4L60 4L60E 4L65E 4L70E Transmission Sonnax Load Release 3-4 Clutch Boost Spring Kit This kit comes with 10 Springs and does not include the retainer; the retainer in the picture is for reference only. This kit will work with 700R4 88-92, 4L60E 93-On, 4L65E 01-On, 4L70E The 77763-01 boost springs offer a low cost, direct replacement alternative to the OE springs. Engineered for the application, the 77763-01 boost springs are precision manufactured from high quality spring materials. Low-cost direct replacement Precision manufactured Made from high quality spring material.