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Ross Racing Piston Oil Ring Spacers

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Ross Racing piston oil ring spacers are used in applications where the piston oil ring groove intersects the pinhole. They can be used only in pistons that have the oil ring groove machined 0.030 in. wider than the oil ring. They are manufactured from spring steel and install against the bottom sill of the oil ring groove. Available in different bore diameters to suit your specific engine's needs, Ross Racing piston oil ring spacers will keep your pistons working smoothly throughout the entire operating range.

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Oil Ring Support Rail, 4.000-4.060 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-400

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Oil Ring Support Rail, 4.061-4.125 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-406

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Oil Ring Support Rail, 4.126-4.187 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-412

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Oil Ring Support Rail, 4.470-4.530 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-447

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Oil Ring Support Rail, 4.591-4.625 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-456

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

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