700R4 4L60 4L60E 4L65E TransGo High RPM Clutch Spring Kit 7-CS. FITS: THM 700R4, 4L60E, and 4L65E. FEATURES: 3-4 & Forward Clutch Spring Kit: Prevents Hi RPM centrifugal apply. A must have for hi-Rev use above 5400. With original or additional clutches. Special Instructions: Requires transmission removal for proper installation.