Speed Pro Hellfire Piston Rings 4.125" Bore File Fit 1/16 x 1/16 x 3/16" Thick - Standard Tension RG20001XL with 5/8"-18RH threads located on

with 5/8"-18RH threads located on the inside/ center link end and 5/8"-18LH threads on the outer/spindle end

Great for racing

Pressure Regulator

This is the medium size version with a 20 degree angle

Finish: Matte White

Speed Pro Hellfire Piston Rings 4.125" Bore File Fit 1/16 x 1/16 x 3/16" Thick - Standard Tension RG20001XL with 5/8"-18RH threads located onTop ring is an uncoated special hardened and tempered high strength material that withstands high heat a pressure without collapsing. Standard tension oil ring to provide maximum oil control 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