Motorcycle Accessories Cylinder Block Bore 76.8mm For CRF250R 2010-2017 Engine 12100-KRN-A40 Off-road Pit Dirt Bikes Parts Material: Aluminum and ceramics OEM number: 12100-KRN-A40, 12100-KRN-A60 Cylinder bore diameter: 76.8mm Dimensions: 85 x 82 x 76.8 x 52 x 35mm Weight: 762g Quantity: 1 piece This cylinder block is designed for use with CRF250R models from 2010 to 2017.Constructed from a combination of aluminum and ceramics, the cylinder features enhanced wear resistance due to the integration of ceramic materials on the inner wall.This contributes to improved durability and consistent performance in demanding off-road and pit bike conditions.The bore diameter of 76.8mm aligns with OEM specifications, allowing for precise fitment and engine.The component is engineered for direct replacement or upgrade applications.Its design supports straightforward installation without the need for modifications, suitable for both experienced mechanics and riders performing their own maintenance.The lightweight construction helps maintain overall engine balance while supporting performance needs.With a focus on longevity and resilience, this cylinder block is suited for off-road riding environments.The silver finish complements the appearance of the motorcycle while supporting functional requirements.Designed specifically for off-road and pit dirt bikes, it serves as a functional upgrade for riders seeking improved engine.