JE Pistons Pro Seal Piston Rings - 4.000" Bore - File Fit - 1.2 x 1.5 x 3.0 mm Thick - Low Tension - Plasma Moly - 8 Cylinder 6000BU Includes FLEX helmet posts that

Includes FLEX helmet posts that mount directly to the M6 nut in your helmet

Ford Mustang 1969-73

GM LT-Series

Ford Mustang 2009-17

Stable Friction Output

JE Pistons Pro Seal Piston Rings - 4.000" Bore - File Fit - 1.2 x 1.5 x 3.0 mm Thick - Low Tension - Plasma Moly - 8 Cylinder 6000BU Includes FLEX helmet posts thatProduct Description: Piston Rings Premium Race Series 4. 000 in Bore File Fit 1. 2 x 1. 5 x 3. 0 mm Thick Low Tension Steel Nitride 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 trust