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 Material: Steel, Iron Cylinder Bore: Approx. 40mm / 1.57in OE: 1139?020?1202 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. 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!