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 381

Moser Engineering Inner Housing Seals

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.

5.0 out of 5 stars ( 9 )

$8.99

Spicer Drivetrain Products Differential Inner Gear Kits

Avoid premature failure with Spicer Drivetrain Products differential inner gear kits. Containing the only parts engineered to meet Dana specifications for strength and durability; these kits have everything you need to rebuild your differential case. Forged for longer life in Dana axles, you'll receive spider gears and side gears with shims, as well as the cross shaft and retainer pin. Choose top performance differential inner gear kits manufactured by a legendary name--Spicer.

4.55 out of 5 stars ( 33 )

$133.99

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$794.99

Trail-Gear Rock Assault Inner Axle Seals

A good seal provides good benefits. Trail-Gear Rock Assault inner axle seals will effectively seal any axle deflection, axle misalignment, or axle runout issues that may occur. They are manufactured from a specially blended, high performance synthetic rubber that is very flexible, allowing them to seal efficiently. These TG seals can be used as replacements with Trail-Gear's Rock Assault 9 in. seal housings, as well as other popular 9 in. seal housings.

1.0 out of 5 stars ( 1 )

$14.99

Yukon Gear & Axle Replacement Inner Dust Shields

Yukon Gear & Axle offers replacement inner dust shields engineered to fit specific applications that will keep the dirt and debris from reaching the critical parts of your axle. Yukon manufactures a full line of top-quality components to complete your differential repair, rebuild, restoration, or upgrade. Order the replacement dust shields recommended for your axle.

Not Yet Reviewed

$9.99

GForce Level 2 Inner Axle Stubs

GForce Level 2 inner axles stubs are direct replacements for factory stub-shafts and are designed for cars with mild bolt-ons to those running superchargers and turbos. Their L2 stubs are meticulously designed, machined, and assembled in-house from billet steel featuring a premium alloy, offering significant strength over stock units. GForce Level 2 stubs are CNC-machined and treated with an aerospace anti-corrosion E-coating for lasting performance.

Not Yet Reviewed

$749.00

Wiseco Inner Clutch Hubs

Wiseco leads the clutch aftermarket with high performance inner hubs. OEM inner hubs are made from inexpensive die-castings that quickly wear out. Wiseco offers the only forged clutch components in the aftermarket for off-road bikes and ATV applications. If you're serious about performance and need new inner clutch hubs, get the best. Get Wiseco.

Not Yet Reviewed

$305.99

Allstar Performance Replacement Inner Seals

Allstar Performance replacement inner seals are made from quality material and help your axles to perform at their top level. If your old seals are starting to wear or maybe you've decided to replace your axles—whatever the reason, these replacements offer the right fit and function, restoring the performance and safety they're designed to provide.

Not Yet Reviewed

$9.99

Hinson Racing Billetproof Inner Hubs

Hinson Racing Billetproof inner hubs are designed to perform in extreme conditions. Hinson Racing components are steeped in two decades of high performance part design experience and crafted with race-proven technology. The winningest clutch components in the world, these components have been race-proven by the best teams worldwide. They are precision-machined from billet T-6 aircraft-quality aluminum to aerospace tolerances, and then hard coated for up to five times the wear resistance compared to stock. Hinson clutch components allow the assembly to spin truer, creating less heat when disengaged and providing a more positive smooth clutch engagement. Ride safe, shift fast, and have confidence in your ride with Hinson Racing Billetproof inner hubs.

Not Yet Reviewed

$319.99

Pro-X Racing Parts Inner Clutch Hubs

Pro-X Racing Parts inner clutch hubs are die-cast alloy parts machined to OE specifications and tolerances. Manufactured by the leading OEM factory in Japan, these hubs are quality, cost-efficient direct replacements for your bike. They work perfectly with Pro-X components, but also work equally well with your factory basket, plates, or other parts. Shift into winning performance with Pro-X Racing inner clutch hubs.

Not Yet Reviewed

$84.99

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$89.99

Longfield Inner Hub Gears

Longfield inner hub gears will keep your rig running problem-free. When you run bigger tires, you put more strain and wear on your axles and hubs, creating more failure points. Made entirely from 4340 chromoly, these gears are so strong they'll handle all the abuse you put them through. Longfield inner hub gears are direct replacements that require no modifications. They offer locking gears for solid axles with the IFS-style, allowing you to use IFS locking hubs on your solid axles. Select the model designed for your vehicle application.

Not Yet Reviewed

$152.15

S&S Cycle Inner Primary Bearing Races

S&S Cycle inner primary bearing races prevent costly damage to the inner primary main shaft seal, output gear and bearing. Available for older and newer Big Twins, S&S bearing races for the newer models have been improved with an extra step on the inside diameter that acts as a stop on the transmission main shaft. When the race is pressed on to the shaft, the step will not allow the race to move inward toward the main shaft seal. S&S bearing races are must-haves for any high performance application. Select the inner primary bearing race designed for your motorcycle.

Not Yet Reviewed

$82.95

Spicer Drivetrain Products Slip Yokes

Age, miles, and abuse take their toll on drivetrain parts, making rebuilds and new parts a necessity. When you're seeking direct replacements for OEM, you need Spicer Drivetrain Products slip yokes. Spicer products are used in the production of many vehicles and are well-respected for quality, innovation, and value. These slip yokes are produced with the same high standards as the originals for reliable service. When rebuilding a transmission, use the parts that made it great. Go with Spicer Drivetrain Products slip yokes.

4.63 out of 5 stars ( 135 )

$60.99

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$687.99

RCV Ultimate CV Axles

RCV Performance Ultimate CV axles simply replace your weak axle shafts with a high-strength design. Tests prove they are twice as strong as OEM shafts, and they're just as tough at a straight angle as they are at extreme angles. Even if you have big tires and big power, there are no worries. Ultimate CV axles are low maintenance and operate with a smoothness you can feel--whether off-road or on the street. And they back it all with a "No Questions Asked" limited lifetime warranty. Available for many vehicles, select the RCV Ultimate axle set designed for truck, SUV, or Jeep.

4.75 out of 5 stars ( 4 )

$879.95

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$1,499.95

Crown Automotive Direct-Fit Axle Shaft Assemblies

If it weren't for axles, the wheels on your vehicle wouldn't be moving anywhere. When those all-important parts twist, break, or have other difficulties, simply replace them with Crown Automotive direct-fit axle shaft assemblies. These assemblies are available for numerous axle types, such as CV-style, C-clip, front inner and outer, and bolt-in. While some replacement axles use hardened 4340 chromoly shafts, most are designed and steel-built to OEM specs for reliability and fitment. Each axle is engineered for its particular location and differential. Crown direct-fit assemblies cover many models of vehicles.

4.46 out of 5 stars ( 97 )

$56.99

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$514.99

Ford Performance Parts 2015-16 Mustang Half Shaft Assemblies

Ford Performance Parts 2015-16 Mustang half shaft assemblies come as original equipment on Mustang GT350s. So whether you are replacing or upgrading, these are the parts you know will fit your Pony. Overview of Ford Mustang half shaft kits: * Fits 2015-17 Mustang GT, 2.3L EcoBoost, and V6 * Original equipment on 2015-17 Mustang GT350 * Increased diameter left side half shaft vs. Mustang GT * Value-priced upgrade for mild drivetrain modifications and naturally aspirated engines * Includes both right and left half shafts

5.0 out of 5 stars ( 6 )

$419.99

Timken Wheel Bearings

Timken wheel bearings are designed to be exact replacements for your OEM wheel bearings. Their steel roller bearing configuration allows for maximum performance without sacrificing durability. Available for a variety of passenger cars, trucks, and SUVs, these Timken wheel bearings will get you back on the road in no time.

4.71 out of 5 stars ( 268 )

$12.99

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$78.99

Timken Wheel Seals

Do you want a better sealing surface? Timken wheel seals offer consistent, leak-proof performance. Manufactured with the same precision as the company's legendary bearings, Timken relies on quality materials and their knowledge of design to provide replacement parts with a longer service life. Most of these wheel bearing seals are chemical- and abrasion-resistant, keeping fluids in and dirt out. Choose a name you know to help with your next auto project—choose Timken wheels seals, available for fitment on thousands of vehicles.

4.62 out of 5 stars ( 193 )

$3.99

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$32.99

Ford Performance Parts Half Shaft Upgrade Axles

A must for your 2015 and later model Mustang—Ford Performance Parts half shaft upgrade axles deliver a robust drivetrain solution to support the higher torque loads of your power-producing muscle car. These better-than-stock performance shafts feature larger diameters, proprietary materials, and CNC-machining—which makes them a stronger and healthier option for your high-powered, sticky-tire-running machine. And with their anti-wheel hop technology, your Mustang will surely put its power to the pavement. Factory half shafts can't handle the additional stresses of your modified ride; for optimum performance, install the Ford Performance Parts half shaft upgrade axles designed for your submodel.

5.0 out of 5 stars ( 2 )

$2,302.99

Allstar Performance Cut-to-Fit Flanged Axles

Custom axles can be an expensive option for racers. Instead, consider Allstar Performance cut-to-fit flanged axles for your street, dragstrip, and Circle Track vehicles. Ideal for Ford 9 in. rear-ends, these carbon steel axle shafts have multiple wheel bolt patterns for 5 on 4 1/2 in., 4 3/4 in., and 5 in. bolt circles, and they're drilled for press-in style studs (sold separately). These axles are available in various lengths, with or without bearings. Select the bolt-in model designed for the best fitment on your application.

4.4 out of 5 stars ( 5 )

$249.99

Yukon Gear & Axle Differential Pinion Yokes

Yukon Gear & Axle differential pinion yokes offer precise fit and strength for many applications. The yokes are manufactured from cast steel, forged steel, billet steel, and aluminum—and are available for fitment on dozens of specific axle applications. Choose the high performance strength of Yukon Gear & Axle differential pinion yokes for your build.

4.51 out of 5 stars ( 87 )

$52.99

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$526.99

Sonnax Slip Yokes

Sonnax slip yokes are forged, not cast, for greater strength, and they undergo a precision-machining process to guarantee exceptional balance and minimal runout. They are 100 percent leak-tested, the seal plug is O.D. ground for superior seal, and yokes are air-tested to 40 psi. Sonnax slip yokes are available in different lengths and tooth counts to fit your specific transmission application.

4.86 out of 5 stars ( 113 )

$224.56

All-Pro Off-Road High-Angle CV Boot Kits

The CV (constant velocity) joints of your Toyota connect the drive shafts to the wheels, ensuring the wheels rotate properly when accelerating or turning corners. Protecting the joints from the elements and damage are boots. They also help keep the joints properly lubricated. All-Pro Off-Road high-angle CV boot kits replace torn deteriorating boots with durable neoprene that is stronger than natural rubber, as well as flexible, weather resistant, and chemical resistant. Available in kits with high-angle outer boots or high-angle outer and inner (OEM) boot replacement, All-Pro's CV boot kits are packaged with the necessary clips, clamps, packets of CV joint grease. Kits are also available with or without crimp pliers. For years of worry-free operation, select an All-Pro Off-Road high-angle CV boot kit designed for your Toyota.

4.4 out of 5 stars ( 5 )

$89.99

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$129.99

Spicer Drivetrain Products End Yokes

Spicer end yokes help to minimize noise and vibration to keep your driveline running smoothly. They're forged from hardened steel, heat-treated to endure tough conditions, and engineered for a precise fit. Spicer end yokes deliver the same quality and reliability you expect from your original equipment parts—because they are OE parts, manufactured to the same standards and specifications as the end yokes that were installed in your vehicle from day one. Order the model designed to fit your application.

4.85 out of 5 stars ( 27 )

$65.99

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$275.99

Crown Automotive Driveshaft Yokes

You're just about to conquer a tough, rocky, tire-dropping section of trail when, "BAM!"—the U-joint grenades and takes out an ear on the yoke. Thankfully, you came prepared with Crown Automotive driveshaft yokes so you can make the repair and keep on riding. These yokes are designed and built to OEM specs for excellent fit and reliable performance. Whether you are hot rodding on the street or on a trail ride, always be prepared with Crown Automotive yokes.

4.48 out of 5 stars ( 31 )

$31.99

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$241.99

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