This is a new set of 2 current production Viton valve stem seals for the Honda XL185S and XR185 all years. These are not factory rubber seals that have been sitting around hardening for 30 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!