Manufacturer's Part Number:
Piston Wrist Pin Retainers
Ross Racing Spiro Lock Rings
Summit Racing Part Number:
Wrist Pin Retainer Type:
Wrist Pin Retainer Material:
Wrist Pin Diameter (in):
Wrist Pin Retainer Thickness (in):
Wrist Pin Retainer Outside Diameter (in):
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These Ross Racing piston 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.