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.
American Powertrain ProFit Tremec TKX manual transmissions and installation kits put the power to the pavement with unmatched durability and versatility. Tremec has normally sourced their aftermarket transmissions from the OE side, such as the Magnum T-56 and the T-5, but this new design is made from the ground up as a strictly aftermarket transmission. Designed to fit classic muscle cars and customs, the TKX has a tighter, more streamlined case, and features 600 lbs.-ft. of torque capacity and are capable of engines speeds of 8,000 rpm with shifts at 7,500 rpm. The compact design provides clearance in most transmission tunnels without floor modifications, while case strength has increased from previous models with the new 3-piece aluminum housing and gaskets at all flanges simplifies installation and eliminates fluid leaks. Additional features include: * Designed with your specific vehicle application in mind * Available with multiple gear ratio configurations for compatibility for multiple applications with three shifter locations * Multi-cone synchronizers and synchronizer rings are made of sintered bronze and carbon for superior shifts * All gears are supported by caged needle bearings to reduce end play * Gears and shafts are made from ASTM 4615 grade steel and provide increased torque carrying capacity * TKX manual transmissions have 31-spline output shafts for added strength, built-in reverse light switches, and cruise control safety switches * The TKX also has separate GM and Ford case patterns and input configurations—with integrated GM and Ford transmission mount patterns * Installation kits include a driveshaft slip yoke made from cryogenically hardened steel, a polyurethane transmission mount, a steel roller pilot bearing, and a reverse light wiring harness
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$4,095.95
Ford Performance Parts axle bearings are the way to go for durability and performance. Manufactured to strict tolerances, these high-quality steel bearings are an ideal choice when rebuilding your axle. They are available for a variety of applications, including independent rear suspension hubs. Some kits include bearing seals.
( 27 )
$46.99
TransGo valve body repair kits give you the components needed to restore proper shifts and correct other problems with your automatic transmission. They will help correct cold rough shifts, downshift problems, long shifts, hard or soft shifts and lockup problems. Repair your automatic transmission with TransGo valve body repair kits.
( 8 )
$68.67
Clearance
Unplugged Performance limited slip differentials provide a direct drop-in replacement for the stock Tesla Model 3 and Model Y open differentials. These LSDs improve the efficient distribution of power between wheels without using the brakes and stability control software. They help put more power to the ground without slowing the vehicle unnecessarily in conditions where one or more wheels lose traction, such as high G-force cornering, off-roading, and driving in inclement conditions like snow and ice. Tested and validated on the Pikes Peak Race Car with testing by Randy Pobst, Unplugged Performance limited slip differentials redistribute torque automatically to the wheel with the most traction! More product features and notes: * Gear-based design ensures smooth and silent operation without maintenance * Maximizes traction and reduces stability control interventions * Designed for performance driving—essentially no benefit for a daily driver or commuter use
Not Yet Reviewed
$2,194.99
$1,646.50
Factory driveshafts are made from a smaller tube (there are 2 different types) and will flex and bend during hard acceleration, causing the rubber drives to wear out prematurely. The Driveshaft Shop torque tube driveshafts are made from 3 x .125 wall 6061 T-6 aluminum and uses The Driveshaft's own custom machined ends. This ensures that the shaft will not distort or break like the factory units, and offer units rated up to 1000 hp. Choose the driveshaft designed for your vehicle.
( 3 )
$974.48
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$1,916.01
On Sale
B&M NAG-1 locking transmission dipsticks are designed to allow for a quick and easy check of the automatic transmission fluid level and quality by the vehicle owner, without having to go to the dealership. They're constructed of billet steel and black mil-spec anodized aluminum 6061-T6. The dipsticks allow for both cold and warm fluid level checks and are meant to be left in the vehicle and locked into place. B&M NAG-1 locking transmission dipsticks feature an engraved B&M logo, a locking knurled handle cap, and a temperature range engraved indicator end.
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$123.95
$111.55
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$131.95
Stock clutches are made for stock horsepower. Mantic Clutch USA 9000 Series twin disc clutch kits are direct replacement upgrades that can handle 1,010 lb.-ft. of torque capacity at the crank and roughly up to 820 to 850 lb.-ft. at the wheels (capacity will vary with use and type of power adder being utilized). Engineered for serious performance builds, Mantic 9000 clutch kits are the proven answer to transfer all power to the ground and driving your vehicle with a Mantic Twin is easy, pedal effort remains relatively low, with approximately 12 to 15 percent increase over the OE clutch pedal feel. Available for many applications, Mantic Clutch 9000 Series twin disc clutch kits with their ceremetallic friction material and all billet construction make them the best for severe duty yet street friendly. Features and benefits: * SFI approved 1.1 * All billet construction * No Flex at high rpms * High-torque capacity * Lightened flywheel revs quicker compared to heavier OE flywheels * Completely rebuildable—modular construction makes service easy * 9 in. twin disc clutches reduce Moment of Inertia (MOI) for quicker more precise shifts * Ceremetalic friction material offers more heat resistance * OE hydraulic release bearing * All necessary hardware * Cover and components machined from billet stock adding strength and durability
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$2,586.00
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$2,695.00
Clearance
Zoom MU Series clutches are OEM replacement clutch kits that provide more grip without the stiff pedal of most aftermarket clutches. Matched components are engineered to perform together correctly for maximum durability and performance. Select the model for your application needs. Features: * New OEM computer-tested pressure plate * OEM-style clutch disc with non-asbestos facings built to exceed the OEM specs * New release bearing on some applications * Pilot bearing/bushing * Alignment tool for the perfect clutch installation
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$150.99
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$274.99
Zumbrota remanufactured manual transmissions are some of the most dependable 5-speed, 6-speed, and transaxle units available. Each transmission is put through tremendous testing and inspections to assure the highest quality possible to use in your vehicle. Benefits of Zumbrota remanufactured manual transmissions include: * A pre-inspection is done to ensure the unit is free of case cracks, excessive wear and to catch other OEM related problems that many cores have * A second inspection is conducted during the remanufacturing process to ensure all component parts meet OEM specifications * A final post-build inspection is done to ensure unit is built to their strict standards * All units are quality inspected throughout the remanufacturing process to maintain our quality standard * All housing and top covers are cleaned utilizing their state-of-the-art hydro-blasting and rinsing process--this brings all cases back to the OEM finish * 100 percent inspection of internal parts, including gear wear checks, main shaft straightness test and synchronizer testing * 100 percent replacement of seals, bearings, and other common wear components * Units are shipped in high-density plastic totes to help eliminate in-transit damage * All transfer cases are sold with a standard 2 year/unlimited mileage warranty
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$2,495.99
Gennie Shifter understands that you want a continuing theme with related parts that match. When running an automatic transmission, a kickdown cable is often necessary for the transmission to down shift properly when the throttle is opened. All Gennie Shifter kickdown cables are built to complement their throttle cable kits, and they offer a variety of kits that are perfect for many hot rod builds and restorations. Available with black or braided stainless steel housings, they include high-quality stainless steel inner cables. Gennie Shifter kickdown cables feature built-in quality, precision CNC-machining, and factory-like specifications with a snug O-ring fit. Order the model recommended for your transmission application.
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$74.95
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$80.95
When you order a Lokar shifter, you know you're buying quality. These Lokar case-mount automatic transmission shifters are built to deliver outstanding performance and safety with their patented Safety Lock-Out button. The button prevents accidental shifting from park into reverse, drive, and low gears. Other important features include: * Neutral safety switch * Completely adjustable mounting bracket that allows for a wide range of installation positions * Available in a variety of styles and finishes
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$572.95
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$593.95
Motive Gear offers manual transmission input shafts for a wide range of vehicles from the 1980s and up. These replacements are precision-machined from hardened steel to provide the utmost in strength and performance. Connect with the power of Motive Gear—order the input shaft designed to work with your transmission application.
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$68.99
Machined from the finest materials, Moser Engineering axle bearings are designed to protect your axles from wear and tear. They're available in a variety of diameters for fitment on nearly two dozen axle models. Choose the style and quantity needed for your vehicle application. With Moser, you can be sure that you're getting a quality product made to the highest standards.
( 197 )
$49.00
There are many types and styles of transmission bearings and SKF has them all. Their manual transmission bearings are offered in tapered roller, ball bearing, cylindrical roller, thrust needle, and more to cover applications requiring low frictional resistance, high-speed capabilities, smooth/quiet operation, or for application where space is at a premium. SKF Bearings manual transmission bearings are designed and manufactured to the highest quality standards ensuring long service life and safety.
Not Yet Reviewed
$42.99
Transfer power into motion with ACT Xtreme twin-disc clutch kits. Available for street and race use, these clutch kits feature twice the number of disc surfaces for better wear, heat capacity, and long life compared to single disc kits. They offer a proprietary Positive Lift Floater System design, which results in quiet operation with no floater rattle and no posts to wear. Maximize your street and track performance with the solid quality and exceptional value of ACT Xtreme twin-disc clutch kits. More product features include: * CNC-machined and dynamically balanced flywheel ensures trouble-free installation and operation * 40 to 120 percent pressure plate clamp load increase * Pedal feel is stiff to moderate * Recommended disc: Street/Race
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$1,928.00
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$1,932.00
Mantic Clutch USA offers 9000 Series triple-disc clutch and flywheel kits for a wide range of vehicles—including muscle and sports cars like Corvette, Camaro, Mustang, Challenger, Viper, and more. These ultimate combos include everything needed to replace your worn-out clutch, including a matched lightweight flywheel. They're perfect for any supercharger, nitrous, N/A or turbo car that needs a durable rebuildable clutch. If a single or twin disc won't handle the power, Mantic triple disc is the big boy upgrade for big power cars. Order the kit recommended for your vehicle. Product features: * SFI-approved 1.1 * All-billet construction * No flex at high-RPM * Light pedal feel * High torque capacity * All-in-one complete kit * Lightened aluminum flywheel * Completely rebuildable * 1515 torque capacity at crank * 1250-1285 torque capacity at wheels * NOTE: Capacity will vary with use and type of power-adder being utilized Complete kits include: * Lightened aluminum flywheel (12 lbs.) * Triple disc clutches * Billet intermediate plates * Ceremetalic friction material * New OE hydraulic release bearing * New flywheel and clutch bolts * Install hardware * Aluminum carrying case * Detailed instructions
Not Yet Reviewed
$3,295.00
ACT Mod-Twin 225 heavy-duty twin-disc street clutch kits are designed to tackle aggressive launches and rapid shifting of high powered AWD's—by combining twice the organic friction surfaces with a no-nonsense solid mono-drive hub in a completely modular design. Each diaphragm spring endures an exclusive 4-stage heat treating process to provide a more consistent light pedal feel. The puck-style friction plates, with high-quality organic materials, deliver high friction coefficient, superior heat capacity, and long clutch life. These friction plates uniformly transfer torque to a mono-drive chromoly hub, which is heat-treated for strength and durability, extending input shaft life with one continuous spline. The lightweight, rigid design allows for quicker shifts and trouble-free service. Clutch kits are available in different styles and other options for fitment on countless vehicles from the early 2000s and up. Features and benefits: * Recommended for drag, road, or rally racing use * Predictable aggressive engagement, light pedal effort, smooth shifting, possible start-off judder with OE to mild transmission gear noise * Forged aluminum cover, mono-drive hub, exclusive diaphragm, premium friction materials, and hardened wear points ensure this long-life twin performs and survives under the most demanding conditions * Delivers maximum performance and high heat tolerance by combining robust design, strategic features, choice materials, and close tolerances * 100 percent clamp load tested, balanced, and SFI certified Kit contents: * Forged aluminum pressure-plate cover * CNC-machined and dynamically balanced flywheel * Diaphragm spring and face * Puck-style organic friction plates * Available with sprung or unsprung mono-drive hub assembly * Floater * Patented mono-Loc collar * Release bearing * Alignment tool and pilot bearing (if needed) Note: Mod-Twin clutches are fully rebuildable and most components can also be ordered separately, if you do not need to purchase complete kit.
Not Yet Reviewed
$1,951.00
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$2,106.00
On Sale
McLeod Super StreetPro clutch kits are great Street/Strip performance clutches—perfect for use with moderate engine modifications, including intake and exhaust upgrades, camshaft and cylinder head work, and engine management programming. Super StreetPro kits provide a heavier pedal effort than stock, along with improved holding capacity, making these excellent high performance replacement clutches. Additional features and benefits include: * SFI-approved assembly * Handle up to 500 hp * Dual-faced organic and ceramic disc for smooth engagement with exceptional holding capacity
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$355.00
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$365.00
$319.50
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$328.50
On Sale
McLeod StreetPro clutch kits are excellent performance clutches for street enthusiasts. StreetPros are ideal for use with basic engine modifications, including cold-air intakes, exhaust upgrades, and engine management programming. These McLeod kits provide slightly heavier pedal effort with increased holding capacity, making them excellent factory replacement performance clutches. Order the size to match your vehicle specifications. Additional features and benefits include: * Bolt to stock flywheels * Handle up to 400 hp * Organic disc facing for smooth engagement with excellent release qualities
( 162 )
$295.00
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$325.00
$265.50
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$292.50
On Sale
The industry standard for over 30 years, Hurst Competition/Plus shifters offer state-of-the-art control for popular 4-, 5-, and 6-speed manual transmissions. Dedicated applications ensure a custom fit on a wide variety of vehicles with factory consoles without any floor pan modifications. Other features include race track-proven design and reliability, adjustable gear stops to prevent over shifting and prolong transmission life, and an easy-to-follow installation guide.
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$599.95
$538.95
On Sale
If you're into aggressive street driving and occasional track driving, McLeod Street Extreme clutch kits hold up to 700 lbs.-ft. of torque with street tires and moderate engine mods. These SFI-approved packages are the perfect upgrade for high-horsepower Mustangs (and other cars) that need reliable shifting on the street and the track. They feature a dual-faced ceramic friction disc, high clamp load pressure plate, pilot tool, throwout bearing, and pressure plate bolts (where applicable). You can run your pony with complete peace of mind. Street-friendly and track-proven, a McLeod Street Extreme clutch kit is your best decision. Order the model recommended for your application.
( 48 )
$425.00
$382.50
On Sale
McLeod Non-SFI aluminum bellhousings are the gold standard when it comes to accuracy and compact performance. These Non- SFI rated version is for those customers looking for a light weight bellhousing, but not concerned with a SFI rating so these units do not come with a steel block plate.
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$185.00
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$295.00
$166.50
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$265.50
RAM hydraulic release bearings offer maximum flexibility when setting up the clutch release system in your early or late model car or truck. RAM heavy-duty hydraulic bearings use larger, more robust O-rings, providing the ultimate in durability and long life when compared to factory and other aftermarket hydraulic systems. RAM hydraulic bearings are fully adjustable and are easy to set up with most aftermarket clutches, single or dual disc. RAM hydraulic bearings are also a great choice for use in your Tremec transmission conversion. Application specific bearing kits include every fitting, line, shim and adapter needed to connect directly to the factory master cylinder. RAM also offers other bearing styles with a wider 3.150 in. bearing face needed for 3 and 6 lever clutch applications. When only the best will do, choose RAM!
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$199.00
On Sale
For the ultimate in performance, feel, and dependability, mount your Street Super shifter with the appropriate Hurst installation kit. The shifters mount high on the transmission allowing the shift arms to be almost completely straight for added strength and leverage when racing. Hurst Street Super shifter installation kits include the necessary mounting plate, shift arms, hardened steel shift linkage rods, rod adjusting buttons, nylon bushings, spring clips, necessary hardware, and instructions.
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$318.95
$287.05
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