JE Pistons Premium Race Series Piston Rings - 4.030" Bore File Fit 1.2 x 1.2 x 3.0 mm Thick - Low Tension Cylinder Head Allowing more heat in the

Allowing more heat in the turbine and less damaging underhood radiant heat resulting in a boost in horsepower

86-93 Ford Mustang 5

8 mm Thick

GM Fullsize Truck 1967-73

JE Pistons Premium Race Series Piston Rings - 4.030" Bore File Fit 1.2 x 1.2 x 3.0 mm Thick - Low Tension Cylinder Head Allowing more heat in theProduct Description: Piston Rings Premium Sportsman Series 4. 030 in Bore File Fit 1. 2 x 1. 2 x 3. 0 mm Thick Low Tension Steel Plasma Moly 8 Cylinder JE Pistons is the leader in high performance forged pistons. JE Pistons has built a reputation that the competition can only follow. JE Pistons has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance enthusiasts alike