ProX Crank Seal Set YZ250 76-87 + YZ465/490 ProX offer a wide range of crankshaft oil seals for the MX, ATV and PWC segment. The major part of the crankshaft oil seals are manufactured by the OEM factories in Japan. Premium base materials are made to OEM specs and tolerances for steady and guaranteed quality and superior durability! The ProX crankshaft oilseals are assembled in sets to be the easy and cost efficient OEM replacement for each application in the MX, ATV or PWC segment. ProX Crankshaft Oilseal features Wide range of seals manufactured by the OEM factories in Japan! Designed to OEM specifications and tolerances for guaranteed quality and superior durability! Assembled in sets to be a simple and cost efficient OEM replacement! Full range of crankshaft oilseals for MX, ATV and PWC available from stock!