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Ross Pistons 4004-E - Ross Racing Spiro Lock Rings

Ross Pistons 4004-E - Ross Racing Spiro Lock Rings large image

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  • Wrist Pin Retainer, SpiroLox, for .975 in. Pin Diameter, .042 in. Width, Each
  • Application Specific
  • Estimated Ship Date: 5/29/2012
 
BrandRoss Pistons
Manufacturer's Part Number4004-E
Part TypePiston Wrist Pin Retainers
Product LineRoss Racing Spiro Lock Rings
Summit Racing Part NumberROS-4004-E
 
Wrist Pin Retainer TypeSpirolox
Wrist Pin Retainer MaterialSteel
Wrist Pin Diameter (in)0.975 in.
Wrist Pin Retainer Thickness (in)0.042 in.
Wrist Pin Retainer Outside Diameter (in)1.080 in.
QuantitySold individually.
 

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.

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