A complete overhaul kit manufactured of the best parts available with everything you need. This kit includes all synchros, seals, roller bearings, gaskets, a small parts kit, snap rings, bushings, needle bearings, springs, thrust washers, etc. Upgraded Jerico style super rolling main case bearings are standard in these kits for those who want to go racing. Fits large and small spline transmissions. For street or track, this is the best kit on the market!