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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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Spicer Drivetrain Products Front Axle Shafts
Spicer Drivetrain Products front axle shafts feature an increased U-joint size that provides 25 percent higher yield strength than original U-joints. They offer unparalleled strength and longer life—the outer stub is re-engineered for added strength; improved snap ring retention reduces shock load failures; and material has been removed from the body and added to the yoke ears (to equalize deflection through the yoke and reduce bearing cap spinning). The axles are made from durable steel, with a micro-alloy improving their strength and a statistically controlled heat treatment ensuring proper hardness. Order the replacement model designed for your vehicle application.
( 131 )
$96.99
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$2,311.99
4x4 Posi-Lok Positive Axle Engagement Systems
Replace your slow, unreliable vacuum or electric front axle engagement system with one of these 4x4 Posi-Lok cable activated systems. The Posi-Lok systems give you direct control of your front axle right from your cab, so they will engage every time. They have a short 1 in. throw to make shifting on the fly easy, and as an added bonus, a 2WD low-range to give you the rear-wheel torque of 4-LO, and the bind-free steering action of 2-HI.
( 338 )
$174.95
Transmission Specialties Powerglide Front Pump Assemblies
Transmission Specialties' Powerglide front pump assemblies have a one-piece design that will not spin out the stator tube like two-piece designs. These Powerglide replacement front pump assemblies have a stiffer steel casting then OE, with a high-strength integral stator support shaft, and include larger pump gears, extra clamping bolts, and redesigned oil circuitry.
Not Yet Reviewed
$479.25
4x4 Posi-Lok Perm-Lok Systems
4x4 Posi-Lok Perm-Lok systems permanently engage the central axle disconnect (CAD) system and couples both front axles. Once installed, the front axles will not pull until the transfer case is engaged. They are ideally suited for fleet operators, and emergency vehicles. Plus, installation is easy and can be completed in approximately 10 minutes.
( 21 )
$94.99
RT Off-Road Mechanical Axle Engagement Systems
RT Off-Road mechanical axle engagement systems replace the vacuum actuator with a cable operated actuator that puts the driver in control of the engagement from inside the cab. The axle engagement is much more reliable since it is directly controlled with the cable. Kits are available for Jeeps with a lift kit up to 3 in., and for lifted applications 3 in. or higher.
( 6 )
$133.99
Alloy USA Axle Lock Kits
Alloy USA axle lock kits affords 4WD when you need it. Your OE vacuum disconnect systems are prone to failure. These permanent replacements allow you to manually engage the front axle from inside the cab. A simple pull of the cable ensures that you will have 4WD for as long as the transfer case is engaged. Always have a backup plan with Alloy USA axle lock kits.
( 28 )
$174.99
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$217.99
4x4 Posi-Lok Front Axle Engagement Replacement Parts
4x4 Posi-Lok gives you the advanced edge of your stock front vacuum or electric front axle engagement systems. They also have you covered when it comes to replacement parts. From cables to shift forks, couplers, gaskets, etc., keep your four-wheel drive engagement systems operating smoothly with genuine 4x4 Posi-Lok replacement parts.
( 16 )
$44.99
Silver Sport Front Shift Kits
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
TCI Circle Track Automatic Transmission Front Pump Drives
These TCI Circle Track automatic transmission front pump drives will allow you to run without using a torque converter. They include the crankshaft hub adapter, an input spline adapter, a front pump seal, and mounting hardware. The front pump drives are available in 1, 2, or 3-piece configurations, based on your vehicle's transmission model.
Not Yet Reviewed
$255.95
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$318.95
Silver Sport STX Shifter Front Shift Conversion Kits
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
Auto Metal Direct Front Wheel Bearing Caps
Auto Metal Direct front wheel bearing caps finish your classic's wheels with original style. These AMD stamped steel caps are exact reproductions of the factory original "button-style" units. They are zinc plated. Little details matter; restore you classic's appeal with Auto Metal Direct front wheel bearing caps.
( 14 )
$20.99
Yukon Gear & Axle Dana 30 Disconnect Block-Off Plates
Yukon Gear & Axle Dana 30 disconnect block-off plates are needed when you want to remove your troublesome 4WD disconnect and convert to one-piece axles. These plates are designed to cover the hole in your axle housing left when you remove the vacuum motor. Yukon Gear & Axle Dana 30 disconnect block-off plate kits include: * Block-off plate * Block-off plate gasket * Inner axle seals
( 2 )
$43.99
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$110.99
ATI Super Pump Front Pumps
ATI Super Pump front pumps are CNC-machined from billet aluminum or permanent-mold aluminum castings for precision and durability. Re-engineered lubrication circuits allow for increased flow volume in all critical areas. ATI increased the thickness of the pumps to improve oil pressure and volume at low rpm, resulting in a cooler-running transmission and converter. Features: * Superior pressure * Improved trans-brake hold * Prevents stator tube spinout
( 4 )
$331.99
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$999.99
TCI Automatic Transmission Front Pumps
TCI automatic transmission front pump assemblies are a direct bolt-in replacement for the stock piece, and they ensure proper fluid circulation and consistent line pressure in many performance applications. These easy-to-install units are precision machined, inspected, and tested for quality. TCI front pumps are available for a variety of transmission types. Choose the model that's designed for fitment on your vehicle.
( 9 )
$117.95
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$587.95
Spicer Drivetrain Products Front Axle Stubs
Spicer Drivetrain Products front axle stubs are available for a range of applications. These quality-built steel components fit both right and left sides. When you need replacements, these front axle shafts offer a premium, competitively priced option from a name you know and trust—Spicer.
( 8 )
$62.99
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$297.99
Sonnax Front Endplay Shims
Sonnax front endplay shims help solve the issue of too much front endplay. Whether it's due to various components wearing over time or the direct result of modifications—front endplay that has strayed from precise specifications can lead to costly repairs and/or replacements. Tighten things up to proper specifications with the set of Sonnax front endplay shims recommended for your transmission application.
( 1 )
$6.99
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$8.99
Sonnax Front Stator Support Bushings
OE front stator support bushings in automatic transmissions tend to wear-out prematurely due to their sub-optimal material composition. Replacement front stator support bushings from Sonnax are made with upgraded materials designed to outperform OE bushings—and provide superior wear characteristics to eliminate early deterioration. Restore critical clearances and resist untimely wear with these quality replacement front stator support bushings from Sonnax. Important note: In some cases it may be necessary to hone the bushing I.D. slightly for proper fit due to stator shaft variations.
( 1 )
$7.99
Ratech Front Bearing and Seal Kits
Choose Ratech for front bearing and seal kits that meet and exceed OEM specs. Their kits replace your worn bearings for improved handling and safety. Noises that intensify while accelerating or taking a turn could mean worn bearings. Check it out and then restore control to your front-end with Ratech bearing and seal kits.
( 14 )
$23.50
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$35.79
ACDelco Crankshaft Front Seals
ACDelco designs their high-quality crankshaft front seals to fit various radial shafts and seal in engine oil while keeping dirt and water out. Featuring synthetic rubber or plastic composite materials, these engine seals conform to the rotating crankshaft sealing surface to help provide leak-free operation. The OE-style replacements provide the same fit and performance you expect from all General Motors parts. They're available in models for virtually any vehicle on the road today.
( 24 )
$24.99
ATI Front Pump Gears
Replace your worn-out or damaged automatic transmission oil pump gears with ATI front pump gears. Their high-quality precision construction exceeds OEM pump specifications. ATI Performance Products has been producing quality, state-of-the-art race products since its founding in 1961 as a modest general transmission shop. ATI designs and manufactures an extensive range of high performance parts as well as a multitude of performance-enhancing internal transmission components. Order the gear model recommended for your transmission application.
( 5 )
$35.95
Transmission Specialties TH400 Front Pump Assemblies
Transmission Specialties TH400 front pump assemblies are designed to replace your worn transmission pump. These components are manufactured to TSI's rigorous specifications that will easily exceed both the quality and performance of your factory pump. For transmissions and components for drag racing and high performance street vehicles, TSI has got you covered.
( 1 )
$544.07
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$659.29
Crown Automotive 4WD Front Axle Actuators
In late 1980s to mid 90s, Jeep used a vacuum actuator to shift the transfer case and corresponding front axles in and out of 2WD, and high or low 4WD. Crown Automotive 4WD front axle actuators will replace faulty vacuum switches to improve your vehicle's get-up-and-go, no matter the terrain.
( 8 )
$30.99
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$92.99
Artec Industries Dana 60 Front Hydro Ram Mounts
When you need only the strongest parts to keep it together, beef up your front-end with Artec Industries Dana 60 Front Hydro Ram mounts. Their overall low-profile design means that your axle is stronger, sleeker, easier to fit, and less likely to interfere with rocks or other parts of your vehicle. The mounts' unique design places your ram in its most effective and strongest location—close to the axle centerline, not high above it—and yet they protect it from the rocks. The Ram mounts extend to the end of the axle tube, providing reinforcement to the axle itself against bending and shearing. They're designed to take serious abuse and protect your steering. Artec Industries Dana 60 Front Hydro Ram mounts are available for fitment on a variety of applications, from 1960 and up. Product features: * 1/4 in. mild steel ram mounts and gussets are precision CNC-cut and bent for great fitment and reinforcement against damage * Ram mounts and gussets feature drainage holes for easy cleaning and reduced weight * Mounts double as an axle skid plate, offering protection for your ram and tie rods—and span the length of the axle tube for more reinforcement against bending and shearing * An additional 1/4 in. thick bolt-on skid plate in front of the differential allows easy removal of gears; it's bolted using included countersunk bolts, which don't get hung up on obstacles and hold up against trail damage * These kits require general welding and fabrication skills
( 2 )
$379.99
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$429.99
ATP Front Pump Bushings
ATP offers front pump bushings for thousands of applications. These inexpensive replacement rings offer a no-compromise, exact fit for use with countless automatic transmission types and sub-models. They're machined to meet or exceed original equipment specs. Order the bushing recommended for your vehicle.
( 1 )
$5.99
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$6.99
