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Ross Racing Spiro Lock Rings 4004-D

Wrist Pin Lock, Steel, Spirolox-Style, .042 in. Thick, 1.013 in. Outside Diameter, Each

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Brand: Ross Pistons
Manufacturer's Part Number: 4004-D
Summit Racing Part Number: ROS-4004-D

Wrist Pin Retainer Type: Spirolox
Wrist Pin Retainer Material: Steel
Wrist Pin Diameter (in): 0.890 in.
Wrist Pin Retainer Thickness (in): 0.042 in.
Wrist Pin Retainer Outside Diameter (in): 1.013 in.
Quantity: Sold individually.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

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.


Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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