Total Seal Maxseal Gold Gapless Top Ring File Fit Piston Rings - Bore Size: 4.1035" - Top Ring: 1/16" - 2nd Ring: 1/16" - Oil Ring: 3/16" MT-PRO-SW no matter what the road

no matter what the road brings your way

400 in Round Port

Patriot Exhaust H7021 16 gauge 1 3/4" tube diameter

1965-1966 GMC I1000Fits GM 1965 to 1991 TH400

Total Seal Maxseal Gold Gapless Top Ring File Fit Piston Rings - Bore Size: 4.1035" - Top Ring: 1/16" - 2nd Ring: 1/16" - Oil Ring: 3/16" MT-PRO-SW no matter what the roadEight cylinder sets have AP (Advanced Profiling) steel top rings with extremely tight tolerances for improved combustion sealing. Sets include AP gapless top rings, conventional second rings, and standard tension oil rings. Instructions for file fitting included. Total Seal is known for their piston ring sets. They offer a wide selection of off the shelf options and also offer and the ability to custom order ring sets to meet your specifications.