TS1 ring sets have been the standard in the racing industry for years. These sets feature a ductile moly top ring, the patented Gapless second ring, and a low tension oil ring. TS1 sets are for use in all applications including mild nitrous or mild boost.
Sold in .005 over size and must be file fitted to bore. For 4.000" bore or 4.125" bore Chevy small blocks.
Ring Style Chart