PISTON RINGS (8),NON-FILE BACK,4"+.030",1/16 X 1/16 X 1/8"

Brand New ProComp Set of 8 Non-File Back Moly High Performance Piston Rings, 4.030" Bore, Standard (Part #4528).

These piston rings are designed to stand up to the rigors of racing and high performance street use while providing long lasting life. Non-file back moly piston rings fit matching bore sizes without requiring custom filing to achieve proper end gap.

Features:

• Plasma-coated, barrel-shaped, ductile iron top rings that seal against blow-by when the piston rocks in its bore.
  
• Tapered secondary rings that seal against the oil control rings upper surface for excellent oil control.
  
• 3-piece oil rings with stainless steel expanders that provide accurate tension without the loss of any horsepower.
  
• Sold in sets of 8.

Specs:

• Piston Bore Size: 4.030"
• Top Piston Ring Facing Material: Plasma Moly
• Top Piston Ring Material: Cast Iron
• Top Piston Ring Thickness: 1/16"
• Middle Piston Ring Material: Cast Iron
• Middle Piston Ring Thickness: 1/16"
• Oil Piston Ring Material: Stainless Steel
• Oil Piston Ring Thickness: 1/8"
• Quantity: Set of 8