Sonnax Grand National Servo Kit - Search Videos

See what it takes to build a performance converter kit that can handle max power on the street and track! You may have heard of the infamous "Hated" Syclone – an AWD beast running 900 HP and 1,000 ft-lbs of torque. The transmission is already powered up with Sonnax Level 3 4L60/E performance upgrades, and now we help owner Ray Lichtenberg get his converter up to speed as well. Sonnax VP of Product Line Management Steve Jaussaud walks us through the rebuild for an inside look at how everything co

See what it takes to build a performance converter kit that can handle max power on the street and track! You may have heard of the infamous "Hated" Syclone – an AWD beast running 900 HP and 1,000 ft-lbs of torque. The transmission is already powered up with Sonnax Level 3 4L60/E performance upgrades, and now we help owner Ray Lichtenberg get his converter up to speed as well. Sonnax VP of Product Line Management Steve Jaussaud walks us through the rebuild for an inside look at how everything co

3.9K viewsMar 23, 2018

Ramp up performance and reliability with the all-in-one #Sonnax transmission upgrade PROVEN to easily handle even the most extreme horsepower and torque. The revolutionary Smart-Tech® direct clutch drum and shaft kit eliminates every critical weakness of the OE drum and intermediate stub shaft. Now available in two ratios to fit all Ford AODE, 4R70E/W and 4R75E/W transmissions, this kit is packed with all the parts you need for hassle-free rebuilds. Learn more here - - >> https://www.sonnax.com/

Ramp up performance and reliability with the all-in-one #Sonnax transmission upgrade PROVEN to easily handle even the most extreme horsepower and torque. The revolutionary Smart-Tech® direct clutch drum and shaft kit eliminates every critical weakness of the OE drum and intermediate stub shaft. Now available in two ratios to fit all Ford AODE, 4R70E/W and 4R75E/W transmissions, this kit is packed with all the parts you need for hassle-free rebuilds. Learn more here - - >> https://www.sonnax.com/

75.3K viewsMay 20, 2020

Super Hold Servo Kit - 28821-09K

Super Hold Servo Kit - 28821-09K

Supported Servo Master Kit - 28821-20K

Supported Servo Master Kit - 28821-20K

Sonnax 34914-20K: 34914-20K Externally Adjustable Low/Reverse Servo Kit for GM TH400 Automatic Transmission - JEGS

Sonnax 34914-20K: 34914-20K Externally Adjustable Low/Reverse Servo Kit for GM TH400 Automatic Transmission - JEGS

Sonnax K13259C-1: "C" Ratio Servo Kit C4, C5 - JEGS

Sonnax K13259C-1: "C" Ratio Servo Kit C4, C5 - JEGS

Sonnax 34914-28K: 34914-28K Externally Adjustable Low/Reverse Servo Kit for GM 4L85-E, 4L80-E Automatic Transmissions - JEGS

Sonnax 34914-28K: 34914-28K Externally Adjustable Low/Reverse Servo Kit for GM 4L85-E, 4L80-E Automatic Transmissions - JEGS

Stop worrying about input shaft failure when running the Powerglide in the most extreme applications. You can now take full advantage of this lightweight and efficient transmission with the trusted #Sonnax big shaft system — the best way to connect huge power to Sonnax extreme planetaries for run after run with minimum downtime. Delivering 35% more strength than standard 1" shafts, this track-proven upgrade is now available for ALL Sonnax gear set ratios. Watch this video to see how easy it is t

47.6K viewsJan 20, 2020

For customers with demanding GM 6L80/90 gas-powered applications that use a full-size torque converter, #Sonnax introduces this easy-to-build, cost-effective performance converter kit. Employing a forged cover, forged piston and three woven carbon friction elements, builders now have a dampered 300mm multi-plate option that delivers significantly increased clutch capacity and durability. By re-using the OE damper with the Sonnax clutch plates (bonded with OE woven carbon friction material), this

32.6K viewsAug 27, 2020

1.69 Ratio Extreme Planetary Assembly Kit - 28169G-NS

1.65 Ratio Extreme Planetary Assembly Kit - 28165G-NS

GM TH400 racing applications quickly push the heavy, cast-iron OE forward drum over its limits. To dramatically reduce weight and deliver the ultimate in reliability and transmission performance, #Sonnax introduces this new heavy duty forward drum — a high-strength, chromoly steel upgrade just 3 oz heavier than a common aluminum drum. 💪💪 Watch this video to get a full breakdown of all the race-ready features, plus the heavy and extreme duty input shaft options for a complete Sonnax build. Clic

95K viewsJan 17, 2022

Get a behind-the-scenes look at one of our Powerglide extreme duty ring gears on the gear shaper machine in the #Sonnax shop! From here, the part will be functionally tested by meshing with a full set of gears, along with a detailed dimensional inspection. These ring gears come pre-drilled to accept the patented Sonnax ring gear stabilizer kit. Are you running a Powerglide? Level up your build with top-quality #sonnaxperformance parts here - ->> https://www.sonnax.com/units/488-powerglide | Sonn

4.9K viewsJun 24, 2020

1.58 Ratio Extreme Planetary Assembly Kit - 28158G-06

It’s easy to upgrade GM 4L80-E and 4L85-E work/sport vehicles for maximum performance and durability with this new comprehensive kit from #Sonnax. Innovative components work together to precisely recalibrate pressures and shift accumulation, delivering firmer shifts under load without sacrificing low-speed drivability. Plus, target common wear areas in the transmission with many top-quality parts to repair damage, prevent future wear and improve reliability. Watch this video to get the full brea

42.7K viewsOct 4, 2021

4L60E/4L60/4L65E/4L70E 4th Gear Dual Servo Kit 1982-up Super Hold Performance Compatible with SONNAX 77767K Specs

4L60E Rebuild Part 4 - Installing the Sonnax Performance Pack and Super Hold Servos

45.9K viewsAug 10, 2019

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Overcome the GM 10-speed wheel lockup recall and get vehicles back on the road FAST with this new drop-in kit from #Sonnax! 🔧 ✅ 🙌 In this video, you’ll discover the root cause of the recall, symptoms to watch out for, and the quick, easy way to tackle the issue with no worries about comebacks. Watch now! 🎥👍 | Sonnax

107.7K views10 months ago

When racing a TH400, it’s critical to upgrade the forward and direct drums. The key is not only stronger, more durable parts, but improving efficiency for better performance, consistency and safety. Grab a radical edge over the competition with the game-changing #Sonnax Smart-Tech drum module! It’s the first and only TH400 upgrade to optimize drum function with a unique configuration of both lighter and stronger components. The result: a big boost in transmission efficiency for more power to the

134.1K viewsOct 27, 2022

Working on RFE transmissions? Check out the brand-new HD inner retainer housing kits from #Sonnax. They're front and center at The SEMA Show this year! 🔥😍 Get hands-on with these and tons of other parts at booth #22829. See kit details and where to buy here: 🔗https://bit.ly/4hYlWrV | Sonnax

24.5K views6 months ago

Get faster, easier 6L80 series rebuilds with #Sonnax! 🔧 ✅ 🙌 Thanks to an improved valve design, our popular drop-in and oversized pressure regulator valve kits no longer require pump drilling to restore line pressure control. Watch this video to learn everything you need to know about this exciting update! 👍 | Sonnax

84.2K viewsMar 19, 2025

Watch this video to learn about the great range of Sonnax 6L80/90 transmission parts for stock, heavy-duty and extreme vehicles on display at The SEMA Show! From shafts to clutch components, a Zip Kit and line pressure booster kit for great valve body/pump performance, plus the must-have lube dam for keeping things clean, Sonnax offers these and many more components for top-quality rebuilds. 🙌 Today is the last day of SEMA 2022, so if you’re here be sure to visit the Sonnax team at booth #20249

1.1K viewsNov 4, 2022

Repair & Prevent Chrysler 62TE Manual Shaft Failure | Sonnax

Dodge trucks with Chrysler RFE transmissions are at high risk for overdrive failure due to clutch wear on the inner retainer housing. Easily improve transmission durability and eliminate all risk of wear with this new heavy duty inner retainer housing kit from #Sonnax. 🙌 🎥 Watch this video to learn: ✅ Why OE retainer damage happens ✅ How this exciting upgrade works to eliminate wear in ’07-later 45/545RFE and all 65/66/68RFE transmissions ✅ How easy it is to install ✅ How to choose the right k

149.8K views7 months ago

2nd Gear Super Hold Servo Kit - 77911-03K

Get a behind-the-scenes look at the #Sonnax 48RE big shaft stator assembly process in this cool video featuring machine operator Joe O’Donnell! For drivers pushing the limits beyond 1,000HP, the Smart-Tech big input shaft kit delivers the ULTIMATE protection against spline twist and shaft breakage in Chrysler 47RH, 47RE and 48RE transmissions. Click here to learn more - ->> https://www.sonnax.com/chrysler-48re-big-shaft | Sonnax

5.6K viewsJun 1, 2020

Get all the parts you need to tackle multiple complaints in Ford 10R60/80/90 and GM Gen. 1 10L60/80/90 transmissions with this new Zip Kit from #Sonnax. 👍 Drop-in Zip Valve™ parts install quickly and easily – no reaming or special tools required. 🙌 Plus, you'll get a detailed tech booklet with additional rebuild and inspection tips for comprehensive valve body repair. 👌 Watch this quick video to get the full scoop! 🎥 And learn more here 👉🔗 https://www.sonnax.com/parts/5834-zip-kit | Sonnax

96.9K views11 months ago

Critical Tips for Success with the 68RFE Sonnax Smart-Tech Overdrive Clutch Housing Kit

Checking the rear band adjustment on drag racing GM TH400 and 4L80-E vehicles is critical for keeping the transbrake ready for proper launch, but it's never been easy to do with OE and most aftermarket-style low/reverse servos. Featuring a unique design, these two new externally adjustable low/reverse servo kits from #Sonnax make it quick and easy for anyone to control band maintenance for improved reliability and consistent, predictable staging. 🙌 Watch this video to learn everything you need

116.1K views11 months ago

It’s no secret that the #Sonnax Smart-Tech overrun clutch valve kit is the best way to outsmart overdrive roller clutch failure in hardworking 4L80/85-E transmissions. This kit easily fits ’97-later units…however, with a minor lube tube modification, it can also be installed in ’92-’96 units. Watch this video to see exactly how it’s done! Click here to learn more about this kit: https://www.sonnax.com/parts/4496 | Sonnax

2.1K viewsOct 1, 2020

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