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.

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Results 1 - 24 of 1069

Nitro Gear and Axle Master Install Kits

Nitro Gear and Axle ring and pinion gear master install kits use the highest-quality bearings available—no cheap knock-offs here. By using only bearings that OEM vehicle manufacturers do, you can be assured that your differential will be reliable, durable, and quiet for years to come. Take it from the folks who know differentials and know what it takes to provide you with high-quality components. Order the Nitro Gear and Axle master install kit recommended for your application.

1.0 out of 5 stars ( 1 )

$250.00

TCI Automatic Transmission Rear Case Bearings

TCI automatic transmission rear case bearings are designed to take up the endplay in your automatic transmission's tailshaft housing. They include a needle thrust bearing assembly and three different shim thicknesses to adjust the endplay to your specific transmission.

4.92 out of 5 stars ( 12 )

$38.95

FTI Performance Transmission Rear Seals

FTI Performance transmission rear seals allow you to keep your transmission fluid where it belongs: inside! Built to withstand the stresses of racing, these transmission seals are available in several fitment options to accommodate your exact transmission.

Not Yet Reviewed

$5.39

Beck/Arnley Output Shaft Seals

Beck/Arnley output shaft seals will look, fit, and perform just like the originals. Made from the finest materials, they are created to exacting tolerances to ensure performance. Your seals will wear out, and when they do, replace them with quality-made Beck/Arnley products.

Not Yet Reviewed

$7.99

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.

4.74 out of 5 stars ( 53 )

$238.99

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$368.99

Currie 9 in. Crate Rear End Assemblies

Currie 9 in. crate rear end assemblies offer a direct-fit, bolt-in solution for most common car, truck, and Jeep platforms. They feature larger spline axles, heavy-duty components, and internals from leading manufacturers. These axle assemblies are built to exacting standards matching factory specifications for suspension mounting points, pinion location, overall axle width, and wheel bolt pattern for hassle-free installation. Prior to shipping, skilled craftsman meticulously assemble essential parts to deliver years of trouble-free operation for your vehicle. They offer a broad range of gear ratios, performance differentials, or even a spool—if that's your thing. You'll be ready in no time for cruising, racing, off-roading, or just daily driving with Currie 9 in. crate rear end assemblies. Order the kit designed to fit your specific model.

3.5 out of 5 stars ( 4 )

$1,550.00

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$5,100.00

Moser Engineering Rear Axle Housing Ends

Whether narrowing a rear axle housing for bigger tires or just building a new housing for your street car, you will need housing ends to complete the project. Moser Engineering rear housing ends are offered in five popular styles, each CAD-designed to ensure a proper fit. They are forged from mild steel for ease of welding and then fully machined on CNC equipment.

4.86 out of 5 stars ( 58 )

$130.00

Currie 9 in. Rear-End Housing Assemblies

Direct-fit Currie 9 in. rear-end axle housing assemblies have OE mounting points designed specifically for your application. This means that you won't have to spend hours cutting and welding in order to install them. These assemblies are available with disc or drum brakes, axles, bearings, and seals--everything you need to upgrade your rear-end, courtesy of Currie Enterprises.

5.0 out of 5 stars ( 7 )

$1,350.00

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$1,750.00

Rhodes Race Cars Rear Axle Housing Ends

Rhodes Race Cars rear axle housing ends are offered in most popular styles. Whether you're narrowing an axle housing for bigger tires, or just building a new housing for your street car, you'll need housing ends to complete the project. New forged, CNC-machined housing ends are available separately or on any housing that Rhodes sells. These housing ends accept stock bearings and seals, and are versatile for most applications. For instance, the 8.8 in. Ford ends accept the small 9 in. Ford-style bearing, but still work with most 8.8 in. Ford brake set ups. The Chevrolet ends accept the large Ford-style bearing, but still utilize most Chevy drum and disc brake set-ups.

5.0 out of 5 stars ( 4 )

$90.00

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$95.00

Strange Rear Axle Housing Ends

Whether you're narrowing a rear axle housing for bigger tires, or just building a new housing for your street car, you will need housing ends to complete the project. These Strange rear housing ends are offered in five popular styles, each CAD-designed to ensure a proper fit. They are forged from mild steel for ease of welding and then fully machined on CNC equipment.

5.0 out of 5 stars ( 12 )

$144.99

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$149.99

Spicer Drivetrain Products Rear Axle Shafts

Spicer Drivetrain Products rear axle shafts feature application-specific design and engineering, quality materials, precision manufacturing processes, and statistically-controlled testing. Through induction heat treating with a slower scan rate, Spicer delivers more consistent and stronger axle shafts. In addition, the cold-formed rolled spline eliminates the need for machining, which can cause stress fractures and premature failures. The Spicer Drivetrain rear axle shafts are available in a variety of styles, configurations, and options to fit your specific rear axle type.

4.35 out of 5 stars ( 51 )

$117.50

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$889.99

Strange Rear Axle Housings

Strange offers their rear axle housings in a variety of configurations, from just the center housing to complete, ready-to-bolt-in assemblies. The axle housings are designed and manufactured to be more rigid and stronger than OEM housings. Depending on the application, they're fabricated from proprietary nodular iron (substantially stronger than cast iron) and other quality materials—then fixture-welded to ensure proper alignment; slotted for full tube engagement; and reinforced at critical areas to reduce center section and axle tube flex. Whether your car is headed for the street, the track, or the drag strip, customize the rear-end with a Strange rear axle housing so it will meet or exceed your expectations.

Not Yet Reviewed

$334.99

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$794.99

Summit Bucks

Sonnax Adjustable Rear Servo Pin Kits

The Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and '95-earlier 4L80-E servo pins. OE pins have seven different lengths to allow for adjustment of the Low/Reverse band—but are no longer available from GM. The Sonnax pin kit has an adjustment range that covers the five longest OE pins to allow for accurate setting of the Low/Reverse servo piston travel. The pin features an O-ring groove to prevent leakage of line pressure past the case pin bore. Kit contents: * Servo Pin * Screw * (4) Small washers * (1) Large washer * (2) O-Rings

3.0 out of 5 stars ( 2 )

$33.17

Summit Racing™ 9 in. Ford Grand National Rear-End Assemblies

Summit Racing™ 9 in. Ford Grand National rear-end assemblies are a good choice for your Circle Track race car. Offering quality-built performance at competitive pricing, our Summit Racing™ rear-end assemblies will keep you circling with the big boys without empting your wallet. These full-floating 9 in. Ford Grand National assemblies offer safety on the track and are delivered with a floater housing, lightweight hubs, rotors, solid axles built from 8620 heat-treated steel, bearing seals, rotor bolts, and lug nuts. Assemblies come with new stamped centers manufactured in the USA and are available with 28 or 31-spline solid axles. Axle tubes are turned for the easy installation of birdcages and suspension mounts. And, just like the big boys, the axle caps are red and etched with the Summit Racing™ logo. Do you need a little more grip in the corners? Or, maybe you got a little too chummy with the wall? No matter the reason, you've chosen wisely--Summit Racing™ 9 in. Ford Grand National rear-end assemblies.

5.0 out of 5 stars ( 1 )

$1,593.97

WEHRS Tranny And Rear End Breather Fittings

Designed by WEHR Machining, these aluminum differential vents have an AN stem and nut to install easily into the existing differential or other gear-housing vent holes. They accept a 1/2 in. filter element.

5.0 out of 5 stars ( 1 )

$25.99

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$35.99

Trail-Gear Rear Axle Bearing Pockets

Trail-Gear rear axle bearing pockets are designed to fit most Toyota pickup and 4Runners' axles. They are made of 4340 chromoly and allow you to use rear Toyota or Samurai Rock Assault axle housings with an aftermarket disc brake kit. No other aftermarket parts or kits are required. No longer do you have to worry about finding a spare set of bearing pockets from another rear axle. Now, you can build a completely new axle with no used parts with these Trail-Gear rear axle bearing pockets!

3.0 out of 5 stars ( 1 )

$59.99

Artec Industries 14-Bolt Rear Apex Short Axle Trusses

Artec Industries patent pending 14-bolt rear Apex short axle trusses feature a stronger design, lighter weight and are much easier to install. The key feature that sets them apart from the other brands is their unique peaked-shape top which provides extra rigidity to the whole truss, while allowing both a reduction in weight (vs. using a thicker material top) and eliminating long weld seams. Previous truss versions with long weld seams can lead to extra weld warping of the axle, longer install times and can be inconsistent. Without long seams to weld, the 14-bolt rear Apex short axle trusses can be dropped directly on to the axle, and then these trusses can be welded to the axle faster. Additional part features: * Designed using 3-D models directly from Ford and Jeep for an amazing fit and clearance with surrounding components * CNC precision-cut in-house from 3/16 in. mild steel for a lightweight yet strong solution * Patent pending Apex peaked top design provides more rigidity than a flat top truss design * CNC precision bent in-house for a great fitment * Installation is simple; literally drop the truss in place on the axle and it's ready to weld, no puzzle piece assembling * 70 percent less welding needed than previous truss designs mean less warping, faster turnaround, and lower costs * All long seams are bent so you don't need to spend time welding them together * Dimpled holes provide not only weight reduction but rigidity and strength * Contours both the cast steel differential and can be welded with normal MIG welder and moderate pre-heating and post-heating * Truss is low-profile allowing link joints to be mounted with ideal geometry—about 9 in. from the axle centerline * Truss is designed to fit in between leaf springs or can be used as a base for mounting link suspension mounts * 2-piece design means smaller packaging and less shipping costs along with easy installation Important note: Requires general welding and fabrication skills. Welding should only be done by a competent welder. Artec Industries implies no guarantees or warranties and is not liable for improper installation. Some grinding and fitment may be required when installing this item. Every axle varies slightly, and some fabrication may be required.

5.0 out of 5 stars ( 1 )

$219.99

FTI Performance TH400 Rear Case Bearings

FTI Performance offers a variety of automatic transmission bearings—including these TH400 rear case bearings. Order the high-quality replacement designed for your application.

Not Yet Reviewed

$19.99

Summit Bucks

Sonnax Rear Stator Support Bushings

OE rear stator support bushings have a tendency to wear-out prematurely due to sub-optimal material composition. This wear can lead to bushing failure, loss of correct pressure to the E-clutch, and gear ratio or solenoid codes. Sonnax rear stator support bushings have an upgraded material composition to restore worry-free operation, superior wear characteristics, and eliminate premature deterioration.

5.0 out of 5 stars ( 2 )

$7.95

Artec Industries JK Rear Axle Trusses

Artec Industries JK rear axle trusses are designed to take serious abuse and reinforce your axle, while also providing a flat surface to mount your upper control arms in a 4-link setup. The 10-gauge, 1/4 in. mild steel truss tops incorporate a unique design to strengthen the axle—and provide a low-profile mounting height/surface for an aftermarket 3-link suspension system, if desired. Precision CNC-cut and bent for great fitment, Artec Industries JK rear axle trusses span the entire length between spring buckets. They're reinforced using interlocked 10-gauge thick dimpled gussets for maximum strength and easy assembly.

Not Yet Reviewed

$121.79

Summit Bucks

Sonnax Rear Sun Gear Kits

Stop worrying about input shaft failure when running the GM Powerglide in the most extreme applications. Sonnax offers the only big input shaft upgrade with custom components designed to work together for reliable performance. Whether you have an existing assembly or start from scratch in the gear ratio of your choice, it's the best way to connect huge power to Sonnax Extreme planetaries for great run after run with minimum downtime. Additional details: * Choose from 1.69 or 1.80 ratio big shaft rear Sun Gear kits * Gear prepped to accept big input shaft's fine-tooth rear spline * Custom, PTFE-coated thrust washer replaces sun gear thrust bearing

Not Yet Reviewed

$521.89

Summit Bucks

Sonnax Rear Reaction Carrier Support Shims

Properly reducing your transmission endplay to avoid flare, slip, or both requires the use of shims. Sonnax rear reaction carrier support shims are available in a variety of sizes for multiple interior locations to provide you with the ability to reduce rear unit endplay. Tighten things up to proper specifications with the set of Sonnax rear reaction carrier support shims recommended for your transmission application.

Not Yet Reviewed

$7.61

Richmond Gear Billet Rear Bearing Midplates

Richmond Gear billet rear bearing midplates are incredibly accurate. These heavy-duty replacement parts for your manual transmission are machined from 6061 T-6 aluminum. They're a great upgrade from your stock diecast plate. Order the model recommended for your transmission application.

5.0 out of 5 stars ( 2 )

$203.99

Alloy USA OEM Replacement Rear Axles

Alloy USA OEM replacement rear axles are manufactured from quality materials for maximum reliability. They're designed to fit in the stock location, so no modifications are required for installation. These bolt-in shafts are available to replace more than a dozen axle models from GM, Ford, Dana, Chrysler, and AMC. Order the replacements needed for your car, truck, or SUV vehicle and engine application.

4.35 out of 5 stars ( 23 )

$134.99

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$195.99

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