Sonnax, Superior, Transgo

Sonnax Case Saver Retainer for TH400 & '98-Earlier 4L80-E The Sonnax case saver retainer 34762-10 is the only intermediate clutch retaining rin...

Sonnax Planetary Rebuild Kit for 4L80-E, TH400 Transmissions Optimize the performance of your TH400 or '98-earlier 4L80-E transmission with the Son...

Transgo Reprogramming Kit Lock-Up for TH350C Product Overview:Our THM 350C Performance Valve Body Kit with Gear Command is the ultimate choice for ...

Sonnax Zip Kit for 6T70 and 6T75 Transmissions (2007-2012) The Sonnax Zip Kit 6T70-ZIP is specifically designed to address the root causes of vari...

TransGo Shift Kit for TH700 4L60 (1982-1993) - SK 700 The TransGo 700 SHIFT KIT® Valve Body Repair Kit is specifically designed for 1982 to 1993 G...

Boost Valve Kit for 4L30-E Medium Ratio, OE Code 448 In GM 4L30-E units, the original equipment (OE) boost valves are constructed from steel, while...

The Heavy Duty 1-2-3-4 Piston for 6L80, 6L90 Transmissions From Sonnax Compatibility: Fits 2006–2007 units using OE part number 24224146 Fits 2007...

Line Pressure Booster Kit Sonnax TH700 TH700-R4 TH200-4R Line pressure booster kit 700R4-LB1 fits GM 4L60 (700-R4) and 200-4R transmissions. Sonnax...

Transgo Reprogramming Kit For TH400 This comprehensive kit is designed for heavy-duty and high-performance applications, offering expert valve body...

Sonnax Line Pressure Booster Kit for 4L60-E, 4L65-E, 4L70-E The 4L60E-LB1 Line Pressure Booster Kit is expertly designed to fit early-style GM 4L60...