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The ideal upgrade for performance vehicles with the GM 6L80 or 6L90 transmission, Sonnax extreme-duty 4-5-6 clutch hub and intermediate shaft guarantees maximum protection against shaft breakage. The unique hub design improves oil flow and accepts Powerglide-style frictions to optimize clutch durability. In place of the 2-piece shaft/hub, Sonnax uses a much stronger, one-piece design that eliminates the OE assembly's weak, welded connection. It is custom forged from ultra-high-strength 300M billet steel, and then heat-treated and shot-peened for added durability. This combination of features guards against broken 4-5-6 hubs and the risk of rear splines shearing off.
Not Yet Reviewed
$1,015.08
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$1,157.55
Summit Bucks
Sonnax heavy-duty intermediate overrun clutch outer races eliminate weak points. Race failure is a chronic problem with high-torque loads causing race fractures at two stress points: the radial lube holes and the sharp inside corners at the base of the outer splines. Sonnax outer races are engineered with offset lube holes so rollers never travel directly over the holes, and they are spaced so only one roller is ever positioned near a hole, radically reducing the risk of fracture. Other design improvements to the splines, plus upgraded material and a custom manufacturing process, further improve durability, doubling the torque capacity over any OE or other aftermarket races. Sonnax heavy-duty intermediate overrun clutch outer races are direct replacements offering unrivaled reliability at any power level.
( 3 )
$101.10
Summit Bucks
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 )
$754.00
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$1,537.27
Summit Bucks
Stop worrying about input shaft failure when running the GM Powerglide in the most extreme applications. Sonnax offers the only big input shaft upgrade with custom components designed to work together for reliable performance. Whether you have an existing assembly or start from scratch in the gear ratio of your choice, it's the best way to connect huge power to Sonnax Extreme planetaries for great run after run with minimum downtime. The only way to prevent twist and breakage from massive torque is to increase the input shaft diameter, and the core of the big shaft system is big input shaft kit 353532-01K. The shaft strikes the perfect balance between strength and ease of installation with a 1 1/8 in. diameter and a unique, high-strength spline that still fits through the front sun gear. It delivers 35 percent more strength than standard 1 in. shafts, a dramatic upgrade for racers that want to take full advantage of the lightweight and efficient Powerglide automatic transmission. (Note: The Sonnax big shaft system for Powerglides requires changing to a 35-spline turbine hub.) Kit contents: * Shaft * Clutch Hub Big Shaft features: * Torsional, ringless design * Heat-treated, 300M steel with advanced processing * 35 splines (AOD-style) at converter Clutch Hub features: * 1.500 in. tall hub for use with 10-clutch setups * High-strength chromoly steel * Custom fit for the big shaft
Not Yet Reviewed
$1,480.72
Summit Bucks
Sonnax adapter flange yokes are an ideal upgrade for modified performance vehicles, allowing an easy conversion from a 2-piece driveline to a one-piece, U-joint-style driveline. The yokes will dramatically increase strength and durability while reducing future maintenance costs. Benefits: * Machined 6061 T-6 aluminum construction * Eliminates the troublesome giubo and/or CV joint(s) * Great for drivetrain swaps and retrofits in custom applications, such as street rods and hot rods
Not Yet Reviewed
$287.66
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$311.37
Summit Bucks
Stop worrying about input shaft failure when running the GM Powerglide in the most extreme applications. Sonnax offers the only big input shaft upgrade with custom components designed to work together for reliable performance. Whether you have an existing assembly or start from scratch in the gear ratio of your choice, it's the best way to connect huge power to Sonnax Extreme planetaries for great run after run with minimum downtime. Additional details: * Choose from 1.69 or 1.80 ratio big shaft rear Sun Gear kits * Gear prepped to accept big input shaft's fine-tooth rear spline * Custom, PTFE-coated thrust washer replaces sun gear thrust bearing
Not Yet Reviewed
$439.47
Summit Bucks
Stop worrying about input shaft failure when running the GM Powerglide in the most extreme applications. Sonnax offers the only big input shaft upgrade with custom components designed to work together for reliable performance. Whether you have an existing assembly or start from scratch in the gear ratio of your choice, it's best way to connect huge power to Sonnax Extreme planetaries for great run after run with minimum downtime. Additional details: * Choose from 1.58 or 1.65 ratio big shaft rear Sun Gear kits * Gear prepped to accept big input shaft's fine-tooth rear spline * Custom, PTFE-coated thrust washer replaces sun gear thrust bearing
Not Yet Reviewed
$439.47
Summit Bucks
No weak link! Sonnax heavy-duty one-piece input shafts are custom-forged from one solid piece of ultra-high-strength 300M steel. Much better than the weak OE 2-piece shaft/hub design, this single piece delivers a more robust build that will work hard longer. With durability and performance features which are second to none; your only choice should be Sonnax heavy-duty one-piece input shafts.
Not Yet Reviewed
$440.14
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$984.25
Summit Bucks
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
$520.53
Summit Bucks
If there's a Powerglide transmission under your hood, chances are you're either a drag racer or restoring a GM car that's been around for a half-century. Sonnax high clutch pistons are direct OEM replacements optimized for those vintage 2-speed applications. Built from 6061 forged aluminum, these pistons won't crack under pressure as some cast versions do. You can also machine these Sonnax pistons to allow for various quantities and thicknesses of clutch steels and frictions. For drivetrain components, trust the award-winning industry leader--an American company that's 100 percent employee-owned. Developing quality solutions for their customers is a daily mission.
Not Yet Reviewed
$73.46
Summit Bucks
Sonnax offers a variety of automatic transmission rebuild components, including Smart-Tech overdrive clutch housing kits. Dodge trucks pulling heavy loads or with boosted power are at high risk for overdrive burnup due to the stock transmission's insufficient clutch capacity and fragile OE clutches. Even small amounts of heat and extra torque will push the thin (.034 in.), single-sided clutches over the edge, distorting the clutch pack. The fact is, any distortion of the clutch pack takes the clearance out of spec and makes overdrive clutch burnup inevitable. This Sonnax kit will keep hardworking trucks on the road! The unique billet aluminum housing increases overdrive apply area by 16 percent and holds a physically taller clutch pack. The 2X thicker steels increase clutch pack steel mass by 28 percent for maximum heat dissipation; and the double-sided BorgWarner clutch frictions are optimized for the 68RFE OD application and are custom-made for the Sonnax kit. This guarantees an unrivaled combination of squawk resistance and maximum clutch capacity for any truck. This groundbreaking kit is the only top-of-the-line upgrade that eliminates clutch problems without relying on valve body/pump modifications or adding the expense of extra components. Details at a glance: * Modified housing holds physically taller clutch pack for 20 percent more clutch capacity * 16 percent more OD apply area for firmer, more controlled shifts * 2X thicker steels and double-sided clutches increase steel mass by 28 percent for maximum heat dissipation * Custom BorgWarner clutches for maximum capacity with state-of-the-art squawk resistance * Bolt-on anchor plate eliminates clutch pack flexing and distortion that contribute to heat build-up * Combine with Sonnax line pressure booster kit RFE-LB1 for even higher levels of performance * Contents: -- Overdrive/reverse housing -- Lip seal -- Adapter sleeve -- UD/OD reaction plate -- Steel clutch plates (5) -- Friction clutch plates (6) [custom BorgWarner] -- Anchor late shims (2) -- Bolt-on anchor plate -- Screws (18)
Not Yet Reviewed
$860.40
Summit Bucks
The ideal GM TH400 upgrade for any power level, Sonnax heavy-duty forward drums (34554-01) feature a unique combination of high-strength, light weight, and a cutting-edge design to optimize transmission performance. Racing applications quickly push the heavy, cast-iron OE drum over its limits, with failure most common at the weak point where the shaft and drum connect. The problem can be addressed with a larger spline and lighter-weight aftermarket aluminum drum—but durability becomes a huge issue with wear of the clutch splines, shaft spline connection, and seal ring bore. To dramatically reduce weight and deliver the ultimate in reliability, the Sonnax high-strength, chromoly steel drum is custom-engineered with several lightening features for a low rotating mass. It weighs 3 lbs. less than the OE drum and is just 3 oz. heavier than a common aluminum drum. Weight is reduced carefully, without compromising strength, by ribbing the front of the drum, adding clutch splines (28 vs. 14) and lightening holes, plus reducing the diameter inner section of the drum at the middle seal ring area. This versatile drum upgrade has an oversized 28-tooth shaft-to-drum spline and can be used with a variety of input shaft styles. This includes Sonnax 1 in. diameter, 30-spline heavy-duty input shaft 30280-02, Sonnax 1 1/8 in. diameter, 35-spline big input shaft 35280-02, and other aftermarket shafts with 28-spline connection between shaft and drum: * Ultra-modern drum delivers both high-strength and light weight for unrivaled performance at any power level * Compatible with Sonnax and other aftermarket 28-spline input shafts * Optimized for use with rubber clutch separators for applications with clean neutral setups * Clutch spline major diameter is reduced slightly, and two sets of full-length clutch splines added to back up clutch separators * Lightening holes correspond to input speed sensor locations in aftermarket cases for more accurate converter and shift data * Middle seal is eliminated—an aluminum clutch volume spacer kit 34554-11K is available separately for applications in which clutch fill/drain time may be a concern * Sonnax high-RPM checkball capsule 57510-01 is installed to eliminate pressure drop at high (5500+) RPM, a common problem with OE and other aftermarket checkballs
Not Yet Reviewed
$358.80
Summit Bucks
ACDelco offers differential clutch kits to help maintain your Chevrolet, Buick, GMC, or Cadillac vehicle. Quality-built, these genuine OE parts meet GM Original Equipment standards and are designed specifically to fit your vehicle. Order the differential clutch kit recommended to fit your specific application.
Not Yet Reviewed
$247.99
Summit Bucks
ACDelco Gold automatic transmission fluid filters can help to ensure the reliability and performance of your automatic transmission. These filters trap impurities that may be present in the fluid before they get pumped through to the moving components of your transmission, thus avoiding damage. On-time maintenance can extend your transmission's life and keep it operating efficiently. Perform service with ACDelco Gold automatic transmission fluid filters.
( 58 )
$12.99
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$35.99
Summit Bucks
ACDelco transmission solenoids help restore overall performance with the proper fit, form, and function for your vehicle. They feature high-quality materials and strict design requirements that match OE specifications—critical to ensuring an easy installation and dependable drivetrain operation. Choose the replacement transmission solenoids designed for your application so you and your vehicle can go the distance!
( 5 )
$45.99
Summit Bucks
ACDelco transmission fluid dipstick seals fit perfectly around the base to help prevent leaks. Designed to provide OE performance, the seals are offered in several styles for factory fitment on thousands of vehicles. Guard against unwanted leaks; replace dirty, aging, or damaged originals with a new transmission fluid dipstick seal from ACDelco.
( 5 )
$3.99
Summit Bucks
ACDelco offers automatic transmission shift shaft seals for thousands of vehicles from the 1980s and up. These economical steel/rubber replacements are available in different styles for compatibility with over 80 transmission models. Ensure a quality fit and factory-style performance; order the seal recommended for your application.
( 2 )
$5.99
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$6.99
Summit Bucks
ACDelco Gold universal joints help transmit power from the transmission to the rear or front differential through the driveshaft or prop shaft. They allow for vertical movement of the shaft during its rotation. ACDelco Gold universal joints are premium aftermarket replacement components, manufactured to meet or exceed your expectations for fit and performance. Order the model recommended for your vehicle.
( 1 )
$27.99
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$162.99
Summit Bucks
ACDelco offers GM Genuine Parts wheel bearings for a variety of GM applications. These replacements allow the wheel to rotate with minimal friction—and contain tapered roller, straight roller, or ball-bearing elements, depending on the vehicle. Wheel bearings support the weight of the vehicle, and are lubricated with axle oil or wheel bearing grease. Machined from high-quality materials, these original equipment bearings are engineered to provide the same fit, performance, durability, and service life you expect from ACDelco GM Genuine Parts wheel bearings.
( 3 )
$4.99
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$33.99
Summit Bucks
ACDelco automatic transmission oil pan magnets are simple to use—just place them in the transmission oil pan and let them work their magic. The attractors will capture small pieces of metal before they can plug the oil filter or damage the transmission. Quality manufactured to fit your vehicle, ACDelco automatic transmission oil pan magnets will provide the same durability and service life that you expect from a General Motors factory component. Order the model recommended for your application.
( 3 )
$10.99
Summit Bucks
ACDelco GM Genuine Parts transmission vent hose and tubes relieve internal air pressure fluctuations caused by the heating and cooling of the transmission and help to keep out dirt. They are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These true OE parts will provide the same fit and performance as the originals they are replacing.
( 5 )
$6.99
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$7.99
Summit Bucks
ACDelco automatic transmission governor covers are in stock and ready to replace your current cover if it becomes damaged or included in a refurbishing project. These simple steel covers are built identically to the originals for a great fit every time. ACDelco is a global leader in automotive replacement parts, particularly for GM products. Trust the name you recognize--and the reputation behind it--for all of your vehicle equipment needs.
Not Yet Reviewed
$27.99
Summit Bucks
ACDelco GM Genuine Parts automatic transmission clutch booster springs are GM-recommended replacement components for one or more of the following vehicle systems: Automatic transmission/transaxle, and/or manual drivetrain and axles. These original equipment detent levers will provide the same performance, durability, and service life you expect from General Motors.
( 2 )
$15.99
Summit Bucks
Bearings from a name you can trust! When changing your ring and pinion set, don't forget ACDelco carrier bearings. Made of premium materials, these bearings are available for a variety of applications. Order the replacement size recommended for your differential.
Not Yet Reviewed
$40.99
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$78.99
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