985839 ''Big Oil'' service kit. Full synthetic. Chrome filter

This MCS Big Oil service kit provides everything you need for a comprehensive fluid service on 2018 to 2026 Softail models. Using OEM number 985839 for reference, this kit features 7 liters of Vspec full synthetic 20W50 oil, a versatile 3-in-1 blend suitable for the engine, primary, and transmission. It is fully compatible with mineral and semi-synthetic oils and meets JASO MA/2 specifications. To ensure a leak-free job, the kit includes a chrome oil filter, a primary derby cover gasket, and drain plug O-rings. It is an ideal solution for riders who want the convenience of a single kit to handle a full oil service before a long trip or winter storage.