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.
Showing In Stock Items. Show All 73 Items.
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.
( 72 )
$149.00
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$299.00
ATI flexplates are created from custom-drawn, SFI-spec chromoly steel. They are double MIG/TIG-welded for additional strength and lasting precision, pass after pass. These kits are manufactured and toleranced from OEM drawings to ensure a precise fit and location. The plates are quality-inspected to exceed the flatness and runout tolerances of the OEM units and precision-balanced on Hines digital equipment with a resolution of 1/10 oz./in. These kits include a flexplate, a CNC-machined crank piloted spacer, and crank bolts.
( 2 )
$264.00
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$305.00
Our Summit Racing™ SFI-approved flexplates are built for racing. They're thicker than stock, double-welded with a forged one-piece ring gear. Available in several internally and externally balanced applications. NOT FOR MARINE APPLICATIONS.
( 498 )
$51.99
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$440.99
BluePrint Engines SFI-approved flexplates offer unmatched quality, affordability, and safety. With a SFI rating of 29.1, they're designed specifically for high-rpm, high-horsepower applications. Order the model recommended for your year/make and engine application. When quality counts, use BluePrint Engines flexplates.
( 12 )
$139.95
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$189.95
Pioneer SFI certified flexplates are machined from high-strength 0.130 in. steel that exceeds factory specifications. They feature bolt patterns punched from OEM blueprints to ensure exact fitment and ring gears that are double-welded for maximum reliability and strength. All of the flexplates are fully inspected and use a dichromate finish to resist corrosion. If your application requires an SFI flexplate, order the Pioneer replacement recommended for your year, make, engine and transmission.
( 66 )
$77.99
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$393.99
Engine Works offers SFI-approved flexplates for a wide range of applications from the 1950s and up. These steel replacements are available in one- or two-piece rear main seal styles, internal or external balanced. The flexplates are designed to factory specs to ensure proper fitment and exceptional performance.
Not Yet Reviewed
$62.46
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$74.96
Engine Works offers Pro SFI-approved flexplates for a variety of applications, including many Chevrolet small block and big block engines from the 1950s,'60s, '70s, and '80s. These 2-piece replacements are ideal for racing, thicker than stock and double-welded with a forged one-piece ring gear. Precision-machined from premium A36 steel plate material, the SFI 29.1 rated flexplates are much stronger than the factory originals and able to handle high-RPM usage. Order the model recommended for your vehicle.
Not Yet Reviewed
$96.21
On Sale
Hays heavy-duty flexplates for high performance and competition engines are constructed from a thicker-than-stock steel plate. This enables them to withstand the stress of high-stall torque converters and high-rpm engines. While factory stock plates tend to crack around the crankshaft hub when punished under high-torque and rpm conditions, the thicker Hays flexplates can handle the force. These heavy-duty flexplates are supplied with a ring gear that is securely welded in place. All Hays heavy-duty flexplates are zinc-dichromate plated to resist corrosion and SFI-certified under specification 29.1.
( 63 )
$142.95
$92.95
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$349.95
Meziere true billet flexplates are the superior choice for quality and precision. These key engine components are machined to exacting tolerances from 4340 round bar steel. Meziere's proprietary manufacturing process ensures the strongest gear teeth, the least runout, and best longevity on the market. All of the replacement flexplates are certified to at least SFI 29.2, and they're available for fitment on vehicles from 1955 and forward.
( 20 )
$467.68
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$997.91
For serious performance, TCI machined SFI-approved flexplates are a "must have". These .140 in. thick flexplates are constructed of A514 Blanchard ground steel and are SFI 29.1 approved. TCI offers a complete line of Chrysler and Ford flexplates with GM and Ford bolt patterns for use with their adapter plate kits as well as neutral balanced flexplates with 168-tooth and 166-tooth starter rings for Chevy and Pontiac applications. Now you can speed down the track with the confidence of TCI machined SFI-approved flexplates.
( 58 )
$231.95
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$519.95
Whether you need stock, stamped, or heavy-duty, TCI forged flexplates are your performance solution. TCI offers popular Chrysler, Ford, and Chevy applications. Their forged selection for Chrysler includes special counterbalanced flexplates for neutral balance torque converters in cast crank applications that came with a counterbalanced torque converter. For Ford applications, TCI offers OEM-style small block plates built to precise standards with extra-thick welds to retain starter ring gear, and they are precision-balanced. Their Chevy stamped flexplates are built thicker than stock from high-tensile strength materials with extra welding to help retain the starter ring gear, and to withstand the stress of high-rpm engines and high-stall converters. For high performance, buzzing around at high rpm requires the confidence of TCI forged flexplates.
( 268 )
$129.95
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$586.95
Introducing the Black Label Special Edition flexplates—the newest addition to PRW's flexplate lineup that meet the SFI 29.1 specification, which is a significant improvement over the OEM flexplates. The Black Label Special Edition Series flexplates are available for most Chevy, Ford, and Hemi applications. All of these applications conform to all published SFI standards, with the added benefits to the racing and performance builder that is looking for and demands the best in quality and engineering. Choose the model designed for your application needs. Key features: * Exceeds SFI Specification 29.1 * Perfect for road racing and lighter vehicles * Several fitment options for early-to-later model transmission swaps * Compatible with most aftermarket racing and high-performance torque converter bolt patterns
( 4 )
$83.82
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$141.36
PRW Gold Series flexplates are engineered to handle extreme duty applications and designed to endure the punishment of modern high horsepower engines. The 4mm thick centerplate provides a solid foundation for these direct bolt-on drivetrain components. Ring gears are precision double-welded, utilizing robotic machinery and cold-welding processes for added durability. These flexplates are rigorously inspected throughout the manufacturing cycle to ensure you receive the expected quality. They are available in a wide variety of configurations to precisely match your application. Raise the bar on your high performance vehicle with PRW Gold Series flexplates. Order the style recommended for your specific vehicle and engine size. Features and specs: * Designed to fit standard OEM, aftermarket replacement, and high performance torque converters * SFI 29.1 certified * Forged one-piece steel ring gears * 0.035 in. thicker than stock flexplates * Constructed from cold-rolled chromoly steel * Long lasting yellow zinc plated finish
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$55.49
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$129.73
PRW Platinum Series high-inertia flexplates are engineered to handle extreme-duty applications and designed to endure the punishment of modern high-horsepower engines. The 4mm thick centerplate provides a solid foundation for these direct bolt-on drivetrain components. Ring gears are precision welded, utilizing robotic machinery and cold-welding processes for added durability. These flexplates are rigorously inspected throughout the manufacturing cycle to ensure you receive the expected PRW quality. They are available in a wide variety of configurations to precisely match your application. Launch your high performance vehicle harder with PRW Platinum Series high-inertia flexplates. Features and specs: * SFI 29.1 certified * Forged one-piece steel ring gears * 0.035 in. thicker than stock flexplates * Constructed with a solid flat plate of cold-rolled premium steel for improved 60 ft. times * Long-lasting platinum finish that helps prevent rust
( 6 )
$66.13
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$114.15
Scat flexplates make excellent upgrades to your stock design. They feature extra-thick steel that's double-welded to the ring gear for added strength and anodized for corrosion resistance. Scat flexplates will withstand the extreme power and rpm of today's engines and are available in SFI-approved or standard applications.
( 84 )
$74.99
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$96.99
B&M flexplates are tough enough to handle severe applications and are ideal for 6,000+ rpm usage. They have precision-stamped centers and a rust-resistant, gold iridited finish. Some units are SFI-approved and are NHRA/IHRA-legal for all classes.
( 176 )
$169.95
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$230.95
ATI Superplate Flexplates were developed in ATI's tradition of staying ahead of the rampant increases in horsepower that are common in the performance industry today. Superplates are manufactured from a super-strong material to withstand thousands of cycles. They are laser-machined rather than stamped to avoid the heat and stress stamping inflicts. The crank bolt holes are bored in position to exacting tolerances in both size and location on CNC machines. Superplates use the grip length of the crank bolts as dowels to prevent the plate from moving under high-torque conditions. Unlike billet plates that violate the "flex principle" of a flexplate, Superplates flex like OEM plates, absorbing the numerous machining tolerances that exist in our non-exact world. Additional features of ATI Superplate Flexplates include: * Neutral-balanced for use on internally balanced engines * Exceed SFI 29.1 and 29.2 ratings * 90,000 lbs. tensile strength * 80,000 lbs. yield strength * Six or eight crank bolts (varies by application)
( 12 )
$199.00
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$299.00
The Wheel precision-machined flexplates from J.W. Performance feature double-welded, high-quality ring gear and the highest quality steel centers. They are designed to take the punishment of today's high-horsepower revving motors from street to ProMod applications. All of J.W.'s flexplates are SFI-certified and have a replaceable ring gear. They're available in a heavyweight style for quicker launches and more rpm during the shift, or in a lightweight style for faster turbo spool time and improved engine response in street, Circle Track, and road race applications.
( 32 )
$395.12
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$424.97
Boninfante offers Streetflex flexplates for a wide range of applications. The flexplates are produced from specially selected aerospace-grade billet steel—and undergo a proprietary 3-stage heat-treating process. The flexplates are hard-machined to exacting tolerances before Boninfante's in-house stress proofing and finishing process. These internal balanced flexplates are available with one- or 2-piece rear main seals, as well as different tooth counts. Select the Streetflex flexplate recommended for your application.
Not Yet Reviewed
$216.00
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$448.44
PRW Platinum Series high-integrity flexplates are engineered to handle extreme-duty applications and designed to endure the punishment of modern high-horsepower engines. The 4mm thick centerplate provides a solid foundation for these direct bolt-on drivetrain components. Ring gears are precision welded, utilizing robotic machinery and cold-welding processes for added durability. These flexplates are rigorously inspected throughout the manufacturing cycle to ensure you receive the expected PRW quality. They are available in a wide variety of configurations to precisely match your application. Features and specs: * SFI 29.1 certified * Forged one-piece steel ring gears * 0.035 in. thicker than stock flexplates * Constructed from cold-rolled premium steel * Long-lasting platinum finish that helps prevent rust * Lighten for quicker throttle response
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$73.67
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$118.29
Allstar Performance steel flexplates are available for small block and big block Chevy engines. They also offer SFI-approved models for those needing a replacement flexplate to handle the stress of high rpm. The thicker SFI-approved plates are gold iridite plated and have dual converter bolt patterns with ring gears welded on both sides. Whether you prefer stock or upgraded SFI styles, Allstar flexplates are quality replacements for your racer or street muscle car.
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$48.99
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$69.99
The power and torque that modified diesel engines deliver can crack or even shatter the stock flexplate. BD Diesel's Black FleX-Plates are designed to reliably handle 1,500 lbs.-ft. of torque. Featuring twice the material of the stock flexplate, these forged billet steel units are precision-balanced and SFI-approved for use in race-sanctioning bodies. Order the model recommended for your vehicle and engine application.
( 2 )
$444.95
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$597.95
The PRW Black Label Torq'r Series flexplates provide a moderately-priced alternative that exceeds performance of OEM and many aftermarket replacement alternatives. Constructed from cold-rolled premium steel with a long-lasting finish that helps prevent rust, they are thicker than stock, and are available with or without one-piece forged ring gears. They are also lighter for quicker throttle response, and SFI 29.1 approved and compatible with manufacturers specifications, but offer added strength whether used for racing, towing, off-road or other severe duty conditions. The diesel applications conform to SFI standards and include added benefits that performance builders will come to appreciate. Order the model recommended for your specific vehicle and engine size.
Not Yet Reviewed
$206.57
PRW offers Elite Series flexplates for a variety of applications, including many Chevy V8 engines from 1955 and up. They're designed as the highest horsepower-level LS flexplates, rated for 3,500 hp at up to 12,500 rpm. These replacements are machined from premium billet steel and are perfectly suitable for high-revving, forced induction, and nitrous-fed applications for drag racing, Circle Track, and off-road. PRW engineered the design with high-precision balancing, which allows each flexplate to work with greater smoothness and for a longer time. The flexplates are coated with black oxide to protect against corrosion. Racers and enthusiasts: push your engine to the limit without compromising durability! Order the flexplate recommended for your vehicle.
Not Yet Reviewed
$364.45
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$479.95
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