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When it’s time to upgrade your transmission, turn to the torque transfer pros at American Powertrain! They specialize in Tremec 5- and 6-speed gearboxes and also...
When it’s time to upgrade your transmission, turn to the torque transfer pros at American Powertrain! They specialize in Tremec 5- and 6-speed gearboxes and also build a full line of accessories and installation kits designed to make your next swap go like clockwork. Summit Racing offers American Powertrain transmissions, transmission installation kits, crossmembers, flywheels, clutch pedal assemblies, and more—everything you need to convert your muscle car to modern drivetrain technology. Make the shift to American Powertrain—shop now!
When it’s time to upgrade your transmission, turn to the torque transfer pros at American Powertrain! They specialize in Tremec 5- and 6-speed gearboxes and also build a full line of accessories and installation kits designed to make your next swap go like clockwork. Summit Racing offers American Powertrain transmissions, transmission installation kits, crossmembers, flywheels, clutch pedal assemblies, and more—everything you need to convert your muscle car to modern drivetrain technology. Make the shift to American Powertrain—shop now!
Skip the clunky old mechanical linkage and install American Powertrain Hydramax hydraulic clutch release systems. They easily install in almost any rear-drive vehicle. The patent-pending adjustable master cylinder bracket allows you to mimic any original clutch rod angle, giving you a smooth, modern clutch feel without hacking up your firewall. The systems are designed to work with original and aftermarket pedals and are available for most vintage 4-speeds, along with TREMEC T5, TKO, Richmond, T56, and Magnum 6-speed transmissions. These systems come with the nickel plated firewall mount, volume-matched master cylinder, as well as a reservoir kit, lines, fittings, model-specific pedal mounting hardware, and model specific internal or external slave cylinder.
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$499.50
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$1,195.95
Whether you're installing a traditional 4-speed or a modern 5- or 6-speed, getting the clutch to operate properly is always a big step. With American Powertrain Hydramax hydraulic throwout bearings you can skip the clunky old mechanical linkage. They easily install in almost any rear-drive vehicle. The bearings are designed to work with original and aftermarket pedals, and are available for most vintage 4-speeds, along with TREMEC T-5, TKO, Richmond, T56, and Magnum 6-speed transmissions.
( 14 )
$345.45
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$502.90
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
( 1 )
$3,995.95
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$4,559.95
American Powertrain manual transmission bellhousings are designed to properly mate your transmission to the engine block. They feature all-new CNC-machined aluminum castings for tight tolerances and a precision fit. The bellhousings are available for different engines and transmission styles. Order the model recommended for your application.
( 30 )
$249.95
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$525.00
These American Powertrain ISO-X transmission mounts are manufactured from a highly durable ballistic polymer for maximum performance. They are predrilled and fit perfectly on your transmission and crossmember.
( 11 )
$97.99
American Powertrain's Science Friction flywheels are available for most GM, Ford, Mopar, and AMC V8 engines. Their high-performance billet steel or lightened billet steel flywheels work best on the street for smooth performance—and for drag racing where the flywheel stores energy for hard launches. Billet aluminum flywheels are preferred for high-revving engines and in road racing where rapid rpm gain is essential. More than 50 models and configurations are available; order the flywheel recommended for your engine application. Features include: * High-grade billet steel or aluminum * Heavy-duty ring gears (with welded tabs on aluminum flywheels) * SFI certification is available on every flywheel * 20 percent lightening is available on steel flywheels * Double Blanchard-ground steel friction plates on aluminum flywheels * Aluminum flywheels have aircraft-grade riveted friction plates
( 12 )
$299.95
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$565.95
American Powertrain transmission yokes are designed for use with Tremec TKO or Magnum transmissions. They're made from nodular iron and provide a press fit with 1350 U-joints. So whether you just want to upgrade from your existing unit or need the proper yoke to successfully complete your transmission swap—make sure you order an American Powertrain transmission slip yoke.
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$110.00
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$159.00
American Powertrain Hydramax master cylinder kits are made ready for you to utilize with existing slave or concentric hydraulic bearings. The clutch units are highlighted by a patent-pending Hydramax bracket which mimics the original clutch rod angle for perfect linear actuation. This well-designed component features an integrated pedal stop, 90-degree adjustability, and a durable nickel finish with a low-profile master cylinder. Also included in the kits, you'll find a model-specific pedal push rod kit, flexible reservoir for remote or local mounting, PTFE-lined steel braided line—plus hardware, lines, and fittings. Order the assembly recommended for your vehicle application.
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$359.95
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$489.95
American Powertrain X-Factor crossmembers offer half the weight of traditional crossmembers—with all of the strength. Designed to fit with most muscle car platforms and the latest transmissions, X-Factor aluminum crossmembers are 1,000 hp strong and feature a powdercoat finish for added durability. They're available for a variety of vehicle and transmission applications.
( 32 )
$144.95
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$419.99
Get the clearance and great looks you need with the help of American Powertrains transmission tunnels. Each of the these transmission tunnels is designed for your specific vehicle to ensure a perfect fit with enough clearance for your modern transmission while still looking great. Each transmission tunnel is made using top quality materials to provide the perfect fit and finish to top off your project. Keep the interior of your car or truck looking clean with American Powertrains transmission tunnels.
( 6 )
$65.95
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$289.95
American Powertrain transmission rear seals include a dust seal and are designed for use with all TKO 5-speeds. Keep your transmission fluid off the street/track and in the pan where it rightfully belongs with American Powertrain transmission rear seals.
( 4 )
$38.95
American Powertrain speedometer cable plugs allow you to convert your setup to a screw-on type speedometer cable. These small transmission accessories will fit a wide variety of models. American Powertrain helps to make sure you're running at a safe speed with quality parts.
( 13 )
$27.99
View your correct road speed with American Powertrain speedometer gears. They have several tooth counts available made from durable, high-strength plastic to help calibrate your speed. The clip and O-ring seal are included for installation.
( 44 )
$12.00
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$15.00
American Powertrain reverse lockout modules are safety devices to save your transmission by preventing shifting into reverse on the freeway. These control solenoids communicate with the vehicle speed sensor in the transmission to let them know you are at zero mph so you can safely shift into reverse, rather than using a signal from the brake pedal.
( 3 )
$135.45
Whether you're replacing worn-out speedometer components or updating your system, these American Powertrain adapters allow you to convert your setup to a screw-on type speedometer cable. Make sure you're running at a safe speed with quality parts from American Powertrain.
( 1 )
$119.99
Your standard plastic clutch fluid tank may do the job, but it's susceptible to cracks--not to mention unsightly discoloration. American Powertrain will dress up your under-the-hood look with their billet aluminum master cylinder reservoirs. These upgrade replacements feature a fabulous satin polished finish, and they're ideal for a reservoir swap in your Hydramax kit.
( 6 )
$104.23
American Powertrain bearing retainers provide the perfect starting point to your transmission repair, swap, or other project. They are built from high-strength materials to resist stress and finished for long life and durability. These bearing retainers also come ready to accept hydraulic throwout assemblies to further ease your installation.
( 2 )
$156.45
Get your transmission in gear with one of these American Powertrain White Lightning shifters. They feature a billet aluminum base plate and tower with billet steel center core, plus an independent bias adjustment—an industry exclusive that significantly improves 2-3 shift action and overall shift feel with the simple turn of a screw. Their low-profile design is perfect for increased tunnel clearance, and the short throw action provides for accurate shifts. Dozens of models are available, for universal or transmission-specific applications.
( 9 )
$339.95
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$425.99
American Powertrain bellhousing inspection covers keep road debris out. These strong steel plates help prevent water, mud, rocks, snow, and the like from wreaking havoc on your flywheel and flexplate. The covers are available for a variety of vehicle and transmission applications.
( 14 )
$38.85
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$179.00
American Powertrain offers replacement neutral safety switches to allow your car to be started only in park, increasing safety. Neutral safety switches can fail because of old age, accumulated dirt, corrosion, or damage to the wiring. So long as you don't have to trace a wire to locate the damaged spot, these switches themselves are easy enough to identify and change. For the quality replacement parts you need, you can count on American Powertrain.
Not Yet Reviewed
$28.35
American Powertrain hydraulic clutch lines are ideal replacements/upgrades for worn, damaged, or less robust lines. Featuring female threads, they're manufactured from braided stainless steel to withstand harsh environments. Shift back into a properly working vehicle with an assist from American Powertrain hydraulic clutch lines.
Not Yet Reviewed
$37.99
American Powertrain has introduced a series of billet shift knobs, starting with a gunmetal anodized finish over solid T-6061 billet aluminum—and engraved with the T-5 5-speed or 6-speed pattern. The beautiful round knobs are 2 in. in diameter and have a 3/8 in.-16 thread pattern to fit all American Powertrain shift handles, as well as most aftermarket handles.
( 3 )
$58.95
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$59.99
American Powertrain shifter offset adapters allow you the perfect fit to your application. Whether it's a shorter or longer offset you need to perfectly locate the shifter handle in the right location, American Powertrain steel offset adapter arms will put your shifter exactly where it needs to be for your application.
( 3 )
$31.50
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$139.99
American Powertrain offers Flexfit hats that sport a cool graphic skull design and the company's popular slogan: #savethestick. If you're a Powertrain enthusiast—grab hold of this hat before they sell out!
( 1 )
$25.00
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