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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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American Powertrain Hydramax Hydraulic Clutch Release Systems
Skip the clunky old mechanical linkage and install American Powertrain Hydramax hydraulic clutch release systems. They easily install in almost any rear-drive vehicle. The patent-pending adjustable master cylinder bracket allows you to mimic any original clutch rod angle, giving you a smooth, modern clutch feel without hacking up your firewall. The systems are designed to work with original and aftermarket pedals and are available for most vintage 4-speeds, along with TREMEC T5, TKO, Richmond, T56, and Magnum 6-speed transmissions. These systems come with the nickel plated firewall mount, volume-matched master cylinder, as well as a reservoir kit, lines, fittings, model-specific pedal mounting hardware, and model specific internal or external slave cylinder.
( 83 )
$499.50
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$1,195.95
RCV Ultimate IWE Eliminator Sets
Completely do away with your vehicle's OEM IWE with RCV's Ultimate IWE eliminator sets that contain their ultimate 4340 sleeves. Simply remove the stock IWE and install these sleeves in their place. Once installed, your hubs become fully locked to the axle shafts allowing you to use the transfer case to shift in and out of 4WD. Confident in their design and strength, these gears come with RCV Performance's limited lifetime warranty against breakage! Select a set for your vehicle.
( 3 )
$199.95
Shiftworks Shifter Conversion Kits
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.
( 75 )
$101.99
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$531.99
Mile Marker Part-Time Transfer Case Conversions
Mile Marker part-time transfer case conversions are perfect for owners of full-time 4WD vehicles. You can count on these kits to reduce wear and tear on your drivetrain, as well as to create some savings at the gas pump. Each kit has been carefully designed to provide years of trouble-free service.
( 27 )
$99.00
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$299.00
McLeod Hydraulic Throwout Bearing Conversions
McLeod hydraulic throwout bearing conversions are designed to convert your vehicle over to hydraulic power. They produce a softer pedal effort, giving you more manageable and smoother clutch operation. Also included are stainless steel braided hoses, steel fittings, an aluminum slave cylinder and a remote reservoir. The McLeod hydraulic throwout bearing conversions use your stock pedal and are easy to install and adjust.
( 14 )
$465.00
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$645.00
McLeod Direct-Fit Hydraulic Conversion Kits
McLeod direct-fit hydraulic conversion kits offer better performance and better durability for your muscle car. Aging mechanical linkage will not perform to your best advantage. These kits will improve your clutch system which you will immediately feel in pedal effort and smoother clutch operation. And not only is installation easy, they feature self-adjusting bearings so maintenance is easier too--no adjustments every few months! Are you still dealing with inefficient mechanical clutch linkage? Let McLeod direct-fit hydraulic conversion kits make cruising in your special ride easier.
( 69 )
$359.00
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$375.00
Lokar Floor Mount Cable Conversion Kits
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.
( 6 )
$118.95
Silver Sport Hydraulic Clutch Conversion Kits
Make installing your manual transmission easy with Silver Sport hydraulic clutch conversion kits. These high performance, long-life packages deliver modern technology with less pedal effort tailored to your needs. These SST kits provide up to a 20 percent lighter clutch effort compared to mechanical linkage, provide more room for headers, and cleans up your engine compartment. Choose the one designed for your application.
( 1 )
$329.95
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$399.95
On Sale
Holley Hydraulic Throwout Bearing Conversion Kits
Experience the benefits of a modern hydraulic clutch system—with improved drivability and reduced maintenance requirements—courtesy of Holley's new line of hydraulic clutch conversion kits. These throwout bearing conversion kits are designed specifically for Chevrolet Camaro and Pontiac Firebird models and allow for easy conversion from a mechanical clutch linkage to a modern hydraulic clutch system. They include all necessary components for a straightforward installation: clutch master cylinder, clutch pedal with pad, clutch rod assembly, master cylinder mount and reinforcement plate, master cylinder reservoir kit, and all required mounting hardware. Pedal ratios have been optimized for perfect pedal feel and full engagement of the clutch system. With so many engine and transmission combinations available, Holley has left it up to the installer to decide on which release (or throwout) bearing and hydraulic lines will be used. The Holley hydraulic conversion kit is engineered to fit each model perfectly, ensuring a trouble-free installation and optimal performance. Each kit offers several advantages over traditional mechanical clutch linkage systems. First and foremost, they provide a smoother and more precise clutch engagement, resulting in improved drivability and reduced wear and tear on clutch components. Additionally, the hydraulic system eliminates the need for periodic adjustments and maintenance that are typically required with mechanical clutch linkages and the use of many modern transmissions such as the T56, TR6060, Magnum, TKX, TKO, and classic 4-speeds. Order the conversion kit recommended for your vehicle.
( 1 )
$382.95
$344.65
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$357.95
On Sale
Hays Hydraulic Release Bearing Kits
Hays hydraulic release bearing kits will convert your favorite factory hydraulic-equipped car from a mechanical-style to hydraulic-style release bearing. Hays throwout bearings offer full adjustability, reduced pedal effort, and an easy set-up with most single or dual disc clutches. These kits are designed to fit various manual transmissions; order the model recommended for your vehicle and tranny application. Features and benefits include: * Improved clutch engagement and disengagement * Adjustable design provides increased travel over stock release bearing * Retrofit kits offer a simple way to add easy-effort hydraulic clutch actuation * Floating design bearing with large O-rings and PTFE backup rings to eliminate fluid leakage * Kits include bearing assembly, bearing retainer (where required), mounting hardware, adjustment shims, and -3 AN feed line
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$306.95
$276.25
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$699.95
Sonnax Torque Converter Conversion Kits
Sonnax torque converter conversion kits are designed to upgrade the existing torque converter for improved performance characteristics like better acceleration, increased power, and smoother shifting. Many conversion kits focus on changing the stall speed, which is the engine rpm at which the torque converter fully engages, allowing for more aggressive launches or better towing capability depending on the chosen stall speed. Some kits include modifications to improve the lock-up function of the torque converter, leading to better fuel economy at cruising speeds by eliminating slippage. The torque converter conversion kits by Sonnax come with various internal component options, allowing fine-tuning to match your vehicle's specific needs and your driving style.
Not Yet Reviewed
$383.99
Mile Marker Hub Nut Conversion Kits
Change your automatic hubs to manual locking hubs with Mile Marker hub nut conversion kits. Kits contain nuts and locking rings that are lightweight, strong and corrosion resistant. Enhance and protect your rig's drivetrain system with Mile Marker hub nut conversion kits.
( 18 )
$59.00
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$99.00
TransGo Torque Converter Conversion Kits
These TransGo torque converter conversion kits are designed to correct converter fluid flow to the primary pump area so the torque converter will stay full under high load conditions. They are designed for use with non-lock up torque converters and will help to increase the reliability of your automatic transmission. Available for multiple transmissions, the TransGo torque converter conversion kits will get your transmission performing correctly again.
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$25.99
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$66.56
TCI C-4 Pan Fill Conversion Kits
These TCI C-4 pan fill conversion kits allow owners of Ford C-4 transmissions with screw-in dipsticks to use an aftermarket aluminum transmission pan. Drill and tap the pan to accept the fitting, screw in your dipstick just like you would with the factory pan, and you're all set.
( 2 )
$22.95
TransGo Lockup Valve Kits
These TransGo lockup valve kits contain new parts to maximize torque converter life in high-mileage OEM transmissions. They will help your transmission to operate more efficiently and improve overall reliability.
( 6 )
$54.14
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$66.49
On Sale
B&M Hammer Shifter Conversion Kits
B&M Hammer shifter conversion kits are designed for installing earlier 3-speed transmissions into late model Mustang applications. They include a new cable, a transmission shifting arm, and a shifter cable mounting bracket.
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$173.95
$156.55
Dorman 4WD Vacuum Delete Wheel End Couplers
Dorman 4WD vacuum delete wheel end couplers provide an OE Fix to these high-failure prone parts. Dorman patented replacement wheel couplers are designed for long-lasting durability and trouble-free performance, plus they come as a complete kits, including all required components for a complete repair. These direct replacements are made of corrosion-resistant high-quality materials, and will deliver a proper fit every time.
( 3 )
$115.78
Yukon Gear & Axle Spin Free Locking Hub Conversion Kits
An upgrade that gets you more mileage per gallon and hubs that are easier to service, Yukon Gear & Axle spin free locking hub conversion kits are an enhancement anyone would want on their 4WD vehicle. Whether you service your vehicle yourself or you have a trusted mechanic, you don't usually like to keep difficult or expensive-to-fix things on your ride. These kits are not only easier to service, they help reduce wear and tear on your drivetrain components. They allow your front axle and drivetrain to disengage when in 2WD, preventing premature wear and improving fuel economy. Yukon Gear & Axle kits are available for various makes and models from the 1980s and up. Features include: * Reduced drag, resulting in greater fuel economy * Replaces vulnerable and expensive factory unit bearing * Kit includes heavy-duty 4340 chrome-moly outer axles * Premium hubs allow driver selectability * Complete kits contain all necessary components
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$2,557.99
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$3,613.99
Trick Flow® C-4 Pan Fill Conversion Kits
These Trick Flow® C-4 pan fill conversion kits allow owners of Ford C-4 transmissions with screw-in dipsticks to use a Trick Flow® aluminum transmission pan. Drill and tap the pan to accept the fitting, screw in your dipstick just like factory, and you're all set.
Not Yet Reviewed
$19.99
Shiftworks Slap Shift Shifter Conversions
Shiftworks offers Slap Shift shifter conversion kits for a variety of applications, including many Chevy Chevelle, Impala, and Camaro models from the 1960s and '70s. These kits will convert your factory automatic floor shifter that came in your car to now work with a more modern transmission. Available for 3-speed, 4-speed OD, and even 6-speed automatics, the conversion kits take the guesswork out of a transmission upgrade and make your shifter work as if your car came that way from the factory. Order the kit recommended for your vehicle and transmission model. Additional details: * Transmission pan bracket * Transmission shift lever * New shifter detent (determines gear positions on shifter) * New console gear indicator * Hardware Kit * Cable sold separately (32 in. cable recommended for 4L80 applications). To add even more fine-tuning adjustability, add in Shiftworks' adjustable shift cable replacement to perfectly dial in your shifter handle positions.
( 1 )
$225.99
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$283.99
Spicer Drivetrain Products Locking Hub Conversion Kits
Spicer Drivetrain Products offers locking hub conversion kits for a wide range of trucks from the 1970s and up. Built to meet OE standards set by Dana, these hub lock assemblies feature black anodized aluminum construction with a steel flange. Dana design, engineering, testing, and manufacturing processes all work in conjunction with one another to ensure unparalleled performance that non-genuine parts simply cannot deliver. Order the Spicer kit recommended for your vehicle.
Not Yet Reviewed
$323.99
Classic Performance Rear Axle Conversion Kits
Classic Performance rear axle conversion kits convert your rear to a 5-lug. If you've upgraded your 6-lug truck to a 5x5 in front, then you need to do the same in the back. These kits come complete with axles and may include spider gear and drums as well. Complete your 5-lug conversion with rear axle kits from Classic Performance.
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$238.99
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$368.99
On Sale
B&M Heavy-Duty Transfer Case Shift Cable Conversion Kits
B&M heavy-duty transfer case shift cable conversion kits replace the failure-prone Z-linkage with zinc-plated steel ends and a bigger (.425 in.) cable to provide solid, long-lasting transfer case gear selection. The 48 in. long cable is an excellent option for lifted builds and the powdercoated brackets will provide years of trouble-free shifts. The cable is compatible with the factory shifter but complements any aftermarket shifter designed to use a factory cable. Features: * Replaces the stock Jeep TJ cable and plastic ends for reliable, positive shifts * Heavy-duty .425-inch cable and 6061 aluminum ends provide a trouble-free, performance upgrade * Perfect solution for Jeeps with suspension and or body lifts * Compatible with factory shift lever for budget friendly replacement * Heavy-duty powdercoated brackets provide excellent resistance to the elements
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$179.95
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$186.95
$161.95
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$168.25
ATS Diesel Performance GM Governor Pressure Solenoid Block Conversions
ATS Diesel Performance GM governor pressure solenoid block conversions are an easy bolt-on upgrade for your factory transmission. They are designed to eliminate shuttle shifting, improve reliability, and enhance transmission performance. Order the model recommended for your application.
( 12 )
$194.99
