Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Transmission & Drivetrain
Availability
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.
Showing In Stock Items. Show All 66 Items.
Rugged Ridge Heavy-Duty Clutch Link Kits
Rugged Ridge heavy-duty clutch link kits replace the factory-style L-bracket with a retainer clip clutch rod with an upgraded spherical rod design. They allow for full clutch engagement during heavy body and frame flex situations while off-road, whereas the factory design has tendencies to bind, not allowing you to get into gear. These heavy-duty clutch link kits can also be used with up to 3 in. body lifted vehicles, replacing the shorter factory clutch rod.
( 5 )
$144.99
Rugged Ridge Manual Locking Hubs
Rugged Ridge manual locking hubs are crafted from impact-resistant nodular iron and feature a corrosion-resistant die-cast aluminum cap. They provide better 4WD performance when locked (and improved fuel economy in 2WD when unlocked) than automatic hubs. These hubs don't have the slippage or partial engagement/disengagement issues that plague automatic hubs. They're durable, easy to install, and cost-effective! Order the pair of Rugged Ridge manual locking hubs designed to fit your application.
( 109 )
$199.99
—
$309.99
Rugged Ridge Transfer Case Slip Yoke Eliminator Kits
These transfer case slip yoke eliminator kits from Rugged Ridge are a must if you have installed a 2 in. or taller suspension in your 1987-2006 Jeep Wrangler. The kits' purpose is to replace the slip yoke portion of the NP231 transfer case with a fixed yoke to allow for the use of a CV-style driveshaft assembly. These slip yoke eliminator kits eliminate the need to drop the transfer case in order to avoid the drivetrain vibrations caused by taller suspension lifts. The components in these kits include a reinforced aluminum housing and improved oiling channels, making them the most complete and strongest kits available for your Jeep.
Not Yet Reviewed
$399.99
Rugged Ridge Transfer Case Mega Slip Yoke Eliminator Kits
These Rugged Ridge transfer case Mega slip yoke eliminator kits are designed to be used in the same lift applications as the other standard SYE kits. The main advantage to these kits is that they allow for a much longer driveshaft to be used--an additional 3 in. This reduces driveshaft angle, improves bearing and U-joint life, and reduces driveline vibrations. They also have a shorter and stronger main shaft design with improved oiling. They will not work with cable-driven speedometers and are not for use on Rubicon models.
Not Yet Reviewed
$599.99
Rugged Ridge Heavy-Duty Differential Covers
These heavy-duty differential covers from Rugged Ridge are designed to protect your differential and all its working parts for as long as you own your vehicle. These indestructible covers have been "44 caliber tested"--if they can take a bullet at point-blank range, then they can handle all of the abuse that the trails have to offer! All mounting hardware and instructions are included for an easy installation.
( 3 )
$239.99
Quadboss Rugged Axle Shafts
Stock shafts don't always hold up to the rigors of the trail. Quadboss rugged axle shafts are as good as or better than OEM parts. Direct replacement chromoly steel axle bars come fully assembled with three percent moly grease and are ready to install with stainless steel clamps. Nearly 200 models are available for fitment on countless UTV/ATV applications from the 1980s and up. Get your quad back on the trail and off-road with long-lasting quality at an outstanding price. Select the rugged axle shafts recommended for your off-road vehicle.
Not Yet Reviewed
$49.50
—
$274.95
USA Standard Gear Manual Transmission Bearing Kits
USA Standard manual transmission bearing kits include top-quality components to rebuild the bearings in your transmission. They're great for replacing worn out or broken items--even just giving your transmission a quick update, while you're down in the off-season.
( 7 )
$203.99
Ford Performance Parts Differential Covers
Add some style and durability to your ride with Ford Performance Parts differential covers. Each cover is made of top quality materials and given a rugged powdercoated finish to ensure they stay looking good no matter the conditions. Upgrade your differential cover with Ford Performance Parts.
( 15 )
$249.99
Sonnax Smart-Tech Direct Clutch Drum and Shaft Kits
Failure of the intermediate stub shaft and direct drum are almost inevitable when transmissions are pushed to the limit. To maximize durability and improve clutch capacity in heavy-duty/performance vehicles, Sonnax offers Smart-Tech direct clutch drum and shaft kits, the first upgrade to eliminate every critical weakness. Most failures in these units occur where the direct drum and stub shaft connect. Even other aftermarket upgrades that rely on a heavy-duty shaft will sheer in this area under extreme conditions. Unlike two-piece assemblies, the all-in-one Smart-Tech easily handles the highest horsepower/torque levels. The unique one-piece clutch drum with integrated stub shaft is precision machined from high-strength steel to guarantee there are no splines to strip from the drum or weaken the shaft. The shaft itself is significantly thicker and 2 times stronger than the original. Due to its larger diameter, the integrated shaft must be used with the kit's custom, heavy-duty sun gear. Insufficient holding power is another area where many transmissions fall short, but installing thinner aftermarket steels and backing plates to increase clutch capacity isn't ideal. Those components increase clutch pack flex and heat build-up, making them the primary cause of repeat burn-up. To improve both performance and long-term reliability, the Smart-Tech's custom drum and piston hold an OE backing plate and seven OE frictions for 17 percent more clutch capacity than the six-friction stack-up. Sonnax Smart-Tech direct clutch drum and shaft kits feature: * One-piece design that eliminates weak point where drum splines strip and shafts break * Rugged shaft is 50 percent thicker and twice as strong as OE * Custom drum and piston deliver 17 percent more clutch capacity with optimum protection against burn-up * High-strength drum and shaft are precision-machined from hardened 8620 steel * Unique sun gear is precision-machined from 9310, heat-treated steel
( 1 )
$852.68
—
$895.41
Centerforce Billet Steel Flywheels
Centerforce billet steel flywheels are available for popular import and domestic vehicles, including trucks. They're CAD/CAM-designed and CNC-machined from billet steel for precise, no-hassle, bolt-in installations. No modifications are required in combination with either Centerforce clutches or other clutch assemblies built to OEM specs. These rugged flywheels are SFI-approved, so you know that you can count on them--on the street and on the track.
( 62 )
$329.95
—
$608.95
RAM Billet Aluminum Flywheels
If you're building an all-out competition car, then you need a lightweight flywheel that will allow the engine to rev quicker and not eat up a lot of power. RAM billet aluminum flywheels greatly reduce rotating weight to permit quicker revving and higher power output, but still retain enough mass to resist heat distortion that could adversely affect clutch performance. RAM billet aluminum flywheels are made in America and produced in house. All RAM flywheels are computer-balanced within a 1/2 oz., surface ground (which results an optimum mating surface), and are ready to run out of the box. SFI-approved, these flywheels are CNC-machined from certified materials and have rugged steel friction-surface inserts. RAM's billet aluminum flywheels feature a 1/4 in. thick friction insert to dissipate heat away without distortion. Technical note: As it spins, a heavy flywheel stores more energy than a lighter one. Engine and gearing combinations that require more power or inertia to make the car launch without bogging the motor need heavier flywheels. However, heavier flywheels accelerate slower. Lighter flywheels create less inertia at launch, but accelerate quicker through the gears. To effectively use a lighter flywheel, you must consider the car's weight, operating rpm of the engine, and, most importantly, the gearing. Too little gear will cause the engine to 'bog' on launch.
( 31 )
$339.00
—
$519.00
J.W. Performance Ultra-Bell Bellhousings
Using the latest technology, J.W. Performance has come up with these Ultra-Bell bellhousings. Built rugged and certified, these flexplate shields allow for special motor and transmission combinations to be easily mated together. Manufactured from one-piece cast aluminum, these Ultra-Bells are five times stronger than stock bellhousings, which makes them capable of withstanding even the most severe tire shake and can fit under most stock floorboards. Order the Ultra-Bell bellhousing designed to fit your application.
( 80 )
$469.88
—
$727.54
TCI Outlaw Shifters
TCI Outlaw shifters not only ensure that you will find the right gear when you need it, but also deliver great looks. Constructed of billet aluminum with a pistol grip shifter, they are rugged enough to handle both street and race duty, while complementing the interior of any vehicle. They feature rugged construction and are perfectly suited for competition use, being compliant with NHRA/IHRA-legal reverse lockout regulations. In addition, Outlaw shifters feature a park/neutral safety switch, along with provisions for a reverse light system. A shifter cable and installation hardware are included.
( 88 )
$417.95
—
$565.95
Aisin Free Wheel Hubs
Engineered to exacting OE specifications, Aisin free wheel hubs efficiently transfer and disconnect drivetrain power to the front wheels of part-time 4WD vehicles. Compact in design and durable enough for the toughest terrain, they are manufactured to the highest standards and are always OE-matched. Additional features of Aisin free wheel hubs include: * Withstands the same rugged terrain tests as OE hubs * Robust locking mechanism provides a reliable connection of drivetrain power to the wheels in 4WD mode * Large manual dial allows the user to effortlessly change from 2WD to 4WD and back
( 12 )
$104.99
—
$173.99
Summit Racing™ Motor Mount Bolts
Whether you're dropping in a freshly rebuilt V8, or just replacing worn-out motor mounts, make premium-quality Summit Racing™ motor mount bolts your go-to choice. These hardware sets are available for a range of applications—from small and big block Chevys, to small block Ford Windsors. Each package contains rugged steel hex-head bolts with a protective finish for corrosion resistance, along with a set of flat washers. Install your engine with confidence; it all starts by securing the motor mounts to your engine block with extra-strong specialty bolts from Summit Racing™.
( 11 )
$8.99
Motive Gear Differential Carrier Cases
Motive Gear offers differential carrier cases for thousands of applications from 1955 and up. These replacements feature rugged steel construction and will accept all of your factory internal parts without any modifications. Models are available for countless differential case design types, including Chrysler, Dana, Ford, GM, and Toyota. Keep your wheels turning effectively; order the case and options recommended for your vehicle.
( 24 )
$91.99
—
$589.99
Hays Self-Aligning Throwout Bearings
Designed specifically for installations with clutch to transmission misalignment resulting in noise and vibration, Hays self-aligning throw-out bearings minimize these conditions. Clutch alignment can also vary due to normal wear and tear. Self-aligning bearings with their rugged performance characteristics are also a functional upgrade from standard bearings on older cars, when applicable.
( 4 )
$105.95
Timken Axle Spindle Bearings
Timken provides axle spindle bearings for a broad range of automotive applications. These axle spindle bearings deliver the look, fit, and performance of OE. Each part is designed and engineered to match its OE counterpart and is manufactured with the highest quality steel to the highest quality standards. They are available in a wide range of designs and are custom-tailored to specific applications and operating conditions. The rugged design of these axle spindle bearings provides you with proven performance. Make Timken axle spindle bearings the choice for your replacement needs.
( 13 )
$24.99
—
$31.99
Trail-Gear Wheel Bearing Kits
Trail-Gear specializes in steering, suspension, driveshafts, axles, trail armor, and wheels. Their wheel bearing kits are a part of the outstanding line of off-road parts for your truck, Jeep, or SUV. Each kit services a single side and includes inner and outer bearings, hub gaskets, an inner wheel bearing seal, and a star lockwasher. Rugged terrain can be hard on your bearings; these full-service kits bring all of the necessary parts together for replacement.
( 9 )
$69.99
—
$199.99
Advance Adapters Atlas Twin Stick Cable Shifters
Advance Adapters Atlas twin-stick cable shifters allow for nearly any positioning of your shifter levers. Drivers of rear-engine buggies, or Jeeps with consoles, will have an easier time reaching their shifters, and the rugged cable assembly and shifter mounts will stand up to the brutal punishment of competition rock crawling. Advance Adapters Atlas twin-stick cable shifters come with all the necessary parts including shifters and boots. Choose from universal or long-cable models to match your application.
( 1 )
$385.00
Crown Automotive Differential Case Kits
Crown Automotive stocks differential case kits that will keep your vehicle moving. They feature rugged steel construction and are available in a selection of assemblies with gear sets, or with shims, gaskets, and ring gear bolts—and many other choices in-between. Replace or build your needed power to keep those wheels turning with help from Crown differential case kits.
Not Yet Reviewed
$170.99
—
$1,131.99
FAG USA Wheel Bearings
FAG USA wheel bearings are compact bearing units, manufactured with a defined, preset bearing clearance. The results are rugged design, as well as for-life (no maintenance) lubrication and sealing. They feature angular contact ball bearings for both front and rear wheels, ensuring optimum performance in the most demanding situations. Fischer Aktien-Gesellschaft (FAG) has been around for over 100 years and part of the automotive industry for more than 50 of them. Put your trust in proven manufacturing and components with FAG USA wheel bearings—available for hundreds of applications.
( 3 )
$4.50
—
$226.99
Sonnax Splined Stub and Sleeve Kits
Sonnax splined stub and sleeve kits make it easy to build, balance, and service a rugged performance driveshaft. These high performance, heavy-duty kits have unique features to dramatically raise the torque capacity of the driveshaft while guaranteeing hassle-free assembly. Every yoke/stub shaft and splined sleeve is carefully machined from 6061 T-6 aluminum and matched during manufacturing to deliver the most precise and uniform spline fit available. Sonnax also uses more spline teeth than other aftermarket slip and stubs. You can overcome many driveshaft problems by converting from a 2-piece shaft to a one-piece aluminum build outfitted with a Sonnax slip and stub. From eliminating critical failure points to adding great flexibility in customization, they offer the best way to reliably drive horsepower from the engine and transmission to the differential in today's performance vehicles. Kits may also contain boot and boot clamps. For a strong, lightweight and durable driveline ideal for upgrading muscle cars and adapting powertrains to custom street/strip vehicles, select the Sonnax splined stub and sleeve kit designed for the U-joint and tube diameter ideal for your vehicle.
Not Yet Reviewed
$552.80
Timken Transfer Case Bearings
Timken transfer case bearings are manufactured with the highest quality steel to the highest quality standards. They're available in a wide range of designs and are custom-tailored to specific applications and operating conditions. The rugged design of these transfer case bearings provides you with proven performance.
Not Yet Reviewed
$90.99
