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O Ring Under Wear Band

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This particular piston features a groove for an O-ring to be installed under the wear band-an exclusive feature you will not find on other shocks. This particular arrangement is reserved for King's high-performance Pure Race shock line. In addition to providing a better seal at the split in the wear band, the O-ring also helps maintain consistent pressure between the wear band and the inner bore of the shock body. This ensures that shock oil cannot leak past the wear band, which optimizes the valving function.