PISTON RINGS (8),ZERO GAP MOLY,4"+.030",1.5 X 1.5 X 3MM

Brand New ProComp Set of 8 Zero Gap Moly High Performance Piston Rings, 4.030" Bore, Metric (Part #4638).

These piston rings are designed to stand up to the rigors of racing and high performance street use while providing long lasting life.

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: 1.5mm
• Middle Piston Ring Material: Cast Iron
• Middle Piston Ring Thickness: 1.5mm
• Oil Piston Ring Material: Stainless Steel
• Oil Piston Ring Thickness: 3 mm
• Quantity: Set of 8