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Born as a local transmission shop, ATI Performance Products forged its reputation as a leading manufacturer of transmission and driveline components on the dragstrip....
Born as a local transmission shop, ATI Performance Products forged its reputation as a leading manufacturer of transmission and driveline components on the dragstrip. ATI transmissions, torque converters, and driveline products are first developed and tested on the dragstrip before making frequent appearances in winners' circles across the country. Summit Racing is your source for the entire ATI product line, including harmonic balancers, flexplates, transmissions, torque converters, shifters, pulley kits, and more. Shop ATI Performance Products at Summit Racing now, then visit the winner's circle later!
Born as a local transmission shop, ATI Performance Products forged its reputation as a leading manufacturer of transmission and driveline components on the dragstrip. ATI transmissions, torque converters, and driveline products are first developed and tested on the dragstrip before making frequent appearances in winners' circles across the country. Summit Racing is your source for the entire ATI product line, including harmonic balancers, flexplates, transmissions, torque converters, shifters, pulley kits, and more. Shop ATI Performance Products at Summit Racing now, then visit the winner's circle later!
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ATI output shafts offer heavy-duty performance for high horsepower. The 300M shafts feature an extended bearing surface and are gundrilled to save weight with no governor or speedometer support. They are available in three lengths for different applications. Big power, lots of weight, giant slicks, and a numerically low rear gear signals the necessity for ATI output shafts--they're must-haves for high performance.
( 5 )
$99.00
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$479.00
ATI Performance automatic transmission drums eliminate the need for steel bushings and sleeves that can expand under heat and come loose, ultimately causing transmission failure. They come equipped with Torrington bearings and are designed to triple clutch life and lower ETs.
( 9 )
$231.50
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$1,159.99
Made on state-of-the-art CNC equipment, ATI SFI flexplates are double MIG/TIG-welded with certified American-made materials that far exceed SFI specs for safety. They're manufactured and toleranced from actual OEM drawings to ensure precise fit and location. Each is quality-inspected to exceed the flatness and runout tolerances of the OEM units. They are also precision-balanced on Hines digital equipment with a resolution of 1/10 oz. per inch. Available in dozens of configurations, ATI SFI flexplates can be ordered for fitment on vehicles covering every decade since the mid-1950s.
( 73 )
$213.99
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$229.00
ATI torsional input shafts work like a torsional spring bar--twisting and returning to totally eliminate breakage, while reducing shock loads to the gear train. They are manufactured from top-quality 300M or Vasco for maximum durability. Available for GM Powerglide or TH400 splines, these ATI torsional input shafts will add some reliability to your drivetrain.
( 11 )
$189.95
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$881.99
Sprags--or one-way clutches--are extremely important in GM TH350 and TH400 transmissions because they carry an up-shifting torque load. Prevent transmission failure with sprags and races from ATI Performance Products and compete with increased confidence.
( 5 )
$21.41
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$79.99
Many racers would argue that a Chevy Powerglide transmission, when matched with the proper rear gear, is the quickest and most consistent of all existing transmission designs. ATI Performance adapter kits allow Ford, Chrysler, and import owners to also benefit from GM trannys by eliminating the hours of expensive modifications necessary to mate GM transmissions with non-GM engines. Each of these kits includes an ATI adapter plate, a crank adapter, a flexplate, and all necessary mounting hardware.
( 6 )
$604.44
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$629.50
ATI Super Damper Serpentine Series harmonic balancers are patented and feature grooves for serpentine belts machined into the outer damper shell. The dampers come with six outer grooves for standard OEM drive systems—but eight and 10 grooves are available for supercharger or turbo applications. Serpentine dampers are offered in a variety of diameters, and crank hubs may be fitted with a 6-groove serpentine pulley to drive external oil pumps or vehicle accessories. The Serpentine Series Super Dampers fit all ATI GM-front crank hubs and can be adapted to many engine combinations, providing maximum flexibility. They're available in steel or lightweight, hardcoated aluminum. Features and benefits: * Eliminates torsional crankshaft vibrations * Exceeds SFI 18.1 specs * Black zinc chromate finished * Tunable, rebuildable, and extremely efficient at all rpms * Laser-engraved 360 degree timing marks
( 237 )
$366.00
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$588.80
ATI Compu-Flow reverse manual valve bodies shift opposite of the OEM units, away from neutral when up-shifting (P-R-N-1-2-3). There is no automatic shifting. They will remain in the selected gear, allowing street-driven cars to move off in 2nd or 3rd gear in slippery conditions. The governor and related components are eliminated, as well as throttle pressure, cables/vacuum lines, and linkages. All units freewheel if you lift in low gear; there is no engine breaking. (Note--all turbo units freewheel in 2nd gear, except #353400 for the T-350.) These valves are not recommended for the Powerglide, since it must pass through low to get to neutral.
( 1 )
$308.99
ATI Performance Products aluminum transmission pans feature extra-capacity for better cooling of your transmission fluid. Their aluminum construction helps dissipate heat, which will also aids in lowering transmission temperatures.
( 16 )
$174.97
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$435.99
ATI steel transmission pans feature the same specs as your stock transmission pan. They are perfect replacements for a damaged pan, at the right price.
( 3 )
$34.99
ATI Performance Products TH400 transmissions offer great performance for 400 c.i.d. or larger big blocks. Modifications and options include: * Fully blueprinted and equipped with high-flow lube circuits, increased torque capacity, and hard chrome oil rings * Sprags replaced with heavy-duty units * Clutch packs are assembled for individual applications * Compu-Flow valve body standard * Special low-gear sets for increased launch capability * Lightweight options available to upgrade the transmission
( 1 )
$6,286.99
ATI offers two different versions of their bolt-on style SFI bellhousings, including ATI SFI Standard bellhousings. The Standard versions bolt onto the face of the pump and the case finish is not as critical. The direct-fit versions indicate on the outside diameter of the pump and require precise machining. When you want the standard-style, choose the ATI SFI Standard bellhousing best suited for your application.
( 20 )
$319.00
ATI 300M intermediate shafts are part of the company's extensive line of automatic transmission input shafts. Grade 300M is a high-strength, low alloy steel. Torsional input shafts work like a torsional spring bar, twisting and returning to totally eliminate breakage while reducing shock loads to the geartrain. The intermediate shafts are designed to fit either the Powerglide or TH400 splines. Order the replacement recommended for your application.
Not Yet Reviewed
$269.00
ATI Super Pump front pumps are CNC-machined from billet aluminum or permanent-mold aluminum castings for precision and durability. Re-engineered lubrication circuits allow for increased flow volume in all critical areas. ATI increased the thickness of the pumps to improve oil pressure and volume at low rpm, resulting in a cooler-running transmission and converter. Features: * Superior pressure * Improved trans-brake hold * Prevents stator tube spinout
( 4 )
$331.99
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$1,092.99
ATI heavy-duty Vasco intermediate shafts are manufactured from Vasco Max C300 steel and available for a variety of transmissions. This material is exceptionally strong and resilient, allowing these intermediate/main shafts to withstand the most severe torsional shock. Some shafts feature a solid design (for center lube transmissions only) with no lube holes to help eliminate premature fractures. Order the ATI heavy-duty Vasco intermediate shafts best suited for your application.
( 3 )
$339.85
ATI's Wicked Quick valve bodies are a direct replacement for your original valve body. These valve bodies shift ultra fast and incorporate an adjustable pressure regulator. Fully 5-axis CNC-machined from billet aluminum, these valve bodies will help your project shed some weight. ATI Wicked Quick valve bodies provide a firm, clean shift. Order the model recommended for your year/make and transmission application.
( 1 )
$708.99
When you are doing an overhaul you will want to replace brittle, aged front pump seals with new ones from ATI. Their rubber seals will provide leak-free service and keep your transmission oil where it can do the most good. Maintain your transmission front pump with seals from ATI Performance Products.
( 23 )
$6.43
ATI offers a wide variety of automatic transmission rebuild components to restore or upgrade the response of your vehicle. Often, just a small part is needed to correct the problem—or maybe you're performing a complete maintenance overhaul. ATI's inventory includes necessities such as shift kits, bands, clutches, gaskets, shims, filters, and more. These components are tailored for fitment on specific transmission types.
( 3 )
$1.99
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$66.90
These ATI flexplates are designed for Chrysler V8s with ATI adapters to GM Powerglide, TH350, and TH400 transmissions. ATI GM transmission swap flexplates are offered for 6 and 8-bolt crank applications.
( 2 )
$204.00
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$219.99
ATI tailshaft housings are designed to fit both the Dedenbear Superglide and the stock GM Powerglide transmissions. They're 5x stronger than stock, include a roller bearing at the end of the tailshaft, and require a specific yoke (sold separately).
( 9 )
$207.99
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$208.00
ATI aluminum TH400 SuperCases feature SFI certification and a bellhousing. Developed to eliminate all weak points found in the original TH400 case, the rugged SuperCases and bellhousings are SFI-approved for competition. In addition, the SuperCases have a removable bellhousing that bolts directly to the case instead of using the pump bolt locations. They have been engineered to accept all internal TH400 components.
( 1 )
$2,045.99
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$2,413.99
ATI torque converter dust covers will help to ensure that no foreign objects or debris get near your flexplate or torque converter. These heavy-duty plastic replacement covers are available for a variety of transmission models. If your original is rusted, dented, or faulty, easily update your flywheel protection with help from ATI
( 5 )
$24.85
ATI Trick Sticks locking transmission dipsticks are available for a variety of transmissions. These dipsticks prevent pressure from forcing fluid out of the tube and going everywhere. They are required by NHRA cars running 10.99 or quicker.
( 52 )
$52.95
Freshen up your worn-out or damaged automatic transmission with an ATI stock transmission overhaul kit. These quality rebuild kits consist of gaskets, seals, clutches, steels, and other internal transmission components needed when performing a complete transmission rebuild. Designed for street/strip and recreational vehicle applications, the specific parts included vary depending on the type of automatic transmission in your car, truck or RV.
( 6 )
$54.00
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$102.12
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