Before installing new pistons and rings in an engine or replacing brake slave and master cylinder seals, the bores should be honed. Honing removes the glaze from the cylinder wall allowing the rings to bed in, and aiding oil retention on the cylinder wall. Comes with 4 long medium cut stones.
4 Engine Cylinder Hone sizes: 50-170mm, 40-80mm, 19-60mm and 19-55mm.
Replacement Stones are also available.
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