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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Spicer Drivetrain Products CV ball seat repair kits can be used on everything from passenger cars and commercial trucks, to off-highway equipment and industrial applications. Technicians trust genuine Spicer repair kits to get the job done right the first time. For double cardan CV driveshafts that are vibrating, grinding, or emitting clicking noises, Spicer Drivetrain CV ball seat repair kits are your answer for an efficient replacement of a worn CV ball socket.
( 3 )
$34.99
Sonnax 3rd accumulator check ball and seat sets prevent circuit leaks, stop 3-2/2-3 timing issues, and prolongs the life of the 3-4 clutch. Wear or debris can prevent the ball and seat from correctly sealing the 3-4 apply circuit. Sonnax sets will solve the sealing problems for improved performance.
( 4 )
$9.12
Moser Engineering kits eliminate the factory C-clip axle retention and provide a safety hub with sealed, press-on bearings. The kits are required when replacing factory C-clip axles with Moser custom alloy axles.
( 41 )
$105.00
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$210.00
C-clip eliminators, which were originated by Strange Engineering, are required by drag racing rules for good reason. C-clip type axles are retained by a clip above the spline portion of the axles. When the stock axle or differential breaks, the entire axle/brake/wheel assembly can slide completely out of the housing. Strange's C-clip eliminators eliminate wheel loss and worn bearing areas. The bearings are retained and the axles are held securely in place by the C-clip eliminators, which are bolted to the stock axle housing through the existing backing plate holes.
( 24 )
$188.99
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$284.99
American Powertrain shifter handles are recommended as stock-style replacements for classic GM muscle cars and Mustangs. The 10 in. long polished stainless steel handles are a standard 2-bolt style. Replace worn or damaged gear shift handles with American Powertrain shifter handles. Refer to Application tab to confirm fitment.
( 1 )
$171.99
Clutches are subjected to continuous wear and tear. LuK clutch kits are made with premium quality components, engineered and manufactured to be problem-free. These kits are functionally tested to meet OEM performance specifications and provide an innovative and quality engineered clutch kit. As an original equipment supplier, LuK develops the performance specifications for individual vehicle applications.
( 372 )
$100.99
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$413.99
SPEC Mini Twin multi-disc clutch and flywheel kits are intended for limited street, drag race, and road race applications. The Mini Twin assemblies are available in different clutch disc and flywheel materials, clamp loads, disc configurations, and diameters depending on the particular application and on the planned use the of vehicle. SPEC manufactures Mini Twin multi-disc clutch and flywheel assemblies to industry-leading .001 in. tolerances for perfect rotational properties and concentric actuation to optimize balance, drivability, and clutch life. Additional features of SPEC Mini Twin multi-disc clutch and flywheel kits: * Flywheel and track-spec hardware are included in each kit * Rebuildable by SPEC or the end-user * Replacement components are always available * Also excellent for drift, time attack, pulling, and rally
( 2 )
$1,597.50
Hurst's popular Indy 3-Speed shifters are available for pickup trucks. They are the perfect replacement for old floor shifters or an ideal column shift conversion and have the following features: * Extended chrome-plated stick to accomodate pickup truck seat height * Precise selector pin mechanism * Spring-loaded gate for positive shifts * All parts plated for protection * Stamped with Hurst/Indy identification * Complete with all linkage, mounting hardware, and easy-to-follow installation guide * Optional Indy boot and plate HUU-1148429 recommended for finished appearance
( 18 )
$470.95
Moser Engineering replacement C-clip axles are non-tapered with hardened bearing seats and machined C-clip grooves to fit OEM applications. These forged steel street axles are available in nearly two dozen lengths—and if you choose to narrow your rear-end at a later time, Moser axles can be shortened and re-splined. Order the model designed for your vehicle and axle application.
( 263 )
$170.00
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$510.00
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
Manufacturer Rebate
A 4x4 and traction go hand-in-hand; however, standard (open) differentials allow each wheel to turn independently to eliminate binding in turns. Off-road, this becomes a problem as engine power takes the path of least resistance—to the wheel with little or no traction. Limited slip differentials offer some improvement, but too often the slipping is not "limited" enough to maintain forward progress. Automatic locking differentials also have disadvantages; noisy when disengaging, they can also upset on-highway driving characteristics. Created to provide traction on demand, without sacrificing highway driving performance, ARB Air Locker differentials employ a 12 V ARB air compressor (sold separately) to pneumatically operate a solid and durable locking mechanism inside the differential. When activated, the Air Locker prevents the differential gears from rotating and the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates just like a conventional open differential. ARB Air Lockers are available in over 100 configurations for a wide range of vehicles and can be installed in both front and rear axles. Installation should be performed by a qualified differential technician, although no special tools or skills are required, apart from those necessary for fitting a standard differential. ARB also offers three compressor models suitable for Air Locker operation, two of which can be used to inflate tires and operate other equipment. Additional features of ARB Air Lockers include: * Vastly improved traction means less reliance on momentum, reducing the likelihood of vehicle damage * Easy, convenient operation without leaving the comfort and safety of the driver's seat * Ultra durable and extremely strong; only the highest quality materials used in construction * Patented gear technology and 2-piece design ensures optimal locking strength * Forged gears provide superior strength and durability * Incredibly simple, yet effective, design employs minimal moving parts for maximum reliability * Thoroughly tested and proven * Most sold as kits with differential, activation switch, solenoid valve, air line, and bulkhead fittings * Front and rear Air Lockers available for most makes and models * For 4WD and 2WD applications * Easy maintenance; no special additives required * Also offered in ARB Traction Packs that include two Air Lockers, a compressor, and accessories for tire inflation
( 11 )
$1,091.00
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$2,799.95
SPEC tuned billet flywheels are manufactured and developed according to how specific vehicles react to changes in rotating mass in particular driving environments. They are not generic one-size-fits-all lightweight flywheels--though they can be used for an array of driving habits and racing/high performance applications. All SPEC tuned billet flywheels are manufactured from only the highest quality steel and aluminum. They are machined to industry-leading .001 in. tolerances ensuring a flat seating surface for the clutch and smooth rotational qualities for excellent balance, drivability, and extended clutch life.
( 15 )
$314.10
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$629.10
Moser Engineering replacement alloy axle shafts feature high-quality materials that can stand up to everyday use. They use the finest alloy for these replacement shafts, giving you a custom alloy shaft that has been induction heat-treated, 100 percent magna-fluxed, and has a hardened bearing seat for years of worry-free use. Available for passenger car, truck, and SUV applications, Moser Engineering replacement alloy axle shafts are the perfect fit for your vehicle.
( 55 )
$243.00
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$499.00
Silver Sport offers STX Shifter front shift conversion kits for a variety of manual transmission applications—including Tremec TKX. The kits allow you to move the shifter from the stock rear location to the front-shift position at a more bench-seat-friendly 12 in. behind the clutch housing. Detailed instructions are included to walk you through the conversion process.
( 1 )
$579.95
Moser offers a line of forged steel C-clip street axles for car and truck rear-ends. These replacement axles are non-tapered, with hardened bearing seats and machined C-clip grooves, to fit OEM applications. If you choose to narrow your rear-end at a later time, Moser axles can also be shortened and re-splined. The axles are machined from 1541H alloy steel for durability, and are available individually or in pairs for direct fitment on a wide range of makes and models.
( 39 )
$170.00
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$335.00
Sonnax valve body check balls are lightweight orbs that seal better. Manufactured from tough, wear-resistant imidized plastic, these check balls conform to the separator plate ball seats, creating a good seal. Steel balls are heavy and hard, causing wear on your separator plate seats from repeated high impact, while elastomer rubber ones wear easily, reducing their size and sealing ability. For excellent results from your valve bodies, service them with Sonnax imidized check balls.
( 12 )
$5.67
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$6.18
Yukon Gear & Axle pinion shims help seat your pinion gear properly. These steel inner and outer pinion shims assist you in setting up the right depth and preload for your application. If you need pinion shims, Yukon Gear & Axle offer quality and value.
( 19 )
$18.99
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$422.99
Protect your bearing investment with Moser Engineering inner housing seals. Worn bearing seals can fail and allow dirt in and grease to splatter out, leading to the bearing seizing and then failing. These quality inner housing seals are designed to be used with 1.531 in. and 1.562 in. ball bearings. Install with the flat side facing you and drive into the housing end until it seats into the proper position.
( 7 )
$6.00
Aisin clutch kits combine high-quality clutch components to deliver optimal drivetrain efficiency. Providing excellent power transfer with precise pedal feel, they are always OE-matched. Kits include clutch cover and disc, release bearing, pilot bearing (where applicable), and a vehicle specific alignment tool for trouble-free installation Additional features of Aisin clutch kits include: * "Hot Seating" process stabilizes the diaphragm spring * Diaphragm spring turnover (DST) cover improves release * Higher load capacity * Premium-quality, heat-resistant, and less abrasive facings ensure extended service life * Disc spring design enhances engagement and release * Floating rubber cushions or twin-hub design improve rigidity to reduce noise, vibration, and harshness
( 4 )
$95.99
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$182.99
Strange pinion depth shims allow you to seat your pinion gear perfectly. They're made of durable steel to withstand years of use and abuse. Strange Engineering offers these shims in a variety of thicknesses to custom-fit your axle model application. Installing gears is made easier with a set of Strange pinion depth shims.
( 4 )
$19.99
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$59.99
TransGo automatic transmission TFSC SHIFT KIT Valve Body Repair Kits (P/N SKTFSC) fit 1960 and newer Chrysler, Dodge Plymouth, AMC, and Jeep vehicles with both small case 3-speed transmissions (such as the A904, A998, A999, TF6 and 30RH), as well as big case 3-speed transmissions (such as the A727, TF8, 36RH and 37RH) with or without lock-up. Common complaints on these transmission are soft shifts, loss of power on launch, pump bushing burn-up, TC clutch failure, stalls in reverse when hot, converter hub failure, and torque converter drain-back. * Features and benefits: The Shift Kit includes valve body components and modifications designed to deliver short smooth shifts and a better TC clutch apply. There are several innovative components in this kit. For instance, the line-to-converter feed system which helps the unit run cooler and promotes longer TC clutch life. Also included is a TransGo pioneered manual valve to reduce overnight forward and reverse delayed engagement complaints due to torque converter drain-back. Lastly, the kit can be installed with the transmission in the truck. * Corrects/Prevents/Reduces: -- TCC slip or shudder -- Reduces converter drain-back -- Soft shifts -- Loss of power on launch -- Converter hub failure -- Pump bushing failure * Includes: -- USA-made hardened steel manual valve with converter charge in park provision *(fits 1966 an dlater only) -- Mumbly peg (for easy detent spring and ball installation) -- PR valve shim, spring seat and inner spring for line-to-converter feed provision as well as outer spring for increased pressure -- Bypass valve spring -- Bypass ball spring -- Converter regulator valve spring
Not Yet Reviewed
$29.57
Spicer Drivetrain Products pinion shims help to properly seat your pinion gear. These steel inner and outer components assist you in setting up the proper depth and preload for your specific application (confirm fitment). Experience OE fit and performance with Spicer Drivetrain differential carrier bearing shims.
( 1 )
$46.99
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$81.99
Yukon Gear & Axle Ultimate 88 axle kits offer maximum strength for the trails! Manufactured from 4340 chromoly, these double-drilled axles eliminate your factory C-clips and convert your housing to a stronger C-clip eliminators. No welding is required--just a little cutting to remove the factory axle bearing seat. Get years of hard use on the trails with Yukon Gear & Axle Ultimate 88 axle kits.
Not Yet Reviewed
$1,017.99
Sticking of bypass components, spring relaxation, or poor ball seat in Ford 4R100 and E4OD units will allow the bypass to open at lower cracking pressure. This reduces TCC (Torque Converter Clutch) apply pressure, cooler flow at the overdrive section, and radiator flow responsible for heat transfer. Sonnax automatic transmission cooler bypass valve kits allow the bypass valve assembly to be rebuilt, salvaging the OE fittings and maintaining cracking pressure at 70 to 75 psi. Features: * Hardened steel T-valve provides secure check ball seat and adequate bypass flow * New spring cracks open at 70 to 75 psi to provide lube if cooler is blocked or restricted * Hardened alloy steel check ball resists damage * Seven new O-rings provide positive seal for cooler circuit * Drop-in Zip Valve parts install quickly and easily Contents: * T-valve * Spring * Check ball * O-rings -- One small -- Two medium -- Two large -- Two extra-large
Not Yet Reviewed
$16.74
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