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Wrist Pin Retainer, SpiroLox, for .975 in. Pin Diameter, .042 in. Width, Each
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Estimated Ship Date from OH, NV, TX: Monday 10/26/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
4004-E
Part Type:
Product Line:
Summit Racing Part Number:
ROS-4004-E
Wrist Pin Retainer Type:
Spirolox
Wrist Pin Retainer Material:
Steel
Wrist Pin Diameter (in.):
0.975 in.
Wrist Pin Retainer Thickness (in.):
0.042 in.
Wrist Pin Retainer Outside Diameter (in.):
1.080 in.
Quantity:
Sold individually.
Ross Racing Spiro Lock Rings
Ross Racing Spiro lock rings are designed for floating-pin pistons. Engines produced with press-fit pins can be converted to the "floating" type, providing that the piston has provisions for a lock ring retainer. Floating pins are preferred by most serious engine builders.
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Some parts are not legal for use in California or other states with similar laws / regulations
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