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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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.
( 332 )
$174.95
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.
( 129 )
$94.99
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$1,949.99
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
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
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
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.
( 20 )
$94.99
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 )
$172.99
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$217.99
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
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
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
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
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
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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$1,092.99
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 )
$61.99
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$397.99
Artec Industries JL/JT APEX front axle armor kits include everything you need to make your factory housing the strongest it can be—including APEX front axle truss, front LCA skids, and inner C-gussets. Order the armor recommended for your Jeep application. Product details: * Patent pending APEX truss peaked top design provides more rigidity than a flat top truss design * Truss is CNC precision laser-cut in-house from 1/8 in. mild steel for a lightweight yet strong solution—only 6 lbs. * Truss is CNC precision-bent in-house for a great fitment; literally drop the truss in place on the axle and it's ready to weld—no puzzle piece assembling * Designed using 3-D models directly from Dana Corp and Jeep for an amazing fit and clearances with surrounding components * 70 percent less welding needed than previous truss designs means less warping, faster turnaround, and lower costs * All long seams are bent so you don't need to spend time welding them together * APEX design continues under the OEM coil buckets for complete end-to-end axle reinforcement—an industry first * Dimpled holes provide weight reduction, rigidity, and strength * Contours both the cast steel differential and FAD (front axle disconnect) and can be welded with normal MIG welder and moderate pre-heating and post-heating * Provides worry-free wheeling of up to 40 in. tires on stock JL axles * Bridges the front axle disconnect (FAD/CAD), shown to be one of the weakest sections of the front axle * Low-profile design doesn't go over differential and allows usage in vehicles with only slight lift * Front LCA skids and optional JL Shield are made from 1/4 in. steel * Inner C-gussets are made from 3/16 in. steel
Not Yet Reviewed
$235.45
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
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.
( 4 )
$35.95
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 )
$18.99
Artec Industries Ford SuperDuty front axle trusses deliver a revolutionary low-profile design. They take the years of race and recreational abuse of Artec's first generation of trusses and add additional strength and functionality. Their key feature is how the truss top now bends around the differential for a better fit and clearance, making them ideal for vehicles needing more up-travel or for those building low center of gravity vehicles. The overall low-profile design means your axle is stronger, sleeker, easier to fit into any vehicle, and less likely to interfere with vehicle components. Features: * 3/8 in. thick mild steel truss top and 1/4 in. mild steel ram mount and gussets * Precision CNC-cut and bent for great fitment * Truss has super low-profile allowing better clearance for oil pans * Truss spans entire length of axle for complete reinforcement of the axle tubes * Truss is reinforced using interlocked 1/4 in. thick gussets for maximum strength and easy assembly * Main interlocking gussets are wider than Gen1 trusses adding overall strength to truss * Internal gussets conform tightly to the contours of the differential allowing you to weld to it for additional strength and rigidity * Truss is clearanced for differential breather tube
Not Yet Reviewed
$319.99
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 )
$369.99
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$429.99
FTI Performance offers front pump gears for your Powerglide racing transmission pumps. Available in standard and oversized, these high-quality components will make your repairs and rebuilds a success—not to mention your performance at the track!
( 1 )
$31.99
Summit Bucks
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.
( 22 )
$18.99
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.
Not Yet Reviewed
$544.07
Summit Bucks
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 )
$6.37
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