The B&M® Transkit™ includes all the same quality components we use in our legendary B&M Street/Strip automatic transmissions, giving you the parts you need to rebuild your 1987-1993 GM 700R4/4L60 transmission, including the following friction materials, forward/direct clutches and steels, intermediate band, seals, gaskets and more. The kit also includes our B&M Transpak™, giving you two choices for re-calibrating your transmission while still retaining full automatic function (1. Heavy Duty, 2. Hi-performance Street/Strip) B&M is a name you can trust, and the brand that's been leading the high performance automatic transmission market since 1953. Note: Does Not fit GM 4L60E (electronic) transmissions.