your shifter, plumb the air line, attach two wires, and you're ready to go.
( 6 )
$359.99
On Sale
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 )
$462.99
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$583.99
$416.69
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$525.59
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