Sonnax has introduced a new Smart-Tech clutch kit for optimizing clutch capacity and guarding against clutch burnup in GM 4L60, 4L60-E, 4L65-E and 4L70-E transmissions. This kit (part no. 77734-01K) includes eight .067-in. BorgWarner high-energy frictions and seven .095-in. Lindered steels recommended for use with Sonnax Smart-Tech input housings.