This Piston&Ring Set STD NOS. Can fit Suzuki model below. DS250T 1980 250 DS250 DUAL PURPOSE. TS250B 1977 246 TS250 SAVAGE DUAL SPORT. TS250C 1978 246 TS250 SAVAGE DUAL SPORT. TS250N 1979 246 TS250 SAVAGE DUAL SPORT. TS250T 1980 246 TS250 SAVAGE DUAL SPORT. TS250X 1981 246 TS250 SAVAGE DUAL SPORT. That’s new old stock Suzuki Genuine parts Made in Japan P/N. My item’re in very good condition new & never use before. Good use Good quality from Japan. If you have Suzuki model I had listed please keep it in your collection to use when you need to repair your lover bike because hard to find now. Piston diameter is 70mm. Some dirty on it because take from bad stock dealer inventory.