Material Type: Nodular Cast Iron Bore Size Options: STD (66mm), +25 (66.25mm), +50 (66.50mm), +100 (67mm) Model Compatibility: DR200 42A, SP200, DF200, DR200SE, DR200S, RV200 VanVan External Testing Certification: ISO9001 : OEM Code: 12111-42A02-000, 12111-42A20-0F0 This motorcycle engine piston rings kit is made from nodular cast iron and designed for use with DR200 42A, SP200, DF200, DR200SE, DR200S, and RV200 VanVan models.It offers multiple bore size options ranging from 66mm to 67mm, allowing for precise fitment based on engine requirements.The inclusion of OEM codes compatibility and simplifies installation.The piston rings help maintain combustion chamber sealing, which contributes to reduced oil consumption and improved engine efficiency.Manufactured under ISO9001 certification standards, the kit meets defined quality controls for consistent performance and durability in various riding conditions.