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Ross Racing Spiro Lock Rings 4004-B

Wrist Pin Lock, Steel, Spirolox-Style, .042 in. Thick, .931 in. Outside Diameter, Each

Estimated Ship Date: Monday 2/2/2015 Would you rather pick it up? Select Location

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  • This part is normally shipped directly from the manufacturer / Supplier.

Brand: Ross Pistons

Manufacturer's Part Number: 4004-B

Part Type: Piston Wrist Pin Retainers

Product Line: Ross Racing Spiro Lock Rings

Summit Racing Part Number: ROS-4004-B

Wrist Pin Retainer Type: Spirolox

Wrist Pin Retainer Material: Steel

Wrist Pin Diameter (in): 0.827 in.

Wrist Pin Retainer Thickness (in): 0.042 in.

Wrist Pin Retainer Outside Diameter (in): 0.931 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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