This Schumacher Racing Products factory replacement rebuild kit contains the hardware needed to service and restore a gear differential on compatible Schumacher K1, Aero KF, KF2, K2, L1 Evo, and FT platform vehicles. The kit includes metal pins, O-rings, flat washers, and countersunk screws, giving you the key wear components in a single package. Keeping a rebuild kit on hand means less downtime when routine differential maintenance is due. Features: Includes pins, O-rings, washers, and countersunk screws Covers multiple Schumacher platforms in one kit Metal hardware throughout Factory replacement diff service components 7/7/26 cs