Features: 1.Part Number: The chainsaw piston and cylinder kit replacement OE number is 1139?020?1202 for reference, please double check the part number of your item before purchasing. 2.Applicable Model: The superior piston and cylinder kit is especially designed for STIHL MS211 chainsaw with high accuracy and perfect fitness to meet your demands. 3.Excellent Advantages: Low noise, low expansion coefficient, improved heat dissipation, strong power and low fuel consumption, lower friction surface as well as long service life. 4.Durable Materials: Piston and cylinder kit is made from steel and iron with high strength and high hardness, not easy to break, anti aging, rust and wear resistant, durable. 5.Direct Installation: The chainsaw piston cylinder kit is precisely engineered and produced on the base of standards, allowing you to directly replace original damage one. Specification: Item Type: Chainsaw Piston Cylinder Kit_x000D_ Material: Steel, Iron_x000D_ Cylinder Bore: Approx. 40mm / 1.57in_x000D_ OE: 1139?020?1202_x000D_ Fitment: For STIHL MS211 Chainsaw PackageList: 1 x Piston Pin 2 x Piston Ring 2 x Piston Retaining Ring 1 x Cylinder 1 x Piston Note: 1. Please double check the part number of your item, matching information is for reference only._x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!