Front fork oil seal set for STORM. The seals keep the oil inside the fork legs and protect against dirt.
Replace them when oil streaks are visible on the fork legs, the fork has lost its travel, or the brake is getting contaminated with oil. When replacing, change both seals and the fork oil. After replacement the suspension works more quietly and softly, and the vehicle holds its line more steadily. When disassembling, also check the axles, bushings and fasteners: worn neighboring parts will quickly ruin the new ones.
