Availability
Summit Bucks
Sonnax premium planetary assemblies are available in various configurations to meet different build requirements. The output shaft is available in the OEM length or short length, and the billet-machined drum flange in 12-tooth or 24-tooth. They are a big step up from standard case-hardened and tempered gears. Sonnax's top-quality racing gear material (SAE9310), combined with a freeze-tempering process (-150 degrees F), results in gears with improved grain structure and stability--tougher and more resistant to wear. Sonnax premium planetary sets are fully assembled and ready to install.
Not Yet Reviewed
$999.99
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$1,205.99
Summit Bucks
Sonnax input carrier kits transform OE wide-ratio automatic transmissions into a close ratio for game-changing acceleration on the track. Manufactured and engineered for outstanding durability, these kits keep your engine in the optimal power band, while allowing a longer pull in first and second gears, improving consistency and performance. The input carrier gears are precision-ground to OE standards and feature thrust washers with a highly wear-resistant, PTFE-coated material, plus a thicker captured bearing. Lube channels direct oil to the pinion pins, and the carrier can be disassembled for inspection and service. Stay in the power band with Sonnax input carrier kits.
( 3 )
$855.99
Summit Bucks
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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$1,113.02
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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$770.64
Summit Bucks
ACDelco driveshafts are designed to replace your factory originals with no modifications. They're manufactured from quality materials and have the stock connections for an easy bolt-in fit. These driveshafts are available in various lengths, diameters, and materials for many auto, truck, and SUV applications.
( 6 )
$772.99
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$1,001.99
Summit Bucks
Sonnax Smart-Tech input housing kits address the weak areas of 4-speed automatic transmissions. Flexing and bowing of OEM and other aftermarket backing plates is eliminated with Sonnax's heavy-duty bolt-on anchoring plates. Their unique design ensures even clamping of the 3-4 clutches in higher horsepower, higher pressure applications. By eliminating the 3-4 snap ring and using a thinner, yet stiffer apply plate, space is made available for additional frictions and steels. This makes it possible to simultaneously increase clutch torque capacity and eliminate the possibility of retaining ring blow-out. A steel reinforcement sleeve prevents breakage in the spline area. Housing fatigue/failure-resistance and housing life are significantly improved with a special treatment process that greatly reduces stress crack formation.
( 4 )
$879.88
Summit Bucks
Main shaft failure is a common problem in extreme duty GM TH400, 4L80-E and 4L85-E units. OE and aftermarket shafts simply don't hold up in extreme horsepower applications, leading to spline twist and shaft breakage. Sonnax replacement extreme duty main shafts are manufactured from an exceptionally tough high-strength Aermet steel alloy with proprietary heat treatment for unrivaled performance and durability. An advanced torsional design with spline and cross-hole refinements make these the most durable 1 in. main shafts available. These shafts withstood extensive track and lab testing with unbroken results in the most extreme applications. Additional details: * Recommended for applications above 1,000 hp * Top-notch engineering and precision manufacturing deliver unrivaled performance and durability in the 1 in. stock size * Rear spline prevents the rear internal gear journal-end from twisting off by engaging the full internal spline of the gear * Extensive in-vehicle and lab testing with unbroken performance
Not Yet Reviewed
$978.48
Summit Bucks
Sonnax heavy-duty automatic transmission output shafts allow energy to be absorbed via their torsional design, reducing peak power loads to critical areas. This, in turn, prevents shaft failure common in certain GM units. These steel output shafts are precision engineered and manufactured for unbeatable performance in high-horsepower street and strip builds. They're available in various lengths, and feature many unique refinements available only from Sonnax.
( 2 )
$774.01
Summit Bucks
Sonnax offers a variety of extreme duty strength output shafts in different spline counts, as well as long and short lengths. All shafts can be purchased separately, with some shafts also available as part of complete extreme planetary assembly kits. These shafts are bolt-on for easy service and designed for use with different gear sets, depending on the application. Order the Sonnax extreme strength output shafts best suited for your application.
Not Yet Reviewed
$754.67
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$847.41
Summit Bucks
These TCI Ultimate Master racing overhaul kits have been engineered to handle that increase in horsepower you crave. They include additional clutches with an exclusive lining, bands with heat-treated struts, gaskets, seals, and various upgrade components to prepare your transmission for big horsepower gains. These TCI Ultimate Master racing overhaul kits are must-haves if you want to have serious horsepower.
( 1 )
$976.95
Summit Bucks
Sonnax heavy-duty intermediate shafts are a direct replacement upgrade for Chrysler 47RE, 47RH and 48RE transmissions. OE shaft failure is common as power levels are increased and in long-distance towing applications. These Sonnax shafts are specially heat-treated and processed for maximum strength and resistance to fracture, making them the ideal upgrade for most high-horsepower street, competition or towing applications. The shafts feature many unique refinements available only from Sonnax, including a torsional design that allows energy to be absorbed, reducing peak loads to critical areas. Additional details: * Patented modifications to lubrication channel increase lube flow to prevent geartrain meltdown * Torsional design dissipates peak stress * Rolled splines for increased durability * Manufactured from 300M ultra high-strength steel for maximum strength and resistance to fracture
Not Yet Reviewed
$762.68
Summit Bucks
Based on an ultra-durable, one-piece forging, Sonnax Smart-Tech input shaft and piston kits have a hub with longer front clutch splines. Combining longer splines with a thinner billet aluminum direct piston allows for one extra OE thickness direct friction plate, while keeping original thickness steels, backing plate, original retaining ring and OE clutch clearances.
( 1 )
$1,103.00
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
$984.25
Summit Bucks
ACDelco GM Genuine Parts automatic transmission valve bodies are GM-recommended replacements for your vehicle's original components. These valve bodies act as a hydraulic brain, directing hydraulic fluid to different channels within the valve body in order to perform your vehicle's gear changes. The original equipment valve bodies are manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
( 1 )
$783.99
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$968.99
Summit Bucks
ACDelco new torque converters are GM OE replacements that offer the same performance, durability, and service life you've come to expect. With quality steel housings and internal components, ACDelco torque converters are sure to deliver the performance and fit needed for your vehicle.
( 1 )
$765.99
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$996.99
Summit Bucks
ACDelco GM Genuine Parts CV axle shafts transfer torque from your vehicle's transmission or differential to its wheels, and are GM-recommended replacements for your vehicle's original components. These shafts have constant velocity (CV) universal joints at each end to allow your wheels and suspension to articulate. The axle shafts have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. Order the model recommended for your specific application.
( 12 )
$875.99
Summit Bucks
ACDelco remanufactured torque converters provide the best possible solutions for your needs, and your budget. Existing units are disassembled, components most prone to wear, as well as damaged or obsolete parts are replaced with new, and all are end-of-line tested to ensure performance in your GM vehicle.
Not Yet Reviewed
$775.99
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$826.99
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
ACDelco GM Genuine Parts offers transmission clutch kits for a variety of muscle and sports cars, such as Corvettes and Camaros. These OE replacements include clutch disc and pressure plate designed for your specific vehicle. The parts are engineered and tested to rigorous General Motors standards. Order the kit recommended for your application.
Not Yet Reviewed
$857.99
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$1,031.99
Summit Bucks
ACDelco GM Genuine Parts clutch flywheels are designed, engineered, and tested to rigorous standards and backed by General Motors. They're true OE parts that will replace your originals with the same fit and performance, and are updated to integrate new materials and technologies. Order the flywheel recommended for your Chevrolet, Buick, GMC, or Cadillac vehicle.
Not Yet Reviewed
$779.99
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$879.99
Summit Bucks
ACDelco GM Genuine Parts wheel bearing and hub assemblies support the vehicle while allowing the wheel to rotate. They are a GM recommended replacement for your vehicle's original component. These GM Genuine Parts wheel bearing and hub assemblies have been manufactured to provide you with the performance, durability, and service life you expect from General Motors.
( 13 )
$877.99
Summit Bucks
When it comes time to update your worn-out or failed 4WD differential actuator, look no further than ACDelco. These replacement front axle actuators are available in the original vacuum or electric-style, just like OEM. Trust ACDelco for the trouble-free engagement of your 4WD system.
( 1 )
$789.99
Summit Bucks
ACDelco GM Genuine Parts transfer case replacement parts are manufactured to be exact replacements for your vehicle. They include a complete range of components from bearings, bushings, snap rings, cases, housing extensions, switches, and vents. These replacement parts are manufactured using the latest technology to deliver the reliability and durability you expect from ACDelco. They are GM Genuine Parts replacements, meaning you can rest assured of premium quality, as well as peace of mind that the fit, form, and function meet their high standards and yours.
( 2 )
$751.99
Summit Bucks
ACDelco GM Genuine Parts differential drive pinion gear yokes are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These are the true OE parts installed during the production of or validated by General Motors for GM vehicles, so you are confident they will fit perfectly and perform optimally in your Chevrolet, Buick, GMC, or Cadillac vehicle. Order the yoke designed for your vehicle.
( 1 )
$831.99
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