Speed Pro Speed Pro Piston Rings 4.375" Bore File Fit 1/16 x 1/16 x 3/16" Thick - Standard Tension H76001FXL The engine must be centered

The engine must be centered between the frame rails

Designed for all drag cars/ door slammers and pro street

With 'Stay-Put' full flex boom

860 in Round Port

Speed Pro Speed Pro Piston Rings 4.375" Bore File Fit 1/16 x 1/16 x 3/16" Thick - Standard Tension H76001FXL The engine must be centeredFace of top rings are coated with the latest generation Plasma Moly Plasma Moly ring face decreases friction and is highly resistant to scuffing Ensures dependable performance and superior service life Application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trustFrom pistons to engine bearing components, Speed Pro offers an array of performance engine parts. You can rely on Speed Pro for industry