This is a new set of 2 current production Viton valve stem seals for the Yamaha XT125 '82-'83, BW200 '85-'88, TW200 '87-'06, XT200 '82-'83, TT225 '86-up, TT-R225 '01-'04, XT225 '92-up, TT-R230 '05-up. These are not factory rubber seals that have been sitting around hardening for years. These are made now.....in the 21st century! Viton has a much higher resistance to temperature and chemicals and will maintain their elasticity for many years. Also containing 5% Teflon for reduced friction and wear. These are the best on the planet, satisfaction guaranteed or your money back. Please contact me if you have any questions. Thanks for looking!