Compatible With Royal Enfield Bullet Trials 500 EURO4 2017 – 2019 Royal Enfield Rumbler 500 2010 – 2016 Royal Enfield Thunderbird 500 2010 – 2019 Royal Enfield Thunderbird X 500 2017 – 2019 Specification – Barrel And Piston Kit Assy Brand – Royal Enfiled